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).
Answer:
The answer is b
Explanation:
Because if a individual moves in from somewhere else the population growth will be affected
Answer:
Heterozygous A: AO (remember, O type blood is a recessive allele. It's masked by A)
Heterozygous B: BB (h0m0zygous)
AO x BB --> AB, BO
Therefore, the genotypes of their offspring will be 1 AB to 1 BO, while the phenotypes will be 1 AB blood to 1 B blood.
I hope this answer helps you find what your looking for! :)
Answer:
Se evalúa que el mercado mundial de células madre crezca con una tasa compuesta anual de 7. 82%, durante el período de pronóstico de 2021 a 2028.
Explanation:
Answer:
The steps in translation are:
- <em>The ribosome binds to mRNA at a specific area.
</em>
- <em>The ribosome starts matching tRNA anticodon sequences to the mRNA codon sequence.
</em>
- <em>Each time a new tRNA comes into the ribosome, the amino acid that it was carrying gets added to the elongating polypeptide chain.
</em>
- <em>The ribosome continues until it hits a stop sequence, then it releases the polypeptide and the mRNA.
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- <em>The polypeptide forms into its native shape and starts acting as a functional protein in the cell.</em>
Explanation: