Why is it not advisable to take antibacterial medicines when you have a cold or the flu?
What will be an ideal response?
The common cold and influenza are caused by viruses. Antibacterial medicines are naturally designed to inhibit or kill bacteria, so they are ineffective when used against viruses.
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RNAi probably evolved as a mechanism to:
A. aid molecular biologists to experimentally knockdown gene expression. B. catalyze RNA-dependent DNA synthesis. C. suppress infection by RNA viruses. D. generate cell-specificity for certain mRNAs.
Suppose the amount of water that has evaporated from the ocean has increased per unit of time. What can be expected to happen at points B and E in the accompanying diagram?
What will be an ideal response?
Cloning mammals has proven to be:
a. impossible. b. easy and straightforward. c. not technically feasible at the present time. d. a technique that produces many similar-looking, deformed progeny. e. a process with a low success rate and a high incidence of genetic defects. What will be an ideal response?
Which fungus commonly causes cutaneous ulcers and can cause extensive abscess formation and tissue destruction?
a) Pneumocystis jirovecii b) Histoplasma capsulatum c) Coccidioides immitis d) Blastomyces dermatitidis