What happens if an insect is sprayed with a common insecticide that destroys the ability of acetylcholinesterase to recycle acetylcholine?
A. The lack of recycled acetylcholine brings cell metabolism to a halt.
B. This prevents the synapse from restoring its ability to "reset" itself for the next impulse.
C. The insect loses control of body functions as nerve impulses flow continuously.
D. All of the above are correct.
E. The synapse is prevented from restoring its ability to "reset" itself for the next impulse and the insect loses control of body functions as nerve impulses flow continuously.
Answer: E
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When a cell has two complete sets of chromosomes, it is:
a. haploid b. duplicated c. diploid d. triploid e. complete
If a gene contains a guanine nucleotide, the transcribed messenger RNA would have
A. adenine. B. uracil. C. cytosine. D. guanine.
Koch's postulates were used to demonstrate the relationship between
A) HIV and AIDS. B) Mycobacterium leprae and leprosy. C) liver flukes and liver cancer. D) Haemophilus influenzae and Hib meningitis. E) Haemophilus influenzae and the flu.
RFLPs can be used to identify point mutations through which of the following mechanisms?
A) The mutation can be silent in the coding for protein resulting in a different amino acid being inserted. B) The mutation can occur in a restriction site, causing a change in the cutting pattern for restriction enzymes. C) The mutation can occur outside of a restriction site causing a change in the cutting pattern for restriction enzymes. D) The mutation can occur causing a shortening of the mRNA that is then compared to wild type.