Posttranscriptional processing is the modification of
A. exons to form introns.
B. mRNA to form tRNA.
C. pre-mRNA to form functional mRNA.
D. DNA.
E. proteins to form pro-proteins.
Answer: C
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Each lung consists of a number of segments called
A. systemic segments. B. alveolar segments. C. pleural segments. D. mesothelial segments. E. bronchopulmonary segments.
What structure carries urine from the renal pelvis to the urinary bladder?
A. Ureters B. Urethra C. Both of these answers are correct. D. None of these are correct.
What is the GFR × plasma concentration equal to?
A) filtered load B) filtration fraction C) renal blood flow D) excretion rate E) clearance
Gonadotropin-releasing hormone is secreted by which of the following?
A. The ovaries B. The testes C. The hypothalamus D. The adrenal gland E. The anterior pituitary