Answer:
I think the insects are the answer
Explanation:
In terms of numbers of species, insects certainly represent the largest percentage of the world's organisms. There are more than 1 million species of insects that have been documented and studied by scientists.
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what is the term used to describe the accumulation of small changes in the gene pool of a species over time
Answer:
Microevolution
Explanation:
I just know
HELP ME PLS ITS SUPER URGENT!!!
Answer:
C
Explanation:
Because it is formed in mud and things like that.
waves where the particels travel at right angles to the driction of the wave itself
Answer:
Transverse wave
Explanation:
A transverse wave is a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels. Another example of a transverse wave is the wave that passes through a rope when you shake one end of the rope up and down, as seen in the figure below.
Which statement is true about a cell wall but not a cell membrane?
It forms the outer layer of a cell.
It gives an animal cell its shape.
It is selectively permeable.
It is made mostly of cellulose.
Answer:
It is made mostly of cellulose.
Explanation:
How could you determine whether two groups of organisms that live in two different parts of the world were members of the same species, according to the biological species concept
Answer:
organisms belong to the same biological species if they can interbreed and produce viable fertile off springs
Activate cytotoxic T cells and other helper T cells as well as activate B cells
(1 Point)
Helper T Cells
Interferons
Suppressor T Cells
Cytotoxic T Cells
Helper T-cells activate cytotoxic T cells and other helper T cells as well as activate B cells. Helper T cells are the most important cells in adaptive immunity.
What do you mean by Cytotoxic T cells?Cytotoxic T cells may be defined as a type of immune cell that can destroy certain cells, including foreign cells, cancer cells, and cells contaminated with a virus.
Helper T cell not only activates the B cell but also helps in the activation of cytotoxic T cells to destroy infected target cells. Helper T cells also reform or differentiate themselves.
Therefore, Helper T-cells activate cytotoxic T cells and other helper T cells as well as activate B cells.
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Students wanted to perform an experiment to mimic natural selection. They noted that small plants growing in the school garden had projections that extended from the leaves. These projections are called trichomes. They hypothesized that the trichomes protect the plant from herbivory, when herbivores eat the leaves from the plants and cause damage. The students counted the average number of trichomes per leaf and plotted this on the top graph, shown here. They then selected parent plants that had a higher than average trichome number per leaf to pollinate, creating a new generation of plants. The distribution of average trichome number for the second generation is shown in the bottom graph.
Which statements below are supported by the information shown here?
A) The trichome number is controlled by a genetic factor.
B) Directional selection occurred due to the student's experiment.
C) Herbivores can no longer consume the plants in the second generation.
D) The genotypic frequencies of the first and second generation should be identical.
E) Artificial selection can alter phenotype frequencies in as few as two generations.
Answer:
A, B, E
Explanation:
The trichome number is controlled by a genetic factor and Directional selection occurred due to the student's experiment are distribution of trichome.
What is Trichome?Trichomes are present throughout the plant kingdom and exhibit an amazing range of characteristics and shapes. On vegetative and reproductive organs, glandular trichomes grow from the epidermis.
The two types are commonly classified as secretory and non-secretory, with the former having the ability to secrete chemicals
Within a plant species, trichome morphologies and metabolic secretions are uniform, and some species have various trichome morphs on the same plant organ. While various glandular trichome morphs employ various storage techniques, the design of the morph and cavity.
Therefore, The trichome number is controlled by a genetic factor and Directional selection occurred due to the student's experiment are distribution of trichome.
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Help me please do this
Answer:
I believe the anwser is 75%
Explanation:
If both parents which i am assuming they are Bb we can do a punnet square.
B b
B BB Bb
b Bb bb
So 75% of the offspring would be Heterozygous Dominant while 25% of the offspring would be Recesive.
Hope this helps! (If i am incorrect please let me know)
What is the difference between learned and inherited behavior? question 18 options: learned behavior is something that animals are born with. inherited behavior is taught to a newborn animal. learned behavior is something that cannot change over time. inherited behavior changes over time. learned behaviors are taught during an animal’s life span. inherited behavior is something that animals are born with. learned behavior is passed down through each generation. inherited behavior is obtained from watching other species.
The difference between learned and inherited behavior include the following:
Learned behaviors are taught during an animal’s life span. Inherited behavior is something that animals are born with.What is Behavior?This is defined as the manner in which individual acts in their environment and are of two types known as learned and inherited behavior.
Their features are appropriately shown above.
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When using PCR to study DNA, the base pairs split and the DNA cleaves into single strands. What stage of the process does this MOST accurately describe?
A. annealing
B. denaturization
C. extension
D. hybridization
The stage of PCR being represented by the the splitting of base pairs and the cleaving of DNA into single strands is denaturation.
What is PCR?PCR means polymerase chain reaction. It is a biological technique in molecular biology for creating multiple copies of DNA from a sample.
The stages involved in the polymerase chain reaction are as follows:
Denaturation of the template into single strands Annealing of primers to each original strand for new strand synthesisExtension of the new DNA strands from the primersTherefore, stage of PCR being represented by the the splitting of base pairs and the cleaving of DNA into single strands is denaturation.
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Answer:
denaturization
Explanation:
Denaturation defines the unfolding or breaking up of a protein, modifying its standard three-dimensional structure. Proteins may be denatured by chemical action, heat or agitation causing a protein to unfold or its polypeptide chains to become disordered typically leaving the molecules non-functional.
Which of the following statements apply both to enzymes and to any other catalysts? a Their activity is stopped by high temperature. b They speed up chemical reactions. c They are proteins. d They are not used up during the reaction.
The only group of animals that begin their lives in the water breathing with gills and as adults can live on land breathing with lungs and go through metamorphosis is the ____? question 14 options: echinoderms mollusks amphibians reptiles
Answer:
C.
Explanation:
amphibians is the answer
A developer wants to build a hotel along the Indian River Lagoon estuary in Florida. What impact
would this most likely have on the estuary?
1.) Decreased salinity of the estuary water
2.) Increased primary productivity in the estuary
3.) Loss of breeding and nursery grounds for marine species
4.) Loss of coral reefs and the species that live there
If this e-stuary is converted to a place used to build a hostel, there will be loss of breeding grounds for marine species.
What is an e-stuary?An es-tuary is a point where salt water and fresh water meet. The es-tuaries are characterized by changes in salt concentration.
Now, if this estuary is converted to a place used to build a hostel, there will be loss of breeding grounds for marine species.
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The thalamus acts as a relay station for all senses except smell. How does the location of the thalamus within the brain help with this function?.
Answer:
I'm not so sure but this is what our teacher told us.
The thalamus sorts the important information from the insignificant before sending information to the cerebral cortex of the brain.
Which percentage of the solar energy that the earth absorbs does the it's surface
radiate?
2
15
50
75
Answer:
The correct answer is is 71 percent. Give me Brainiliest
After blank
occurs, the cytoplasm of the cell completes its division into two daughter cells during
a process known as blank
a. M phase; interphase
b. metaphase; prophase
C. G2 phase; telophase
d. telophase; cytokinesis
Answer:
D
Explanation:
During cytokinesis, the cytoplasm gets divided into two daughter cells
Explain why water is essential for the process of seed germination.
Answer:
Water is an important external factor that triggers the process of germination. The seeds absorb the moisture and swells up. Then the hydrolytic enzymes become active which will break down the reserve food materials so as to make it available for the growth of embryo resulting in the germination.
Explanation:
water is essential for the process of seed germination because it helps by providing necessary hydration for the vital activities for protoplasm, provide dissolved oxygen for the growing embryo softens the coats and increase the seed permeability
2. An ecosystem contains organisms interacting with each other and their physical environment
Which of these is the best indicator of a healthy ecosystem?
Answer:
give me answer choices
Explanation:
An ecosystem contains the organisms that are interacting with each other in order to maintain a healthy environment and their physical environment. The dependency is shown in the food chain and the habitat.
What is the primary producers name in the list of ecosystem ?It is the plants that produce the food in the presence of sunlight and this solar energy via the photosynthesis makes the plants cook their food.
1. Environment involves both living organisms and the non-living physical conditions.
2. These two are inseparable and inter-related.
3. The living and physical components are linked together through nutrient cycles and energy flows.
The nutrient cycle is inter linked where the food that one is eating is the dependent on other organism. The organisms are dependent on each pother for the food and the species are inter linked with each other.
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2. Which of the following compounds in living things contain carbon?
a. sugars
b. starches
c. proteins
d. all of the above
Answer:
D.) All of the Above
Explanation:
Carbon is represented by the letter "C" when included in chemical formulas. All of the compounds listed contain a large quantity of carbon.
The most basic unit of sugars are glucose molecules. They have the following formula: C₆H₁₂O₆.
A basic starch molecule is represented by the formula: C₆H₁₀O₅.
Proteins, in their simplest form, have this standard structure: R-CH(NH₂)COOH.
_______ flow inward to the central nervous system from sensors in the periphery, while _______ flow outward from the central nervous system to the periphery.
afferent signals flow inward to the central nervous system from sensors in the periphery, while efferent signals flow outward from the central nervous system to the periphery.
What is the reflex arc?The reflex arc refers to the sequence of events since the body receives external stimuli until it reacts to it.
In general terms,
1. a stimulus of varying nature reaches the body,
2. the peripheric nervous system -PNS- receives the stimulus and sends this information to the central nervous system -CNS-.
3. The CNS processes the information and sends another signal as a response to the stimulus.
This mechanism is known as the reflex arc, and it is composed of five elements,
- Receptors,
- Three types of neurons,
Afferent or sensorial neuronsInterneuronsEfferent or motor neurons- Effectors.
Due to technical problems, you will find the complete explanation about the reflex arc in the attached files.
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She always prepared food.(Yes/No question)
Answer:
YesShe always prepared food.
The organelle responsible for
capturing light energy and
converting it to chemical energy
is called the ...
A. ribosome.
B. chloroplast.
C. mitochondria.
Answer:
B. chloroplast
Explanation:
Answer:
B. chloroplast
Explanation: Chloroplasts capture light energy from the sun to produce the free energy stored in ATP and NADPH through a process called photosynthesis.
Sperm become capable of movement while in the _____. seminiferous tubules vas deferens ejaculatory ducts urethra epididymis
Sperm become capable of movement while in the epididymis. The sperm which is a male reproductive cell can further be discussed below.
Where are sperms produced in the body?The sperm is the cell of the male reproductive system which is produced in the testes.
The testicles are made up it tiny tubes called seminiferous tubules which houses germ cells that divide and change until they resemble tadpoles with a head and short tail.
They are then moved to the epididymis where their development is completed after five weeks. Active movement of the sperm in the epididymis starts after its full development.
Therefore, Sperm become capable of movement while in the epididymis.
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Secrete acute respiratory syndrome (SARS) is an illness caused by a coronavirus. Symptoms including a high fever, headaches, and body aches typically occur two to seven days after infection by the virus. SARS is more serious in elderly patients. This information suggests that the reproductive cycle of the SARS virus is –
a. Lysogenic, because the virus is a coronavirus
b. Lytic, because the virus causes respiratory illness
c. Lysogenic, because the virus primarily affects older people
d. Lytic, because of the quick onset of symptoms after infection
Answer: Lytic, because of the quick onset of symptoms after infection
Explanation: As seen in the question above, the SARS virus tends to develop symptoms very quickly when it is infecting a person. This speed in the development of symptoms is a characteristic of the lytic cycle, in relation to the reproductive cycle of viruses. This is because in the lytic cycle, a virus can infect many cells at once, which accelerates the development of the disease. This cycle allows the virus to use all of the cell's biological machinery to reproduce more copies of the virus. When these copies are ready, the virus causes the destruction of the host cell and the release of new viruses to other cells, where the whole process will be repeated. This is all done very quickly.
The lysogenic cycle does not cause the rapid infection of thousands of cells, since it is necessary that there is an adaptation between the DNA of the cell and the DNA of the virus. This slows down the infection process and, therefore, symptoms appear more slowly.
photosynthesis takes place in the ____ and releases _____
1.chloroplast, oxygen
2.mitochondria, carbon dioxide
3. chloroplast, carbon dioxide
4. mitochondria, oxygen
chloroplast, oxygen
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Upon absorption, fat-soluble vitamins travel through the lymphatic system within ________ before entering the bloodstream. a. chylomicrons b. albumin c. cholesterol d. osteocalcin e. calbindin
Upon absorption, fat-soluble vitamins travel through the lymphatic system within chylomicrons before entering the bloodstream.
What do you mean by the Lymphatic system?The lymphatic system may be defined as the tissues and organs that deliver, store, and bear white blood cells that combat infections and other diseases.
During the process of absorption. fat-soluble vitamins packaged into the chylomicrons which are further secreted into the lymphatic system before entering the bloodstream. These vitamins get stored in the adipose tissues.
Therefore, upon absorption, fat-soluble vitamins travel through the lymphatic system within chylomicrons before entering the bloodstream.
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You have touched a hot stove. Your nervous system is sensing this heat. Which root of the spinal cord is receiving this information
Sensory neuron
Hope this helps :))
The sensory neuron is the root of the spinal cord is receiving this information.
When 'You have touched a hot stove. Your nervous system is sensing this heat' then a reflex action is occur.
What is reflex action?Reflex action is the actions which are carried out without conscious thought by the brain.The reflex action occur very quickly and automatically.In reflex action stimulus is carried by sensory neuron to the spinal cord.Example of reflex action is removal of hand when it touches any hot object.Therefore , the feeling of heat is carried out to the spinal cord by the sensory neuron.
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Duriing exercise, what body condition is the body trying to keep in homeotasis?
Answer:
Because in our body constant supply of oxygen is support to the cells to works out muscles properly
Explanation:
Strep throat and bacterial pneumonia are examples of __________.
Answer:
Bacterial communicable diseases
Explanation:
Hope it's right
Answer:
communicable diseases
Explanation:
A decrease in blood pressure, detected by the afferent arteriole, will result in vasodilation. The glomerular blood pressure and the GFR will respond by ______.
A decrease in blood pressure, detected by the afferent arteriole, will result in vasodilation. The glomerular blood pressure and the GFR will respond by decreasing.
The effects of decreased blood pressure on glomeruliThe glomerular blood pressure is the pressure used to push blood and solutes from the arterioles through the glomerular filter membrane. Therefore it is the blood pressure at the glomerular capillaries.
The glomerular filtration rate (GFR) is the rate at which blood passes through the glomeruli each minute.
The decreased blood volume with its lower blood pressure will go into the afferent arteriole and into the glomerulus, resulting in decreased GFR and glomerular blood pressure.
Therefore, decrease in blood pressure, detected by the afferent arteriole, will result in vasodilation. The glomerular blood pressure and the GFR will respond by decreasing.
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