The ?-subunit of a heterotrimeric G protein is active when bound to ________.
Fill in the blank(s) with the appropriate word(s).
GTP
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The antiparallel arrangement within DNA molecules refers to
A. a purine always bonding to a pyrimidine. B. each base bonding at the 1' position of the sugar. C. one helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction. D. an original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule.
Which organic molecule functions as a subunit of DNA and RNA?
a. Fatty acids b. Monosaccharides c. Nucleotides d. Amino acids e. Polypeptides
Being a heterotroph means ________.
A. making your own food from oxygen B. obtaining your food by photosynthesis C. making your own food from the sun D. obtaining your food by eating other organisms
What process occurs when complex molecules are synthesized from simpler substances?
a. anabolism b. catabolism c. metabolism d. condensation e. phosphorylation