Which of the following is (are) used by microorganisms to become resistant to a particular drug?
A. An alternate metabolic pathway that bypasses the drug-sensitive step
B. Exclusion of the drug from the cell
C. Enzymatic inactivation of the drug
D. All of the choices are correct.
Answer: D
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The first single-gene disorder for which the mechanism of mutation was understood at a molecular level was
A) cystic fibrosis. B) hemophilia. C) sickle cell disease. D) diabetes mellitus.
Cholesterol is essential for keeping cell membranes from thickening
Indicate whether the statement is true or false.
Photosynthesis takes place in the ____
a. epidermis b. vascular bundles c. cuticle d. cortex e. mesophyll tissue
Rosalind Franklin did not share in the Nobel Prize for the discovery of the structure of DNA because _____
a. she was a woman b. her contributions were minimal c. she was not liked by James Watson d. her ideas were stolen by Maurice Wilkins e. she died of cancer before the award was given