In somatic hypermutation, the mutation of immunoglobulin genes occurs at much higher rates than the mutation rates observed in other genes
Indicate whether the statement is true or false.
Answer: TRUE
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In marine birds, excess salts are removed by:
a. salt glands in the tongue. b. salt glands above the eyes. c. concentrated urine. d. salt glands on the skin. e. salt glands in the mouth.
Consider the following two chemical equations:A
glucose + fructose ? sucrose + H2O, ?G = +27kJ/mole (or +6.5 kcal/mole) B. glucose + fructose + ATP ? sucrose + ADP + Pi, ?G = ?5kJ/mole (or ?1.2 kcal/mole) What is the overall ?G? a. 22 kJ/mole b. 32 kJ/mole c. -32 kJ/mole
d. -135 kJ/mole e. 135 kJ/mole
Which three stages or transitions in the cell cycle seem to serve as points of control (checkpoints)?
What will be an ideal response?
Bacillus thuringiensis produces
A. a toxin that causes food poisoning. B. single cell protein used as food. C. enzymes used in cheese-making. D. a biopesticide. E. All of the choices are correct.