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MA_775_DIABLO [31]
3 years ago
15

Which receptor on the helper T-cell recognizes the specific antigen from an antigen-presenting cell?

Biology
1 answer:
spayn [35]3 years ago
8 0
TCR, or T-cell receptor. 
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The portion of the diencephalon that acts as a relay station for sensory impulses traveling to the sensory cortex is the _______
Hitman42 [59]

Answer: Thalamus

Explanation:

The thalamus part of the brain is known as the relay station for all the sensory information. This information can be any sought of smell, light, taste et cetera.

It is relayed further via thalamus. Myelinated fiber bundle originates from the lateral surface of thalamus and it terminates at the cerebral cortex.

It is a relay station for the information from brainstem, spinal cord and cerebrum towards the cortex.

4 0
3 years ago
Which of the following statements correctly describes how the force of gravity changes based on your location on Earth? Select a
likoan [24]
<span>The closer the object is from the center of the earth the stronger the pull of gravity would be.</span>
6 0
3 years ago
Two students are planning an experiment that will test how planaria (aquatic flatworms) respond to different environments. They
slamgirl [31]

Student 2 is right.

<h3>Constant variables</h3>

In research investigations, some variables should be kept constant across various experimental groups in order for the outcome of the investigation to be valid.

For example, in order to test how flatworms respond to different environments, one variable that should be kept constant is the flatworms. The flatworms to be used must be of the same species, sex, age, etc.

The investigator can then go ahead to divide the flatworms into two or more groups and then subject them to different environments. Other variables should also be kept constant in order to determine the effects that are only specific to the different environments only.

More on constant variables can be found here: brainly.com/question/474060

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7 0
2 years ago
Explain the difference between incomplete and codominace
kolbaska11 [484]

Answer:

An incomplete dominance bad heterozygous individual blends the two traits.

With codominance you'll see both alleles showing their effects but not blending whereas with incomplete dominance you see both alleles effect but they've been blended

3 0
3 years ago
Which of the following does a bacteriophage NOT have?
solong [7]

Bacteriophage doesn't have a nucleus.

Option C.

<h3><u>Explanation:</u></h3>

Bacteriophage is a virus that is present in our surroundings. Its a phage virus that attacks bacteria and killing it. Bacteriophage has a tadpole like structure with a polygonal head and a neck and 6 tails. The polygonal head is formed of carbohydrates, along with the neck and tails. The head has inside it DNA that is its nucleic acid and genetic material. It's not enclosed in any nucleus. It has some proteins inside the head too.

The phage virus attaches itself with bacteria and drills the bacterial cell wall by the neck and pushes the genetic material inside as a mode of infection.

4 0
4 years ago
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