In the ABC model of flower development in
Arabidopsis thaliana, petals form when gene(s)
__________ is(are) switched on.
a. A
b. A and B
c. B and C
d. C
e. A and B and C
Answer: b
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When is the endometrium thickest in the female reproductive cycle?
a. in the secretory phase b. shortly before ovulation c. during ovulation d. during the proliferative phase
What is the best way to describe our current understanding of the one-gene/one-polypeptide hypothesis?
A. It is oversimplified, especially in eukaryotes. B. It continues to be an accurate description of how genes work. C. It was true for fungi like Neurospora, but not for other species. D. It has been replaced by the more accurate "one-gene/one-enzyme" hypothesis.
Which of the following would be composed of smooth muscle?
A) Ventricles of the heart B) Muscles of the uterus C) Muscles that allow you to cross your eyes D) Quadriceps (leg muscle)
Which process uses special proteins on the surface of the membrane to identify specific molecules for transport into the cell?
a. phagocytosis b. pinocytosis c. receptor-mediated endocytosis d. exocytosis