The plant hormones ____ appear to regulate the expression of genes associated with a plant's growth responses to
light.
a. salicylic acid
b. brassinosteroids
c. gibberellins
d. jasmonates
e. oligosaccharins
ANSWER: b
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The term oxidation is derived from the name of the element oxygen. This is reasonable, because oxygen
A. attracts electrons very strongly. B. can be oxidized by accepting electrons. C. contains more electrons than are needed. D. passes electrons to many other types of molecules.
The five steps listed below are part of the cross-bridge cycle
1. The myosin head binds to actin. 2. The myosin head is cocked back through the hydrolysis of ATP. 3. The actin filament slides relative to the myosin filament. 4. The myosin head binds ATP. 5. The myosin head detaches from the actin. Which of the following lists the steps in the correct order? A. 4, 5, 2, 1, 3 B. 1, 4, 2, 3, 5 C. 1, 2, 3, 4, 5 D. 5, 4, 1, 2, 3 E. 2, 1, 3, 5, 4
In the lac operon, what acts as the inducer?
A) glucose B) permease C) allolactose D) ?-galactosidase E) transacetylase
Organisms made up of one cell are said to be ________
Fill in the blank(s) with correct word