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Black_prince [1.1K]
3 years ago
14

CD8 helps with recognition of which of the following molecules on the surface of a cell?

Biology
1 answer:
Shalnov [3]3 years ago
7 0

Answer:

MHCI

Explanation:

Major histocompatibility complex I (MHCI) is present on the nucleated cells of the body. Endogenous pathway represents the pathway of MHC class I molecules.

MHCI display peptide fragment of proteins to the cytotoxic T cells with the help of CD8 ( Cluster of differentiation). CD8 binds with the MHCI and expressed on the surface of cytotoxic T cells.

Thus, the correct answer is option (D).

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Competition between species can be a limiting factor in an ecosystem<br> True<br> False
Rufina [12.5K]

Answer:

True

Explanation:

because it can be a limiting factor in an ecosystem

3 0
2 years ago
What is the function of the structure identified by the red arrow?
Ket [755]

The structure shown by the red arrow is cell membrane.  

In biology, cell membrane refers to the thin layer, which develops the external boundary of a living cell. It has three primary functions, which are as follows:  

1. It comprises channels and receptors, which permits particular molecules like nutrients, ions, metabolic components, and wastes to pass between the cell and the outside environment.  

2. It prevents toxic components from entering the cell.  

3. They distinguish essential but incompatible metabolic procedures conducted within the cell.  


7 0
3 years ago
Read 2 more answers
How are Lex and the worker at the unemployment office similar?
White raven [17]
Good define unemployment as having no job teheheheh
8 0
3 years ago
Explain how chromosome behavior during meiosis ensures transfer of parental traits to offspring
gizmo_the_mogwai [7]

Explanation:

During meiosis, sister chromosomes of a homologous pair separate into different cells during gamete formation . This mainly occurs in Metaphase I of meiosis where the homologous chromosomes line up the metaphase plate in their sets. Each chromosomes of a pair are then pulled to different poles of the cells separating them. Each of these chromosomes carries a set of alleles of a gene. Each cell/gamete, therefore, carried half the set of alleles of all genes compared to autosomal cells. There many combinations of these sets that can occur depending on the number of chromosomes the organism has.

These cells when combined with that of another parent during fertilization, form a zygote that grows and develops into a mature organism. The offspring will bear the characteristics of both parents because it inherits half a set of chromosomes from both parents.

Learn More:

For more on meiosis check out;

brainly.com/question/11701550

brainly.com/question/1271878

#LearnWithBrainly

6 0
3 years ago
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What is embedded in the phospholipid bilayer that helps in the movement of larger molecules ?
gladu [14]

Answer:

\boxed {\boxed {\sf A. \ Channel/Transport \  proteins}}

Explanation:

The phospholipid bilayer is also known as the cell membrane. It covers cells and regulates the transport of substances. Certain ones can pass and others cannot, depending on certain factors like size and polarity.

Smaller substances tend to diffuse or move across the membrane quite easily. However, larger molecules have a much harder time. Many depend on special proteins embedded in the membrane. These are called transport proteins and they form a channel so large molecules can still move in or out of the cell.

So, salt, water, and fats do not contribute to the movement of larger molecules, but <u>channel or transport proteins do and choice A is correct. </u>

3 0
2 years ago
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