The beating of cilia and flagella occurs by means of _______-based _______.
a. dynein; microtubule sliding
b. kinesin; microtubule sliding
c. myosin; microfilament sliding
d. tubulin; microtubule contraction
e. dynein; microtubule contraction
Ans: a. dynein; microtubule sliding
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Refer to the metabolic pathway illustrated above. If A, B, and C are all required for growth, a strain mutant for the gene-encoding enzyme B would be able to grow on medium supplemented with _____
A) nutrient A only B) nutrient B only C) nutrient C only D) nutrients A and C
The digestive system is concerned with
a. blood circulation. b. digestion and the absorption of nutrients. c. reproduction. d. excretion of urine.
A recombinant cell
1)is a cell that receives DNA from an outside source and incorporates it into its own. 2).donates DNA into a new cell. 3).is the result of a cell dividing.
Who discovered the first antimicrobial widely available to the general public?
A. Domagk B. Ehrlich C. Fleming D. Waksman E. Ehrlich and Waksman