Which of the following is not true of nucleic acid and protein structure?
A. Nucleotides are connected through phosphodiester bonds.
B. Both proteins and nucleic acids are unbranched polymers.
C. When several nucleic acids are joined together, a polypeptide is formed.
D. The chemical composition of a nucleic acid helps determine its structure.
E. The chemical composition of a protein helps determine its structure.
C
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A key difference between classification methods and identification methods is that classification methods are designed to
a. examine an organism's staining characteristics b. determine the oxygen requirements of an organism c. determine evolutionary relationships of organisms d. determine if an organism is resistant to antibiotics e. determine an organism’s pathogenicity
Animals exchange heat with their environment through
A. radiation. B. conduction. C. convection. D. evaporation. E. All of the choices for this question are correct.
Which of the following is not true about archaeal ribosomes?
A. They have similar antibiotic sensitivities to those of bacteria. B. They are 70S like bacterial ribosomes. C. They may possess ribosome binding sites homologous to bacterial Shine-Dalgarno sequences. D. All of these are true about archaeal ribosomes.
Imprinting is a
a. response to a stimulus. b. learned behavior that occurs during a critical time period. c. fixed action pattern. d. decline in the level of a response to a nonthreatening stimulus. e. type of learning that involves solving novel problems.