Describe the various effects of auxins in plants
What will be an ideal response?
ANSWER: Auxins are involved in a variety of plant growth responses. The elongation of stems is
promoted by auxins, as is the growth of stems so that they bend toward light. Auxins also
promote fruit development and inhibit leaf abscission. Auxins also promote dormancy in
lateral buds. In the roots, auxin promotes lateral growth. Auxin also is involved in
orientation of growth with respect to gravity in both shoots and roots.
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Which of the following is the best evidence for the lock and key hypothesis of enzyme action?
A. All isolated enzymes have been identified as proteins. B. Enzymes determine the direction of a reaction. C. Enzymes are found in living organisms and speed up certain reactions. D. Compound similar in structure to the substrate inhibits the reaction
Which of the following is considered an important function of the skin?
A. Hold muscle to bone B. Manufacture blood cells C. Produce antibodies D. Control body temperature
E. coli 0157:H7
A. is Gram-positive. B. is a normal constituent of the intestinal tract. C. does not ferment sorbitol. D. produces a toxin. E. does not ferment sorbitol AND produces a toxin.
The process of ___________ takes place when we retain and use past memories.
Fill in the blank(s) with the appropriate word(s)