Which type(s) of RNA is/are translated into proteins?
A) mRNA
B) rRNA
C) tRNA
D) mRNA and rRNA
E) mRNA, rRNA, and tRNA
A
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As a pond starts to dry out at the end of the rainy spring season, a researcher notices that toads
burrow into the soil where they can hibernate for up to nine months. What is the benefit of hibernation?
a. reduced metabolic rate that ensures survival b. increased body temperature that ensures survival c. a period of time during which the animal completes sexual maturity d. all of these
Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as a recessive allele of an X-linked gene in humans. A woman whose father suffered from G6PD marries a normal man
(a) What proportion of their sons is expected to be G6PD? (b) If the husband was not normal but was G6PD deficient, would you change your answer in part (a)? A) (a) 100%; (b) no B) (a) 1/2; (b) yes C) (a) 1/2; (b) no D) (a) zero; (b) no
Which of the following statements is TRUE of both aerobic and anaerobic respiration?
A. Both produce NADH as high-energy intermediates. B. Both produce either lactic acid or ethanol as a biproduct. C. Both use glycolysis to oxidize glucose to pyruvate. D. Both produce NADH as high-energy intermediates and both produce either lactic acid or ethanol as a bioproduct. E. Both use glycolysis to oxidize glucose to pyruvate and both produce NADH as high-energy intermediates.
A patient has fever, difficulty breathing, chest pains, fluid in the alveoli, and a positive tuberculin skin test. Gram-positive cocci are isolated from the sputum. The patient most likely has
A) tuberculosis. B) influenza. C) pneumococcal pneumonia. D) mycoplasmal pneumonia. E) the common cold.