Of the following steps associated with translation, which does not involve hydrolysis of GTP?
A) aminoacylation of tRNA
B) formation of the initiation complex
C) binding of the aminoacyl tRNA to the codon at the A site
D) translocation of the ribosome
E) release of polypeptide
Answer: A
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The correct flow chart for the release of sex
hormones is
a. hypothalamus ? posterior pituitary ? gonads b. hypothalamus ? anterior pituitary ? gonads c. anterior pituitary ? hypothalamus ? gonads d. posterior pituitary ? hypothalamus ? gonads e. none of these
Nutrients absorbed by the intestines move directly to the liver, which
A) converts the nutrients into monomers. B) converts excess glucose to glycogen. C) manages the amount of glucose that is converted to amylase. D) converts glucose to alcohol.
What type of animal uses Malpighian tubules for excretion?
A. mammals B. birds C. fish D. insects
What is the name of the enzyme that fits new complementary DNA nucleotides into the new strand?
A. DNA telomerase B. DNA replicase C. DNA polymerase D. DNA ligase E. DNA helicase