The type of fish represented by the most living species on earth today are the
A. bony fishes.
B. coelacanths.
C. sharks.
D. rays and skates.
Answer: A
Biology & Microbiology
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The semi-fluid matrix that surrounds organelles in a cell is called the:
A. stroma. B. nucleoplasm. C. ribosome. D. cytoplasm.
Biology & Microbiology
Gated channels are NOT utilized by the cell ____
a. to transport water b. to stimulate muscle contraction c. to generate nerve signals d. for facilitated diffusion e. to transport sodium
Biology & Microbiology
Disulfide bonds contribute to the ___________ structure of insulin
a. primary and secondary b. secondary and tertiary c. tertiary and quaternary d. secondary, tertiary, and quaternary
Biology & Microbiology
The individuality of an organism is determined by the the organism's
a. amino acids b. nitrogen bases c. DNA base sequence d. order of ribosomes
Biology & Microbiology