Which sequences of eukaryotic genes code for proteins?
A) exons
B) introns
C) invariant
D) the spliceosome
Ans: A) exons
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Birds and fish contain high amounts of yolk in their eggs. What can be said about cell cleavage during embryonic development in these animals?
A. It is meroblastic. B. It is holoblastic. C. It is complete. D. The blastula that forms involved cleavage through the entire egg. E. It is impossible for bird and fish eggs to undergo cleavage during development.
Which of the following correctly describes the main difference between type 1 and type 2 diabetes?
a. One causes hyperglycemia, while the other causes hypoglycemia. b. One demonstrates protein breakdown, while the other demonstrates protein synthesis. c. One leads to blindness, while the other leads to kidney disorder. d. One has insulin hypersecretion, while the other has insulin hyposecretion. e. One has insulin deficiency, while the other has insulin resistance.
What causes vertigo? What causes motion sickness?
What will be an ideal response?
A respiratory system is needed if an organism is too __________ to rely on the diffusion of gases
through the body's tissues. a. small b. long c. thick d. thin e. round