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Hunter-Best [27]
3 years ago
7

What role do all antigen-presenting cells (APCs) play?

Biology
1 answer:
lbvjy [14]3 years ago
4 0

Answer:

b). activation of T cells

Explanation:

An APC (antigen-presenting cell) can be described as an immune cell, which detects, uptakes, and informs the acquired immune response when an infection takes place. B cells, macrophages, and dendritic cells are antigen-presenting cells.

These cells play an important role in activation of T cells. T cells are unable to recognize soluble or free antigens and can only recognize antigens processed and presented by carrier molecules, such as MHC molecules.

Presence of MHCII molecules is a defining feature of APCs that process and present antigens to T cells. Hence, all antigen-presenting cells help in activation of T cells.  

Thus, the correct answer is option (b).

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Explanation:

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also, the population cycle because rodents live for a short period of time in the wild, but reproduce quickly. example; spring and summer seasons is when food is most plentiful for all species of wildlife,

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a

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4 0
3 years ago
1.Identifying characteristics of bacteria include _____.
katen-ka-za [31]
The best and most correct answer among the choices provided by the question is the fourth choice "all of the above."


<span>Bacteria vary from species to species, thus assigning many common traits to bacteria is difficult. Bacterialspecies are typified by their diversity. There are three notable common traits of bacteria, 1) lack of membrane-bound organelles, 2) unicellular and 3) small (usually microscopic) size.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
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A new disease has recently been discovered in a community, and you have been brought in to investigate. The disease appears to p
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Since The new disease transmits from one person to another via handshake that means that the disease is a directly transmitted disease, also given that the disease can be cured with the use of antibiotics shows that the causative agent is not a virus but a bacteria. bacteria are living organisms with their own machinery for self replication, therefore they do not need the host cell to replicate the disease before transmission.

Hence we can conclude that the disease is caused by a Pathogen which replicates without using host cells' replication machinery and it is directly transmitted.

Learn more : brainly.com/question/15514

6 0
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