Antibody diversity is a consequence of
A) the huge number of antibody genes.
B) shuffling of antibody genes into different combinations during B cell development.
C) differential regulation of antibody gene expression under different circumstances.
D) the many types of viruses that exist in nature.
B) shuffling of antibody genes into different combinations during B cell development.
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A problem with the action or production _______ leads to both type I and type II diabetes mellitus
A. glucagon B. growth hormone C. thyroid hormone D. insulin E. cortisol
Which of the following is FALSE for the electrical synapse?
What will be an ideal response?
The two basic types of tissue membranes are ____
a. connective tissue and nerve b. epithelial and connective tissue c. epithelial and nerve d. nerve and muscle e. connective tissue and muscle
Protons are pumped out of the cell, which creates a proton gradient and a charge gradient. This dual energy source is Used by symport to concentrate nutrient inside the cell.
a. true b. false