Cytotoxic t-cells are able to recognize infected body cells because <u>the</u> <u>infected cells display foreign antigens</u>.
<h3>What do cytotoxic killer T cells do?</h3>
The helper T cell and the cytotoxic T cell are the two main subtypes of T cells. Helper T cells, as their names imply, "assist" other immune system cells, whereas cytotoxic T cells "kill" virally-infected cells and tumors. The TCR cannot directly bind antigen, unlike an antibody.
Killer T cells are also known as "cytotoxic" or "cytolytic" cells because they have unique molecular weapons that allow them to attack and kill other cells that are showing targets they are familiar with, such as a virus-infected cell or even a malignant cell. The processed cancer cell antigen, which is solely presented by MHC-class I, must be recognized by cytotoxic T lymphocytes. Helper T cells binding to a processed antigen on the same dendritic cell as the MHC-class II presenting a processed cancer cell antigen enhances cytotoxic T-cell complete activation.
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The category of macromolecules that holds your genetic information and manufactures proteins are the nucleic acids.
I think it might be the third on I’m not sure completely wait on a second person
Answer:
d. The addition or loss of less than a full set of chromosomes or chromosome pairs is the correct answer.
Explanation:
- Aneuploidy is an abnormal condition because the number of chromosomes is not normal.
- This condition occurs due to the presence of extra chromosomes or loss of chromosomes that unbalance the chromosome number.
- Aneuploidy can cause miscarriage, birth problems, alter the fetus development.
- Different disorders arise from the aneuploidy condition such as turner's syndrome, Klinefelter syndrome,trisomy,Edwards syndrome,Patau syndrome.
Mutation, genetic combination, and gene flow all add what to a population?
A.) genetic variation
B.) genetic uniformity
C.) evolution
<u>D.) natural selection</u>