A mutation in a ribosome binding site in the lac operon would likely result in
A) reduction in the amount of LacZ, LacY, or LacA protein.
B) reduction in the amount of LacZ, LacY, and LacA proteins.
C) complete loss of transcription of the lac operon.
D) a lac mRNA that is shorter than wild-type.
A) reduction in the amount of LacZ, LacY, or LacA protein.
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Your microscope has a resolving power of 0.15 ?m. The specimen that you will be observing has bacterial cocci the size of 0.1 ?m in diameter. Which of the following statements is correct?
A. The cocci will be readily visible and distinct. B. The cocci will appear much smaller than their actual size because of the low resolution. C. The cocci will be fuzzy-looking and blend together. D. The cocci will not be visible.
The rate of a reaction catalyzed by an enzymes usually ________ with temperature; however, at temperatures above the optimum range ________
A) increases; protein denaturation occurs B) increases; the reaction proceeds without the enzyme C) decreases; the reaction proceeds without the enzyme D) increases; the direction of the reaction reverses E) decreases; prosthetic groups are necessary
Selective breeding
What will be an ideal response?
What do stick insects (Phasmatodea) eat?
a. Other insects b. Leaves c. Nothing, their mouth parts are vestigal d. insect eggs and mites