The molecule that can carry foreign DNA into host cells is a(n) ____
a. cloning vector
b. transcriptase
c. DNA ligase
d. endonuclease
e. DNA polymerase
ANSWER: a
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In Type I diabetes, the body fails to produce insulin and thus individuals must inject themselves with insulin before eating
Based on your knowledge of the control of glucose levels in the blood, what would be the result of a Type I diabetic injecting themselves with too much insulin? A. Their blood sugar levels would drop to potentially dangerous low levels. B. Excess stores of glycogen would be broken down and released from the liver. C. Glucagon would be released from the pancreas. D. Muscle tissue would begin to break down. E. All of the answer options are correct.
Of all of the ions associated with generating the resting membrane potential, the permeability of the membrane to ________ is the most important.
A) sodium ions B) potassium ions C) chloride ions D) all of the above E) none of the above
In an antibody- mediated immune response, what causes effector helper T cells to release cytokines?
a. binding to antigen presenting dendritic cells
b. binding to a bacterial complement c. binding to a naive helper T cell d. binding to a B cell e. engulfing a bacterium
Mendel's dihybrid crosses, but not his monohybrid crosses, show that
a. some genes are linked together. b. the two alleles controlling a trait are divided equally among the gametes. c. alleles for different traits are inherited independently. d. one of the pair of alleles is dominant to the other. e. the crossing of two different homozygous forms will not produce any offspring in the first generation that will look like either of the parents.