The hosts for the causative agent of cholera between
El Niño Southern Oscillations are
a. humans.
b. algae.
c. copepods.
d. shellfish.
e. marine worms.
Answer: c
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A plant's response to an external stimulus involves receptors. A receptor that responds to light normally contains
A. an end product of a metabolic pathway. B. a pigment component. C. a transduction pathway. D. a series of relay proteins.
Which of the following is not one of the phases of mitosis?
a. Prophase b. S phase c. Metaphase d. Anaphase
pH 8 and above solution is.
a. acidic b. basic c. neutral
Why are conifers and cycads considered gymnosperms?
A. The female gametophyte is not completely enclosed in sporophyte tissue at the time of pollination. B. The ovule forms the seed. C. The fruit is not fleshy. D. The pollen is wind dispersed. E. Pollination and fertilization occur at different times.