In DNA replication, what type of molecule is a
primer?
a. nucleic acid
b. lipid
c. protein
d. carbohydrate
e. inorganic
A
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Respiratory surfaces in all vertebrates have
A. moist epithelia. B. large surface areas. C. thin epithelia. D. a very high degree of vascularization. E. All of the answers for this question are correct.
At rest, each cardiac cycle takes 0.8 seconds and during half of that time (0.4 seconds), both atria and ventricles are relaxed.
a. true b. false
Which of the following is not an example of a detritivore?
A. arthropods B. worms C. fungi D. vultures
Which of the following statements regarding photosynthesis is false?
A) Photosynthesis consumes CO2; respiration consumes O2. B) The principal electron carrier in photosynthesis is NADPH; the principal electron carrier in respiration is NADH. C) Photosynthesis produces O2; respiration produces CO2. D) Photosynthesis is ultimately powered by light energy and respiration by the chemical energy of fuel molecules. E) ATP is not produced during photosynthesis, but only during respiration.