Four of the five answers listed below are true
about specific hormones and their effects.
Select the EXCEPTION.
a. Thymosin helps T-cells mature.
b. Calcitonin lowers blood level calcium.
c. Pancreas secretes insulin and glucagons for
blood sugar regulation.
d. Cortisol affects the immune response.
e. Pituitary gland secretes hormones that
control the hypothalamus
E
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What is the relationship between recombination frequency and the actual physical distance on a chromosome?
A. As physical distance increases, the recombination frequency increases in a linear fashion. B. As physical distance increases, the recombination frequency decreases in a linear fashion. C. As physical distance increases, the recombination frequency first increases in a linear fashion, but gradually levels off to a frequency of 0.5. D. As physical distance increases, the recombination frequency first increases, but then decreases.
You are interested in developing an inhibitor for the estrogen receptor. You have identified a molecule that is small and hydrophilic. In a test tube, this inhibitor binds tightly to the estrogen receptor, and inhibits the interaction of the receptor with estrogen. Do you think that this molecule will be an effective inhibitor of the estrogen receptor in cells?
A. Yes, because it can prevent estrogen binding. B. Yes, because it is small. C. No, because it is hydrophilic. D. No, because it will need to bind to the DNA-binding domain to act as an inhibitor.
Medicines are often administered in pill form. In many cases, the active ingredient of the pill (the drug) is joined to another substance by ________. This forms a(n) ________, which is stable in the dry environment of a pill bottle but dissociates under
the wet conditions of the digestive system to release the drug to the body. A) ionic bonds; salt B) hydrogen bonds; base C) ionic bonds; acid D) covalent bonds; salt
Property of the plasma membrane that allows some substances to pass, but prohibits the movement of others.
What will be an ideal response?