The statement 'Natural selection can affect gene frequencies by introducing new alleles to a population' is False about this process.
What is Natural selection?Natural selection is an evolutionary process associated with differential survival and reproduction of the more adapted organism, which depends on alleles and genotypes that carry such individuals.
In conclusion, the statement 'Natural selection can affect gene frequencies by introducing new alleles to a population' is False about this process.
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Which part of a cell synthesises proteins?
Answer:
Ribosomes are the sites in the cellsell in which protein synthesis takes place.
dysregulated crtc1 activity is a novel component of pge2 signaling that contributes to colon cancer growth
The correct answer is CRTC1 its significance of its dysregulation in colon cancer because of its predominant expression in the brain .
CRTC1 transcriptional activity is mediated by EP1 and EP2 receptor signalling, as well as subsequent calcineurin and protein kinase A activation. In colon cancer cell lines, in vitro CRTC1 loss of function was associated with decreased viability and cell division rate, as well as increased chemotherapy-induced apoptosis in response to PGE2. CRTC1 stable overexpression, on the other hand, significantly increased colonic xenograft tumour growth, demonstrating the role of CRTC1 signalling in colon cancer progression. The discovery of the transcriptional programme activated by increased CRTC1 expression during colonic carcinogenesis revealed several notable pro-tumorigenic CRTC1 target genes, including NR4A2, COX2, amphiregulin (AREG), and IL-6. Finally, we show that CRTC1-induced COX2, AREG, and IL-6 promoter activities are dependent on functional AP1 and CREB transcriptional partners.
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Many soil-dwelling bacteria produce molecules that can be naturally synthesized and kill other species of bacteria. What are these bacteria-killing molecules called?.
These molecules that kill bacteria are known as anti-biotics.
Antibiotic literally translates to "against bacteria". It is a specific class of antimicrobial agent that works to kill bacteria. The use of antibiotic drugs is common in the treatment and prevention of bacterial infections since they are the most effective type of antibacterial agent. Bacterial growth may be prevented or killed by them.They either destroy the germs or make it difficult for them to proliferate and flourish.There are several ways to take antibiotics:Orally (by mouth): These could be tablets, capsules, or liquids.Topically: You might apply this to your skin as a cream, spray, or ointment. Additionally, it can be ear drops, eye drops, or eye ointment. Intravenously: an injection.So, the answer is antibiotics.
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Does the formation of sperm is more in low temperature???
Answer:
Sperm production is a process that's sensitive to heat. Ideally, sperm production occurs around 93.2ºF, which is about 5ºF below normal body temperature. This is why the testes hang below the body to keep the temperature a bit lower.
Explanation:
Redwood trees are among the tallest trees in the world, reaching more than 110 meters in height. Which property of water causes it to be transported up to the top of a redwood tree?.
Although Redwood trees are very tall, reaching 110 meters in height, water can still get to the top of the Redwood tree because of the following properties of water: cohesion and adhesion.
The water molecule is polar. This is because a water molecule has a partial positive charge on one side and a partial negative charge on another side. Thus, the partial negative side of one water molecule gets attracted to the partial positive side of another water molecule. This attraction is called hydrogen bond.
The hydrogen bond in water is responsible for most of the properties of water, including cohesion and adhesion. The polar water molecule is not only attracted to other water molecules, but it's also attracted to the molecules of other substances that are polar. The process whereby water molecules stick to one another is called cohesion, and the process whereby water molecules stick to other substances is called adhesion.
Redwood trees transport water using vessels called xylem. The walls of the xylem vessels are polar; hence, adhesion occurs on the walls of the vessel, while cohesion occurs between the water molecules in the xylem. This enables water to climb up the xylem vessels in the Redwood tree from the root all the way to the leaves. This process is also called capillary action.
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Answer:
B (cohesive behavior)
Explanation:
9. Write the chemical equation for the process of photosynthesis.
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
bam
38. Based on their characteristics, soils are classified into orders. Give the order for each of the different types of soils:
new soils that have recently formed, often by flooding
older, heavily weathered soils
prairie soils
woodland soils
Soil Taxonomy classifies soils at the most fundamental level into one of 12 groups known as "orders."
New soils that have recently formed, often by flooding - Entisols Older, heavily weathered soils - Ultisols Prairie soils - Mollisols Woodland soils - AlfisolsThese orders of soil in Soil Taxonomy each represent a collection of soils with unique traits and ecological importance. The soil classification/Soil Taxonomy system has multiple degrees of information, from the most basic to the most intricate, just as the classification systems for plants and animals.
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You’ve now seen that earth’s varying distance cannot be the cause of our seasons. So what is the cause of the seasons?.
Axis of the earth is inclined to its orbital plane. This is the axis around which it spins. This triggers the change of the seasons.
When the earth faces the sun, it is summer in the parts facing the sun. When the axis of the globe is facing away, winter is to be expected. Due to the axis' 23 1/2-degree tilt, the North Pole never points exactly at the Sun, but rather as close as it can during the summer solstice and as far away during the winter solstice. In the midpoint between these two phases, spring, the earth's rotational axis is 90 degrees away from the sun. This shows that there are 12 hours in each day and night on this particular date.Why does our weather matter because of the tilt of the Earth's axis?
Each square centimeter of the earth receives more light (and heat) while the sun is overhead since it is dropping directly on you. Less heat can be absorbed (per square centimeter) when the sun is lower in the sky because the light is more evenly distributed over the earth's surface. The sun is higher when you are on the portion of the earth where the axis points more towards the sun and lower when you are on the part of the earth where the axis points away from the sun because of the tilt of the earth's axis.Hence the answer is inclination of earth's axis.
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henke vg, bateman bt, leffert lr. focused review: spinal anesthesia in severe pre-eclampsia. anesth analg. 2013 sep;117(3):686-93.
A form of neuraxial anesthesia known as spinal anesthesia involves injecting local anesthetic (LA) into the cerebrospinal fluid (CSF) of the lumbar spine in order to numb the nerves that leave the spinal cord.
What does the study indicate?As long as there is no indwelling epidural catheter or neuraxial anesthesia contraindication, spinal anesthesia is generally regarded as a reasonable anesthetic choice for cesarean delivery in severe preeclampsia. Those with severe preeclampsia experience spinal-induced hypotension less frequently and with less severity than healthy parturients. Although spinal anesthetic may result in more hypotension than epidural anesthesia in cases of severe preeclampsia, this hypotension is often manageable, transient, and unrelated to clinically meaningful differences in outcomes.Learn more about the Pre-eclampsia with the help of the given link:
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cardiovascular, cerebrovascular, and renal co-morbidities in covid-19 patients: a systematic-review and meta-analysis
By meta-analysis, it was found that cardiovascular, renal, cerebrovascular, and comorbidities in COVID-19 patients increase their severity and age may not play any role in this.
More than thirty-five million people have been infected by COViD-19. Diseases such as kidney diseases, cardiovascular diseases, and hypertension were seen as COVID-19 increasing factors. Various studies have been conducted to know whether age is a related factor to increased mortality and the relation between COVID-19 and co-morbidities.
The reports of different COVID-19 patients with different co-morbidities were collected and carefully analyzed. It was observed that most of the deceased patients were suffering from hypertension, followed by cardiovascular diseases and cerebrospinal diseases. It was concluded that only to some extent age contributes factor to the increased risk.
Thus, by meta-analysis, it was found that cardiovascular, renal, cerebrovascular, and comorbidities in COVID-19 patients increase their severity, and age may not play a role in this.
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A _______ is a basic unit of hereditary information. It contains a specific segment of DNA that influences a particular trait or group of traits.
A.
nucleus
B.
gamete
C.
genome
D.
gene
[tex]{\huge{\red{\sf{D. \ GENE}}}}[/tex]
Answer:
D
Explanation:
my answer is thiswkwkwkwkwkwk
emily has epilepsy. based on the textbook's discussion of neurotransmitters, emily should avoid foods made with: please choose the correct answer from the following choices, and then select the submit answer button. answer choices dopamine. serotonin. monosodium glutamate. acetylcholine.
Emily should avoid foods made with monosodium glutamate.
We can define epilepsy as a kind of disorder in which the brain undergoes multiple seizures. The electrical functioning of the brain keeps on being affected which results in multiple seizures.
A person's consciousness, changes in movement and sensations can all be altered by epilepsy.
The common triggers that enhance for epilepsy are stress, lack of sleep, alcohol etc. In some people, monosodium glutamate that is often found in canned foods and artificial sweeteners can trigger epilepsy. Hence, as Emily is suffering from epilepsy, she should avoid foods made with monosodium glutamate.
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the eyeless gene is required for eye formation in drosophila. it encodes a homeodomain. a. what would you predict about the biochemical function of the eyeless protein? b. where would you predict that the eyeless gene is expressed in development? c. the small eye and aniridia genes of mice and humans, respectively, encode proteins with very strong sequence similarity to the fly eyeless protein, and they are named for their effects on eye development. devise one test to examine whether the mouse and human genes are functionally equivalent to the fly eyeless gene.
According to the given statement:
a:- Potential use for its protein is as a DNA-binding transcription factor that binds to specific DNA sequences.
b:- It is possible to do gene deletion experiments to see if Drosophila will retain its eyes or go blind.
c:-Transgenic tests can be used to determine whether the Small eye and Aniridia genes function similarly to the fly eyeless gene.
Briefing:In Drosophila, the eyeless gene is necessary for the development of eyes. Given that it encodes for a homeodomain, its protein may have a role as a transcription factor that binds DNA in a specific sequence. In situ hybridization can be used to study the gene's mRNA expression pattern, and immunological methods can be used to study the protein.
A. Since the eyeless gene in Drosophila encodes for a homeodomain, one potential use for its protein is as a DNA-binding transcription factor that binds to specific DNA sequences.
B. As implied by its function, the eyeless gene should be expressed in the Drosophila cells in charge of eye formation. In situ hybridization of the gene's mRNA expression is one potential test to find the gene. The protein can also be seen via a variety of immunological and staining methods. It is possible to do gene deletion experiments to see if Drosophila will retain its eyes or go blind. Additionally, genetic engineering can determine whether the eyeless gene expressed in other organs can result in the creation of eyes.
C. Transgenic tests can be used to determine whether the Small eye and Aniridia genes function similarly to the fly eyeless gene. Since both of these function as master switches for the genes that create eyes, it is possible to transfer the mouse Small eye gene into Drosophila to observe whether it is expressed. These, however, are simply Drosophila eyes and not comparable to mouse eyes.
Describe DNA:All known organisms, including many viruses, require deoxyribonucleic acid, a polymer comprised of two polynucleotide chains that coil around one another to create a double helix, to develop, function, grow, and reproduce. DNA and ribonucleic acid are examples of nucleic acids.
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give a definition for the term "homology". what are two examples of homologous characteristics that today’s whales share with other mammals? why would the sleek shape of whales and their fins be analogous, and not homologous, to those of fish?
The link between DNA or structures descended from the most recent common ancestor is known as homology.
For Example, Two prominent examples of homologous structures in evolutionary biology are the arms of primates and bats. Even though these two structures don't function or look like their most recent common ancestor, they are connected genetically. This means that a species' homologous traits may be accounted for by the fact that they have a common ancestor.
Flippers of Whale resembles with the Bat wing and the forelimb of human.
The whale fins help in swimming, bat wings help in flying, and the human forelimb helps in other normal works
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invertebrates and fish that eat dead organic matter will be most abundant in the of freshwater lakes.
Invertebrates and fish that eat dead organic matter will be most abundant in the benthic zone of freshwater lakes.
In a marine water body, the most lowest zone in terms of ecology is called benthic zone. It name comes from the Greek letter βένθος which means 'depths'.
In this zone, sediments lay down at floor of the sea and provide essential nutrients and minerals to the organisms living in this zone.
Benthic zone, also referred to as ecological zone, possesses peculiar characteristics such as high pressure and low temperature.
The sediments of this zone recycle the nutrients and help in the survival of aquatic organisms.
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maskless writing of microfluidics rapid prototyping of 3d microfluidics using scratch on a polymer substrate
Maskless writing of microfluidics rapid prototyping of 3d microfluidics using scratch on a polymer substrate
It is presented as a new rapid prototyping method built for simple fabrication of 3D microfluidics by use of a maskless direct writing technique on polymer substrates.
The whole process is capabled by a commercial cutter plotter with 10 μm resolution accuracy and high speed.
A CAD design of top and bottom microstructures is straightly written on a polymer substrate using a cutter plotter after setting up the compatible force. The modest channel width of 20 μm was received with the minimum force and 100 μm from the maximum. Also the written profound increased linearly with force from 30 to 130 μm.
Several 3D microfluidic devices are illustrated using a maskless writing technique. The whole manufacturing process from CAD layout to a final 3D device can be completed in 30 min outside the clean room facilities.
These results illustrated maskless fabrication of 3D microfluidic devices with controlled microstructure patterning appropriate for many polymer substrates. The technique is competent of fabricating microfludic devices with microchannels as small as 20 μm wide and 30 μm deep in less than 30 min.To know more about polymer visit : https://brainly.com/question/14600435
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darwin was well aware of what effect his theory of evolution would have on the public and on the church of england.
Darwin was well aware of what effect his theory of evolution would have on the public and on the church of England.
The statement is true.
Darwin's groundbreaking theory was that new species do not originate from God's eternally unchangeable creation but rather develop organically via a process of evolution.
Darwin held off on releasing his findings for several decades while he gathered more evidence because he was fully aware of the effect his theory of evolution would have on the general public and the Church of England. He suggested that natural populations can also change after citing selective breeding of tamed animals as proof that groupings of creatures can undergo change.
The public and religious establishment in Britain was astonished when Darwin's work was first made public in 1859.
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No exceptions to the central dogma exist. Rna is always transcribed from dna, and rna is translated to produce proteins. True or false?.
The statement 'no exceptions to the central dogma exist. RNA is always transcribed from DNA, and RNA is translated to produce proteins' is false.
Central dogma can be described as a process in which information from the DNA is converted into mRNA which in turn makes proteins. The process of making mRNA from DNA is referred to as transcription. The process of translating the mRNA into an amino acid sequence for the formation of proteins is referred to as translation.
When the retroviruses were discovered, an exception in the central dogma was observed. Retroviruses could change information from RNA to DNA through reverse transcriptase. Hence, the idea that DNA always changes into RNA is not correct as, in some cases like the retrovirus, RNA can convert into DNA.
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Type the correct answer In each box.
Use numerals Instead of words.
A force of 25 newtons moves a box a distance of 4 meters In 5 seconds. 5
The work done on the box Is
Nm, and the power S
Nm/S.
Reset
Next
Refer to the answer below for the question:
Force = 25 N
Distance = 4 m
Time = 5 s
WorkThe formula for work done is,
Work (W) = F x s
where,
F = force applied
s = displacement of the object
Therefore, the work done by the box will be,
Work = 25 N x 4m = 100 Nm
PowerThe formula for power is,
Power = W / Δt
where,
W = work done
Δt = time taken to do the work
Therefore, the resultant power required to move the box will be,
Power = 100 Nm / 5 s = 20 Nm/s.
Hence the answers are, work = 100 Nm and power = 20 Nm/s.
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Which group of organisms contains no representative species that are known to fix nitrogen?.
Eubacteria group of organisms contains no representative species that are known to fix nitrogen.
Are microorganisms that fix nitrogen present all plants?It is known that some members of all major plant groups, as well as some fungi, can form symbiotic relationships with nitrogen-fixing bacteria. Although nitrogen-fixing bacteria have been found in animals, such as termite stomachs, there is still debate over the importance of these organisms to their hosts.
Eukaryotes are organism whose cells contain a nucleus and other membrane bound organelles. There is a wide range of eukaryotic organism, including all animals , plants , fungi , and Protists as well as most algae.
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formulate three questions a scientist might wonder about after reviewing this data, demonstrating the merit these findings have in the scientific community about florida panther
The questions that a scientist may formulate are regarding the sample size, the difference between the hypothesis and observation, cause of the result can be asked by the scientist regarding their research.
What is scientific data?Scientific data is a relational category that is applied to the results of the study. These are noticed at certain times during the experiment and are used to support the knowledge and interest claims made by the researchers taking part in the investigation.
With regard to themselves, they lack integrity. Additionally, they do not accurately depict certain phenomena. They are fairly malleable items that may be scaled up or down, and their value as evidence defines them.
Therefore, questions regarding the sample size, the difference between the hypothesis and observation, cause of the result can be asked by the scientist regarding their research.
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9. Explain the benefits and
limitations of each
type of scientific investigation.
The benefits and limitations of each type of scientific investigation are listed below:-
Benefits:-
A descriptive investigation is concerned more about observations related to natural systems which are recorded through a systematic method of data collection. A comparative investigation do not essentially require control variables since it is not carried in a laboratory.An experimental investigation tends to study the 'cause' and 'effect' relationship between two variables through the use of control variables in order to maintain a constant environment.Limitations:-
A descriptive investigation fails to compare the data collected and establish a causal relationship between the variables.A comparative investigation fails to control the variables that are present naturally and might affect the research.An experimental investigation may sometimes fail to explain real-life incidents since they are based on a hypothesis.To learn more about descriptive investigation here
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what term describes the measure of how quickly a carbohydrate will raise an individual’s glucose levels when consumed on its own, irrespective of the amount eaten?
Glycaemic index is used to measure the amount of carbohydrates that will raise an individual’s glucose levels.
Glucose is a sweet sugar and belongs to the class of carbohydrates.
It is obtained from food that we consume and in response our body utilizes it for energy purposes.
Glycaemic index of food refers to the time period during which carbohydrates are disintegrated and absorbed in the blood.
If GI is higher then it will enter the blood more quickly as compared to lower GI levels.
Higher GI levels means higher glucose levels in the blood and vice versa.
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Why don't birds get electrocuted when they land on an electric wire? Pls answer, will give 20 points.
A bird just sitting on a wire doesn't touch the ground, or anything in contact with the ground, so electricity stays in the power line. However, if a bird were to touch a power line as well as equipment or other metal that is grounded, it could potentially give electricity a path to the ground and the bird could be shocked.
When a bird is perched on a single wire, its two feet are at the same electrical potential, so the electrons in the wires have no motivation to travel through the bird’s body. No moving electrons means no electric current. The bird is safe, however if that bird stretches out a wing or a leg and touches a second wire, especially one with a different electrical potential, it will open a path for the electrons — right through the bird’s body.
Power lines carry alternating currents or AC where the electric current regularly changes direction. Over time the voltage alternates between positive and negative indicating the direction of voltage flow. Voltage is the difference in charge between two points, whilst current, measured in amperes, or amps, is the rate at which the charge is flowing. The number of cycles per second is measured in Hertz (Hz) and average power lines have a frequency of 50 Hz. Because the voltage in the wire is constantly changing, the voltage of a bird sitting on a wire is also changing. In other words, the bird is constantly being charged and discharged through its feet.
The other thing we need to think about is the capacitance of the bird. This is the ability of the bird to collect and store electric charge. Because birds are very small and shaped a bit like spheres, they can’t store much electric charge. In fact, when a bird sits on a 50 Hz power line it can only carry a current in the order of microamps (μA), or 0.00000001 amps.
So although the bird does have a current running through its body, it is too small to electrocute it or even give it an electric shock. For comparison, a current of about 10 milliamps (0.01 amp) is enough to produce a painful shock in humans, and electrocution is possible from about 50 milliamps. We don’t know whether birds perched on power lines can feel the current going through their bodies. Perhaps they enjoy the buzzing sensation that they may be feeling and perhaps this explains why you don’t often see big birds, with a larger capacity, sitting on power lines.
A bird is also made of cells and tissues. These cells and tissues do not provide the electricity in the wire with an easier route to travel than the one it is already on. Because a bird's body is not a good conductor of electricity, the electricity essentially ignores the bird on the wire and continues to travel along the copper wiring to its destination. In fact, humans would also be able to not be shocked by a power line if we hung suspended from the power line with both of our hands on the line and no other grounding objects around us.
Answer:
bird's don't get electrocuted when they land on electric wire because their legs don't have blood
67. huang hh, liang y. integrating molecular interactions and gene expression to identify biomarkers and network modules of chronic obstructive pulmonary disease. technol health care 2022; 30: 135-142.
Chronic obstructive pulmonary disease (COPD) is the world's top cause of death for the greatest number of individuals, known for its chronic obstructive diseases, chronic bronchitis, and emphysema.
How genes impact on COPD?The precise causal process of COPD is still unknown, despite several attempts to discover biomarkers and pathways. In order to better understand the biological mechanism and network module underlying COPD, this study integrates information on biological interactions with information on gene expression. 49 genes were chosen using a sparse network-based technique from the peripheral blood mononuclear cell expression data of 136 participants, comprising 42 ex-smokers and 94 COPD patients. The findings indicate that these 49 genes may have an impact on COPD-related biological functions and molecular processes.Learn more about the COPD with the help of the given link:
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Two separate polypeptide chains are most commonly covalently linked to each other through.
Two separate polypeptide chains are most commonly covalently linked to each other through disulfide bonds.
A peptide is two or more amino acids that are held together with the help of peptide bonds
A protein chain has two ends: one is the amino terminus (positively charged) and the other one is the carboxy terminus (negatively charged).
Disulfide bonds which are mostly found between the sulfur-containing side chains of cysteines contribute to the formation of the tertiary structure of proteins.
These bonds act like safety pins as they keep the different polypeptide chains held together firmly and give a shape to the protein folding.
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Each myosin protein has a globular head that extends outward from the myosin filament. True or false?.
True: Each myosin protein has a globular head that extends outwards from the myosin filament.
Actin and myosin are the two types of proteins found in every kind of muscle cell or tissue. The thick filament is called myosin and the thin filament is called actin. The myosin and actin filament slide over one another to cause movements. The globular head of the myosin proteins in the myosin filament is extended outwards to facilitate the binding of actins.
The myosin filament in muscles consists of two heavy chains and two pairs of light chains. Each heavy chain consists of two parts: globular head region and ∝-helical tail. The globular heads of the myosin bind actin and form a cross-bridge between the thick and thin filaments. Myosin heads also bind and hydrolyze ATP to derive the energy required for sliding.
The globular head of the myosin protein is extended outward from the individual filament to facilitate actin binding.
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novel cell types and developmental lineages revealed by single-cell rna-seq analysis of the mouse crista ampullaris
On ampullae microdissected from E16, E18, P3, and P7 mice, single-cell RNA-seq was carried out.
Briefing:The crista's hair cells, support cells, and glia were discovered by cluster analysis, along with the ampulla's dark cells and other nonsensory epithelial cells, mesenchymal cells, vascular cells, macrophages, and melanocytes.
The new cell types identified by single-cell RNA-seq may be crucial for comprehending crista function, and the markers found in this study may make it possible to examine how these cells change during development and disease.
Where are the vascular in the body?The network of blood vessels known as the vasculature connects the heart to all other organs and body tissues. Organs and tissues receive oxygen-rich blood and nutrients from the heart through arteries and arterioles, while deoxygenated blood is returned to the heart by veins and venules.
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The biggest difference between channel proteins and carrier proteins, is that...
A. channel proteins can also allow much larger particles to cross the membrane than carrier proteins can.
B. carrier proteins are usually very narrow and takes on a specific shapes, and channel proteins change shape.
C. channel proteins require movement, unlike carrier proteins.
D. unlike channel proteins, carrier proteins do not create a continuous open passage all the way through the membrane.
The biggest difference between channel proteins and carrier proteins, is that unlike channel proteins, carrier proteins do not create a continuous open passage all the way through the membrane. That is option D.
What are protein transporters?Protein transporters are those molecules found on or within the cell membrane that helps in the transportation of ions in and out of a cell.
Examples of protein transporters include the following:
Channel proteins: These are the protein transporters that penetrates through the cell membrane thereby allowing the flow of ions in and out of the cell through the process of diffusion.Carrier proteins: These are protein transporters that are located on the surface of a cell membrane without penetrating through it.Therefore, the biggest difference between channel proteins and carrier proteins, is that unlike channel proteins, carrier proteins do not create a continuous open passage all the way through the membrane.
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Which of the following is not one of the eight characteristics of life?
A) Homeostasis
B) Growth
C) Movement
D) using energy and resources
Answer:
Suppose D since even non living things could use energy