Oocytes store mRNAs with _______ and activate them by _______.
a. no cap; addition of a cap
b. long poly-A tails; shortening the tails
c. short poly-A tails; lengthening the tails
d. bound siRNA; removing the siRNA
Ans: c. short poly-A tails; lengthening the tails
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Which of the following is NOT true of adult cloning?
a. It involves differentiated cells. b. It occurs with some frequency in nature. c. It involves rewinding the developmental clock. d. It involves an egg cell that has had its nucleus removed. e. It may involve nuclear transfer.
A charged tRNA with the anticodon 5' AUG 3' would carry which amino acid?
a. Phe b. His c. Met d. Val
The ____ cells produce pepsinogen in the stomach
a. brush border cells b. chief cells c. choanocytes d. parietal cells e. villi
The ________ detect movement of the head
A) semicircular canals of the inner ear B) bones in the middle ear C) pinna and auditory canal of the outer ear D) oval and round windows of the inner ear E) olfactory receptors in the nasal cavity