Which of the following is NOT a characteristic of alveoli?
a. small overall surface area
b. thin basement membrane
c. surfactant production
d. small diameter
e. reduced surface tension to maintain opening
ANSWER: a
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A. Interphase B. Prophase C. Metaphase D. Anaphase E. Telophase
Long coding RNAs (lnc RNAs) are characterized by:
a. the presence of introns. b. the lack of a polyA tail. c. their roles in regulating transcription. d. being less than 100 bases in length. e. binding to zinc finger transcription factors.
In muscle cells, fermentation produces not alcohol but
a. ATP. b. NADH. c. pyruvate. d. kinetic energy. e. lactic acid.
Which cells' direct involvement are required for cell-mediated immunity?
A. bacterial cells B. T-cells C. viral components D. B-cells E. neutrophils