Why is carbon so important in biology?
A) It is a common element on Earth.
B) It has very little electronegativity, making it a good electron donor.
C) It bonds to only a few other elements.
D) It can form a variety of carbon skeletons and host functional groups.
D
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Broadcast spawning refers to
a. having multiple reproductive partners. b. releasing sperm into surrounding waters. c. releasing eggs into surrounding waters. d. internal fertilization. e. both b and c
The Human Genome Project has the potential to ________
A) lead to treatments for inherited diseases B) lead to treatments for contagious diseases C) increase our understanding of the historical relationships among species D) play a role in all of the choices listed here
What does the interaction between arrestin and clathrin promote?
a) the uptake of phosphorylated GPCRs into the cell by endocytosis b) the uptake of phosphorylated GPCRs into the cell by endocytosis c) the secretion of GPCRs d) the uptake of free hormone e) the expulsion of phosphorylated GPCRs from the cell by exocytosis
In eukaryotic cells, transcription occurs
A. on the surface of the nuclear membrane. B. on ribosomes. C. on spliceosomes. D. inside the nucleus. E. on the surface of the plasma membrane.