Where does the energy come from to power the formation of GTP?
a. Water
b. ATP
c. NADH
d. Succinyl CoA
Answer: d. Succinyl CoA
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A shared derived characteristic for members of the arthropod subgroup that includes spiders would be the presence of _____
A) chelicerae B) an open circulatory system C) an exoskeleton D) a cuticle E) a cephalothorax
The polytene chromosomes of certain insect larvae
churn out copious amounts of gene products because a. they are acetylated. b. they are methylated. c. they contain numerous side-by-side copies of genes. d. they have multiple promoter sites. e. their histones are only loosely associated with the DNA molecules.
Proteomics is the ________
A) changing of the terminal sequences of proteins to alter their function B) process of defining the complete set of proteins encoded by a genome C) harvesting of proteins from a cell to determine their economic value D) rational design of drugs based on protein structure E) manipulation of amino acid sequences in proteins to alter their function
Cells that use the amino acids selenocysteine and pyrrolysine have
A) two more codons compared to other cells. B) two more tRNAs compared to other cells. C) two more aminoacyl-tRNA synthetases compared to other cells. D) two more tRNAs and aminoacyl-tRNA syntheses compared to other cells. E) inosine at the third position of their tRNA anticodons to accommodate these amino acids.