Each angiosperm pollen grain contains how many sperm cells?
a. millions
b. four
c. one
d. hundreds
e. two
Ans: e. two
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To survive, an animal needs all its sensory receptors working, and even then, it cannot fully sense the external environment. What extra sensory receptors do you think would be advantageous to the survival of humans in this modern world?
What will be an ideal response?
During the Olestra experiment what was the independent variable? a. The group that received Olestra chips
b. The group that became ill. c. The presence or absence of Olestra. d. How ill the individuals became. e. The group that received plain chips.
The cecum, rectum, and anal canal make up what?
A) appendix B) large intestine C) anus D) small intestine
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 is small. B. No, because it will need to bind to the DNA-binding domain to act as an inhibitor. C. No, because it is hydrophilic. D. Yes, because it can prevent estrogen binding.