Freshwater fish are ________ with respect to osmoregulation.
A. hypotonic regulators
B. hypertonic conformers
C. hypertonic regulators
D. hypotonic conformers
E. isotonic conformers
Answer: C
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CD4 cells are also known as
A. T helper cells. B. natural killer cells. C. T cytotoxic cells. D. macrophages. E. neutrophils.
The effect of directional growth shown in the
above figure is known to be caused by a. thigmotropism. b. gravitropism. c. abscisic acid. d. salicylic acid. e. all of these.
Angiosperms produce pollen in structures called ________
Fill in the blank(s) with correct word
Which of the following drugs is/are produced by genetic engineering and approved for human use?
A. insulin B. Human growth hormone C. tissue plasminogen activator D. Factor VIII E. All of these choices are correct.