Why are polar bodies formed in oogenesis?
a. to produce 4 gametes each with adequate amounts of nutrients.
b. to produce one functional gamete with maximal nutrient content.
c. to dispose of extra chromosomes.
d. both (a) and (b) above.
e. both (a) and (c) above.
E
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Riboswitches are folded RNAs that act as switches to turn protein synthesis on or off in response to ________
A) specific codes from the DNA B) changes in the environment C) the presence or absence of ubiquitins D) specific tRNAs
Which structures pull on the tendinous cords (chordae tendinae) and hold them taut during ventricular contraction?
A. Pectinate muscles B. Trabeculae carneae C. Fibers in the bundle of His D. Coronary ropes E. Papillary muscles
Unlike ____________________ hormones, steroid hormones are not stored after their formation
Fill in the blank(s) with correct word
Which ventricle of the brain is found in the diencephalon?
A) third ventricle B) first ventricle C) second ventricle D) fourth ventricle