What statement about biochemical pathways is correct?
A) All enzymes in the pathway catalyze the same reaction.
B) If an enzyme in a pathway is inactive, adding excessive amounts of its substrate will restore the normal phenotype.
C) If an enzyme in a pathway is inactive, adding excessive amounts of its product will restore the normal phenotype.
D) If the enzyme that catalyzes the final step in a pathway is inactive, all the other enzymes will be inactivated as well.
E) If the first enzyme in a pathway is inactivated, adding the final product will not restore the normal phenotype.
C) If an enzyme in a pathway is inactive, adding excessive amounts of its product will restore the normal phenotype.
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A relationship between two organisms in which both members benefit is said to be
(a) parasitic. (b) saprotrophic. (c) mutualistic. (d) heterotrophic.
The splicing regulatory protein (SR) identifies exons to be included in mRNA. How might SR proteins regulate alternative splicing?
A) There are alternative binding regions for these proteins within each exon. B) There are alternative SR proteins in different tissues at different stages of development. C) The SR proteins lose the ability to bind to exon splice suppressors. D) The SR proteins recruit the splicing small RNAs (U1, U2,…) or unusual ones. E) The spliceosome complex can bind only to regions with bound SR proteins.
Which of the following scientists argued that variation among individuals allows evolution to occur?
A) Aristotle B) Lamarck C) Linnaeus D) Wallace
The study of matching different sets of DNA based on the number of short tandem repeats is called ________
Fill in the blank(s) with correct word