Which of the following is the most likely explanation for the band pattern seen in lane 6?
A. Protein D is a restriction enzyme and cut the DNA fragment into two DNA fragments.
B. Protein D binding to the CRP-binding site is less tight compared to cAMP-CRP binding.
C. Protein D has a smaller mass than the cAMP-CRP protein.
D. Protein D removed radioactive label from the DNA fragment.
C
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Which of the following processes takes place in the cytoplasm and involves the transfer RNA (tRNA) mediating the sequential addition of amino acids in a specific sequence that is dictated by the codon sequence of the messenger RNA (mRNA) molecule?
a. Transcription b. Initiation c. Elongation d. Termination
What is the role of amylase?
a. converting starches to maltose b. synthesizing nutrients in the body c. buffering the pH of food d. breaking down fatty acids
For roundworms living in the intestine of a
vertebrate, the cuticle most probably serves in what capacity? a. water retention b. nutrient absorption c. protection from digestive enzymes d. excretion of metabolic wastes e. sensory detection
Net primary productivity is the
a. rate of photosynthesis. b. rate of energy flow. c. amount of energy stored in the ecosystem. d. amount of energy utilized by autotrophs. e. amount of energy utilized for growth and reproduction