Answer:
CD4 on the surface of helper T-cells.
Explanation:
MHC class II ( major histocompatibility complex) molecules are processed from the exogenous source. The presentation of antigen on cells are important for the adaptive immune response.
MHC class II interact with CD 4 present on the surface of T helper cells. This interaction is important for the generation of an immune response. Helper T cells can release cytokines and can perform phagocytosis.
Thus, the correct answer is option (C).
The correct answer is: B) continuous transcription of the structural gene controlled by that regulator
A regulatory gene is gene that encodes for a protein, such as a repressor (or activators) that controls the transcription of another gene or group of genes.
The regulatory gene of a repressible operon encodes for the repressor that inhibits gene transcription. So, when that repressor isn’t active, transcription occurs continuously.
False I think lol srry if not false
If we say something is beneficial, it must be positive
and really mean to give advantage to one thing or another. Wave energy is a
renewable energy since it can be used repeatedly over time without any problem
on supply. Hence the greatest benefit it can give would be:
decreased use of nonrenewable resources
Answer:
d
Explanation:
four daughter cells are produced in meiosis
