Which of the following substances is NOT filtered from the bloodstream?
a. water
b. plasma protein
c. urea
d. glucose
e. sodium
B
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The inheritance of sex-influenced traits can be dominant in one sex but recessive in the other
a. True b. False Indicate whether the statement is true or false
Ribosomes are composed of
a. proteins only. b. proteins and DNA. c. proteins and RNA. d. glycolipids and DNA. e. glycolipids and RNA.
How does the early development of the mouse differ from that of Caenorhabditis?
a. Embryonic mouse cells commit to their ultimate fate earlier than do the cells of Caenorhabditis. b. Early development of a mouse is regulative, while early development of Caenorhabditis is not. c. Mouse cells require higher concentrations of nutrients than do the cells of Caenorhabditis. d. Embryonic mouse cells differentiate much later than the cells of Caenorhabditis. e. Embryonic development in the mouse is controlled by transcription factors, while Caenorhabditis is not.
If a virus with radioactive DNA infects a bacterium, which part will then be radioactive?
A) the viral protein coat B) the bacterial protein coat C) the bacterial RNA D) the viral DNA inside the bacterium