The snails and clams are classifies as molluscs as they belong to the phylum Mollusca.
Snails are organisms of the phylum Mollusca. They are small creatures identifiable by the presence of an outer spirally coiled shell. They can be found both on land and in water. They can locomote by the presence of a single foot formed only of the muscles.
Mollusca are the second largest group of invertebrates in the animal kingdom. Most of its organisms are aquatic. The presence of a calcareous crust is an important feature of the trunk. Examples of some organisms are oysters, clams, etc.
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is cell wall or cell membrane is living organle
Answer:
nooooooooooooooooooo it is not a living organelle
PLS HELP MEEEE!!!!!!!
Answer:
B. Introduced pollutants like fertilizers
Explanation:
The damage from runoff of fertilizers is very significant.
The vascular cylinder is located in plant _____.
xylem
roots
leaves
stems
Answer:
Roots and/or stemsExplanation:
The vascular cylinder, also know as the stele, is the central part of the root or stem containing the tissues derived from the procambium. These include vascular tissue, in some cases ground tissue and a pericycle, which, if present, defines the outermost boundary of the stele.
need help asap
question 13
- 20 points
Answer:
The Angle-Side-Angle Postulate (ASA) states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.
Explanation:
Answer:
the awnser is: A
Humans rely on sensory receptors to interpret messages about their surroundings. Sensory receptors respond to mechanical, physical, or chemical stimuli. There are different kinds of sensory receptors for detecting different kinds of stimuli. Chemoreceptors are specialized nerve cells that pick up chemical stimuli, such as smells or the pH level of foods. Such stimuli tell the brain and body to react a certain way to protect the body. If a person in a controlled test is introduced to a safe chemical stimulus, what is the most logical prediction you could make?
A. The person will bat the eyelids to push the chemicals away with the eyelashes.
B. The person will plug the nose to shield the body from offensive chemical smells.
C. The person will cover the ears to protect the ears from chemicals in loud noises.
D. The person will bite the nails to keep the chemical from seeping into the fingers
The most logical prediction you could make is the person will bat the eyelids to push the chemicals away with the eyelashes.
Internal organs as well as specialized organs like the eyes, ears, nose, and mouth include sensory receptors. Each receptor type transmits a unique sensory modality that eventually combines into a single perceptual frame.
Chemoreceptors are specialized nerve cells or receptors that detect changes in the chemical composition of the blood. The prefix "chemo-" alludes to the chemical makeup of the blood. The brain receives this data from the chemoreceptors to assist in maintaining the balance of the respiratory and cardiovascular systems.
They are proteins that detect and engage with particular chemicals known as ligands on the cell membranes.
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The image represents which biome? Also if you can please answer the other I will mark as Brainly!!!!!!
Answer:
1. Tundra
2. Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy, and rainfall is scant. Tundra lands are covered with snow for much of the year, but summer brings bursts of wildflowers. ( Sorry I don't see any text to find evidence from it. )
3. The mineral resources include major reserves of oil and natural gas, large quantities of minerals including iron ore, copper, nickle, zinc phosphates and diamonds.
I couldn't figure the last one I'm sorry!
a host is not considered diseased until an infection changes one's state of health. true or false
Answer:
it Is true
Explanation:
because he wouldn't have a virus and feel well
Why do phospholipids tend to spontaneously orient themselves into something resembling a membrane?
The hydrophobic, nonpolar regions of Phospholipids must align with each other in order for the structure to have minimal potential energy and, consequently, higher stability.
Because their fatty acid tails are poorly soluble in water, phospholipids spontaneously form bilayers in aqueous solutions, with the hydrophobic tails buried in the interior of the membrane and the polar head groups exposed on both sides, in contact with water.
Phospholipids in the lipid bilayer of a cell membrane orient themselves so that the heads face outward because the heads containing the phosphate group are hydrophilic and the cytoplasm of the cell is an aqueous environment.
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Categorize all the components involved in photosynthesis as either matter or energy!
Energy and matter are also produced during photosynthesis. Chemical energy in the form of glucose and matter in the form of oxygen gas is produced during photosynthesis.
The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis. The four stages of photosynthesis include light absorption, electron transfer, ATP production, and carbon fixation. The main purpose of photosynthesis is to transform solar energy into chemical energy, which is then stored for later use. This mechanism primarily provides energy to the planet's life systems. By the norms of human engineering, it is not particularly effective, but it gets the job done.
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What determines a cat's fur pattern?
A cat's color pattern is partly determined by a gene called DKK4.
Domestic Cats All cats have some sort of tabby in their genetics. The A gene is involved in cat patterns. A, or agouti, dominant, produces ticks or bands of color in the hair.
There are 6 types of cat hair patterns. These are tabby, solid, bicolor, tricolor, tortoiseshell and colorpoint. These different markings are attributed to cat genetics, and the results can be surprising.All domestic cats, even plain ones, have an underlying genetic pattern of tabby. Spots, Stripes, Spots:
A cat's fur color pattern resulting from an important gene.
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What does XY mean in pedigree?
In a pedigree, XY represents a male. Squares are also used to represent men. A pedigree analysis is a chart that depicts the inheritance of genes from parents to offspring in a family tree.
Linkage refers to the phenomenon of gene inheritance and the retention of parental gene combinations in offspring. The genes that are found on the same chromosome and are inherited together are known as linked genes, and the traits that they control are known as related traits.
A gene is a collection of deoxyribonucleic acids (DNA) that is passed down from parents to children. A gene is made up of many nucleotides that code for different proteins. The DNA contains the genetic information required for the proteins.
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what is physiography ?
Answer:
physiography originally means the study of nature . but here it means physical geography
Explanation:
hope it helps
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btw can i get brainliest
physiography (countable and uncountable, plural physiographies) (geography) The subfield of geography that studies physical patterns and processes of the Earth. It aims to understand the forces that produce and change rocks, oceans, weather, and global flora and fauna patterns.
Cellular Communication and the Cell Cycle FRQ:
a) Low extracellular pH activates TRPV1 through the binding of H + ions to TRPV1. Describe the properties, including the location, of the site of TRPV1 that allow H+ ions to bind. Describe the specific location in the cell where ATF3 protein is produced.
b) The pGoG protein is known to block the G1 to S transition in the cell cycle. Explain why this prevents mitosis from happening in the cell
Specifically, in sensory neurons, the plasma membrane of cells contains the cation channel protein TRPV1. Heat and low extracellular pH are only two of the many triggers that might cause it to become active.
The protein TRPV1 undergoes a conformational shift in response to the adsorption of H+ ions, opening the ion channel and allowing calcium ions to enter the cell. The subsequent signaling pathways that result in the perception of pain are activated by this calcium ion inflow.
ATF3 protein is exclusively synthesized in the cytoplasm of the cell, more particularly in the nucleus, where it is transcribed from the ATF3 gene.
The pGoG protein is known to block the G1 to S transition in the cell cycle by inhibiting the activity of the cyclin-dependent kinase (CDK) that is responsible for initiating DNA replication. This prevents mitosis from happening in the cell because, without DNA replication, the cell cannot divide.
Additionally, the pGoG protein also promotes the activity of the tumor protein p53 which is also known as the "guardian of the genome" and helps to prevent DNA damage and cell mutations, when it is activated it can stop the cell cycle and prevent mitosis from happening.
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In models of logistic population growth, _____. Group of answer choices new individuals are added to the population as N approaches K the population growth rate slows dramatically as N approaches K new individuals are added to the population most rapidly at the beginning of the population's growth only density-dependent factors affect the rate of population growth carrying capacity is never reached
In the logistic population growth model, population growth slows dramatically as N approaches K.
There are various mathematical models that can explain population growth. In the exponential growth model, population size follows a “J” shaped curve and grows very quickly. In the logistic growth model, population size follows an “S” shaped curve, growing rapidly and then leveling off.
When the population size N is well below the carrying capacity K, the population size increases rapidly, forming the first loop in S. As N approaches K, resources are limited, population growth slows down, the curve levels off, and his second loop to form an 'S'.
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A student reads in a newspaper that the soil in his area contains high levels of arsenic. Based on this information, he believes that his fellow high school classmates have this metal present in their bodies. To test his hypothesis, he conducts an investigation of the soil in his schoolyard to see if it is contaminated with arsenic. He tests seven different areas around the school and finds high levels of arsenic in each. He concludes that the students at the school must have high levels of arsenic in their systems as well. Which of these is the best evaluation of his conclusion?
A. His conclusion is valid because he tested enough areas of soil to validate his hypothesis.
B. His conclusion is flawed because he did not test the soil at the homes where the students lived.
C. His conclusion is valid because arsenic is a toxic metal and is easily absorbed by the human body.
D. His conclusion is flawed because he did not test the students to see if their bodies contained metal arsenic.
Answer: D. His conclusion is flawed because he did not test the students to see if their bodies contained metal arsenic.
Explanation:
According to the given situation, student has tested seven different areas around the school to determine the presence of arsenic in the soil and also found the presence of arsenic in the school system. But has not studied the presence of arsenic in the students to support the fact that the school students are also affected by arsenic. So, conclusions based on the presence of arsenic in the soil and the system is inconclusive for the present study.
In science, one example of a theory is the cell theory. If a scientist collects evidence that questions the basics of a scientific theory, this means the theory is
The correct option (b) Going to be refined by further investigation.
A scientific hypothesis is an explanation of the source of a natural phenomenon or occurrence. It is based on the data gathered during the experimental process. It is normally examined and confirmed on a regular basis using a proper scientific process. It is backed by observations, measurements, and data analysis gained after the scientific method has been implemented.
The substance of scientific theory is always changing as a result of new discoveries and studies.
On the basis of the above explanation, Going to be refined by further investigation. is the correct option (b).
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full Question: If a scientist collects evidence that questions the basics of a scientific theory, this means the theory is
flawed to the point of being invalid
going to be refined by further investigation
going to be proven wrong
not based on fact or evidence
how do fossils contribute to our understanding of earth's history?
Answer:
because fossils can be linked to millions of dead species like dinosaurs and which can be linked to much parts of our history
Explanation:
they can help us determine the geologic age and environment in which they were deposited
Please help me!!
Nondisjunction conditions in humans can cause genetic diseases such as Down syndrome. State the number of chromosomes and the characteristics that are found in an individual with Down syndrome.
Answer:
XXY and autism, heart disease are some of the characteristics found
What statement best describes why the process of meiosis is important to Mendel's law of independent assortment of traits on different chromosomes?
The correct answer (B) In a "fair meiosis", there is an equal probability of each allele going to the gametes.
Independent Assortment Experiment by MendelIn plants that were true-breeding for two characteristics, Mendel conducted dihybrid crosses. For instance, a plant with round seeds and the color of yellow seeds crossed pollinated with a plant with wrinkled seeds and the color of green seeds.
Round seed shape (RR) and yellow seed color (YY) characteristics are prevalent in this hybrid. Recessive traits include wrinkled seed shape (rr) and green seed color (yy).
The kids that resulted (or F1 generation) were all heterozygous for yellow seeds and spherical seed morphology (RrYy). This indicates that in the F1 generation, the dominant features of spherical seed shape and yellow color totally concealed the recessive traits.
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Full Question: What statement best describes why the process of meiosis is important to Mendel's law of independent assortment of traits on different chromosomes?
Meiosis provides a way for alleles to maintain the associations they had in the parental generation.
In a "fair meiosis", there is an equal probability of each allele going to the gametes.
In meiosis, the segregation of one pair of homologous chromosomes affects the segregation patterns of other pairs.
Homologous pairs of chromosomes line up at the metaphase plate in meiosis.
In meiosis, how each pair of homologous chromosomes segregates is unaffected by what other pairs do.
Due to a mutation, an autosomal cell in a multicellular organism does not receive the normal signal to stop dividing. What effect will this most likely have on the organism?
A.
It will experience tumor growth.
B.
It will be unable to reproduce.
C.
It will age at an increased rate.
D.
Its cells will become inactive.
How is ATP made from glucose?
Glucose is converted into ATP by cellular respiration.During glycolysis, a glucose molecule with six carbon atoms is converted into two molecules of pyruvate, each of which contains three carbon atoms.
The metabolic process known as cellular respiration, which takes place inside of cells, releases energy and waste products by converting biochemical energy from meals into the chemical compound adenosine triphosphate (ATP).
Cellular respiration transforms glucose into ATP.The aerobic respiration of one glucose molecule in the cytoplasm and mitochondria results in the production of 38 ATP molecules.
Glycolysis, the Krebs cycle, and oxidative phosphorylation are processes that take place during cellular respiration.
Two molecules of pyruvate, each having three carbon atoms, are produced during glycolysis from a single glucose molecule with six carbon atoms. Two molecules of ATP are hydrolyzed to give energy for the initial stages for every molecule of glucose, but four molecules of ATP are created in the later processes.
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If the resilience of a damaged ecosystem is low enough, the degraded area may not be restored by secondary succession. When this happens, the damaged ecosystem has reached ____.
A tipping point is the point of no return, when the damage to an ecosystem has been so great that it can no longer recover through natural processes, such as secondary succession.
The tipping point is typically reached when the resilience of the ecosystem has been severely weakened, meaning that the system is unable to respond and recover to disturbances and disturbances can no longer be easily reversed. This can be due to a number of factors, such as climate change, pollution, overuse of resources, deforestation, and so on.
When the tipping point is reached, the ecosystem may never recover in its original state and may be permanently damaged or even destroyed.
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PLSS HELP ME WITH THIS IMMEDIATELY!!! ILL MARK U BRAINIEST IF U DONT LEAVE A LINK OR GUESS!!
Answer:
Weathering
Explanation:
Weathering takes a long time to occur, usually through water moving through the ground or wind slowly changing the terrain.
Answer: weathering
Explanation: if you need an explanation then search up: "What are some slow changes to the earth's surface?"
A racing car has a mass of 800 kg. It undergoes an acceleration of 3.0 m/s2. What is the Force acting on the car. F=ma ()
multicellular life appeared about 1 billion years ago name the eon that corresponds to this
Answer:
The Proterozoic Eon
Explanation:
The eons are the longest periods of geologic time. The Proterozoic eon is the geological eon from the appearance of oxygen in the atmosphere until the emergence of complex life forms (e.g., marine invertebrates). The Proterozoic eon started about 2.5 billion years ago and ended 541 million years ago. This eon can be divided into three geologic eras: Paleoproterozoic (2,500 to 1,600 million years), Mesoproterozoic (1,600 to 1,000 million years) and Neoproterozoic (1,000 million to 541 million years).
Please help!
Students in Ms. Brown's class are making observations in the garden outside of the school. They make a list of all the abiotic and biotic factors in their notebook. Part of the list is below:
Gravel
Grass
Butterfly
Sunflower
Bird feeder
Flowerpots
Which items on the list are a part of the garden ecosystem?
A- Gravel, bird feeder, flowerpots
B- All the listed items are part of the ecosystem
C- None of the listed items are a part of the ecosystem
D- Grass, butterfly, sunflower
Answer:
It is D- grass, butterfly, sunflowers
The items throughout the list like grass, butterflies, and sunflowers are a component of the gardening ecosystem.
What exactly is an ecosystem?An ecosystems is an area where vegetation, animals, and certain other organisms interact with the surrounding environment, weather, and other variables to form a bubble of life. In ecosystems, biotic and abiotic factors—or nonliving ingredients. Biotic variables include plants, animals, and other types of species.
Why are ecosystems so important?Ecological systems keep our soil healthy, purify our air, regulate our temperatures, recycle elements, and provide us with food. They provide tools and raw ingredients for producing medicines and many other goods. They form the foundation of civilization and sustain our economies.
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one similarity and one difference between parasitic and predatory modes of feeding
Answer: The parasite obtains food and shelter from the host. Parasitism mode of life ensures food lodging and meals predatory modes is a relationship between
explanation:a Predator and a Prey in which the predator is a living organism that catches and kills another species for food. They do not get shelter from prey.
2. Baldness is a dominant trait. Tom's genotype for baldness is Hh. What describes Tom's genotype and phenotype?
homozygous; not bald
heterozygous; not bald
homozygous; bald
heterozygous; bald
This is all the information it gives
Food coloring molecules in both the hue yellow and the color blue are tiny.
What does the word "membrane" mean?The small piece that defines the external perimeter of a live colony or a interior cell compartment is known in biology as a membrane. The organelles are the spaces surrounded by internal membranes and have the plasma membrane as their external border.
What purposes do membranes serve?Therefore, the cell membrane serves two purposes: first, as a barrier preserving the components in and undesired things out, and second, as a gate permitting the passage of vital nutrients into the cell and the movement of waste products out of the cell.
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¿Qué es una fuente de luz?