A Gram stain distinguishes bacteria based on a difference in their __________.
a. cell walls
b. flagella
c. fimbriae
d. plasmids
e. capsules
Answer: a. cell walls
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Bacterial chromosomes, unlike eukaryotic chromosomes, often consist of a single replicon.
Answer the following statement true (T) or false (F)
Commercial fertilizer labels prominently display three numbers, which indicate the content of three elements needed by most plants as macronutrients. These elements in number sequence are
A. zinc, magnesium, and potassium. B. carbon, sulfur, and nitrogen. C. nitrogen, zinc, and copper. D. nitrogen, phosphorus, and potassium. E. copper, nitrogen, and phosphorus.
Insulin stimulates an increase in number of glucose carrier proteins at a cell membrane's surface. What effect will insulin have on cell function? Choose all that apply.
A. Lack of membrane receptors for insulin will decrease amount of glucose taken in. B. Low insulin levels will decrease the number of available carrier proteins. C. An increase in insulin, which will increase the diffusion rate. D. ATP amounts needed for this transport will increase.
A gene that influences several traits is termed pleiotropic
Indicate whether the statement is true or false