Variations in pre-mRNA processing, such as in ____, can determine which ____ are made in cells
a. alternative splicing; proteins
b. exon shuffling; proteins
c. alternative splicing; transcripts
d. histone modifications; transcripts
e. genomic imprinting; transcripts
ANSWER: a
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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.
When an infection occurs by the same
pathogen, the immune response is more rapid the next time around thanks to
a. effector cells. b. memory cells. c. naive T cells. d. neutrophils. e. eosinophils
In open water, the undissolved remains of dead organisms and other organic material that drifts toward the bottom is called ________ organic matter
Fill in the blank(s) with correct word
A situation in which there are more than two alternative forms of a given gene would be called ________
A) multiple alleles B) codominance C) hemizygosity D) incomplete dominance E) alternation of generations