In their actions, muscles would be most like
A. hammers
B. ropes
C. screws
D. levers
Answer : B. ropes
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During DNA replication, all of the following proteins are important for separating the DNA strands and allowing movement of the replication fork EXCEPT
A. DNA polymerase. B. helicase. C. topoisomerase. D. single-stranded binding proteins. E. both helicase and topoisomerase.
Which of the following statements about DNA replication is INCORRECT?
A. It begins at multiple origins of replication sites along eukaryotic chromosomes. B. It proceeds with the addition of new nucleotides to the 3? end of a growing DNA strand. C. It is powered by the hydrolysis of ATP. D. Each strand within the DNA double helix is used as a template for synthesis of a new strand. E. It requires that both strands of the double helix be separated from each other
Your cells most readily obtain energy from
A. C6H12O6. B. Glyceraldehyde-3-phosphate. C. ATP. D. NADH2.
Which statement best describes extracellular digestion?
a. Extracellular digestion is seen in sponges. b. Extracellular digestion occurs in most animals. c. Extracellular digestion must involve choanocytes. d. Extracellular digestion may take place in a tube contained inside the body.