Which enzyme inserts nucleotides at the V-J junction to add further diversity?
A. DNA polymerase
B. Terminal deoxynucleotidyl transferase
C. RAG enzymes
D. Reverse transcriptase
Answer: B
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Which organisms are considered most primitive based upon the structure of their limbs?
a. bats b. reptiles c. porpoises d. penguins e. birds
In positive feedback homeostatic mechanisms
a. the response reverses the change. b. the response intensifies the change. c. the response occurs before the change. d. none of the above answers occurs.
Animals learn about their surroundings
A. instinctively. B. by actively exploring their surroundings. C. from communication with other animals. D. None of these answers is correct.
It is FALSE that enzymes
A. are catalysts. B. are proteins. C. lower the activation energy of a reaction. D. are used up in a reaction.