A cell with membrane-bound proteins that selectively bind a specific hormone is called that hormone's _____
A) secretory cell
B) endocrine cell
C) target cell
D) regulatory cell
C
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True or False: plants that possess high levels of xanthophylls are better suited to growth in bright sunlight
A. true B. false
To use a backcross mating strategy for QTL mapping
A. two inbred parental strains that differ in a quantitative trait are crossed are mated B. the F1 offspring are crossed with each other. C. the F2 offspring must contain chromosomes that are recombinant betweeen the markers and the genes involved in the trait D. each parent should contain the same alleles at each QTL.
Long-day plants flower only when hours of darkness are ________
a. equal to hours of light b. decreasing c. less than a critical value for the species d. greater than a critical value for the species
Chitin is a polysaccharide with __________ atoms
attached to the glucose backbone. a. magnesium b. phosphorus c. potassium d. nitrogen e. sulfur