What number is the Cell membrane?
What will be an ideal response?
9
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Adaptive radiation is
a. the basis of radiometric dating. b. development of similar body form in unrelated organisms. c. formation of beneficial alleles through exposure to radiation. d. origin of many species from a single common ancestor. e. spread of successful alleles from one population to another.
Which statement is NOT true about stomata?
A. Guard cells take up potassium ions and water enters the guard cells. B. Stomata open and close on a daily basis, even if kept in the dark, on a circadian rhythm. C. There are two guard cells around each stomata. D. As guard cells become turgid, the stomata open. E. The blue light component of sunlight is a signal that can cause stomata to close.
The cooperative activity of drugs such as beta-lactam antibiotics and clavulanic acid, a ?-lactamase inhibitor, is known as
A) cross resistance. B) antimetabolism. C) synergism. D) selective toxicity. E) chemotherapy.
A shuttle vector is a plasmid that is used to move pieces of DNA among organisms, such as bacterial, fungal, and plant cells
Indicate whether the statement is true or false