In the comparison of a DNA molecule to a twisted ladder, the upright sides of the ladder are
A) nitrogenous bases linked to phosphate.
B) nitrogenous bases linked together.
C) deoxyribose linked to phosphate.
D) deoxyribose linked to sulfate.
E) hydrogen bonds between bases.
C
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Proteins can be broken down for energy. They are typically broken down into amino acids, which then enter cellular respiration via:
A. glycolysis or ethanol fermentation. B. lactic acid fermentation or the citric acid cycle. C. glycolysis or the citric acid cycle. D. electron transport/oxidative phosphorylation.
The home range of an animal is always defended
Indicate whether the statement is true or false
Which feature is an evolutionary novelty of hexapods?
A. Antennae B. Mandibles C. Wings D. Jointed appendages E. Chitinous exoskeletons
Covers ends of bones at joints, supports the nose and airway passages.
What will be an ideal response?