Which of the following organelles does not receive proteins synthesized on cytoplasmic ribosomes by posttranslational import?
A) lysosome
B) nucleus
C) mitochondria
D) peroxisomes
E) chloroplast
A) lysosome
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Which of the following statements is incorrect regarding DNA and RNA?
A. One of the bases is different. B. DNA is double stranded, and RNA is a single strand. C. They each contain a slightly different sugar molecule. D. All of the above are correct.
Allen's rule states that mammals from colder climates have shorter ears and appendages than individuals of the same species from warmer areas. The related Bergman's rule states that mammal body size varies with latitude, with larger body size in populations located closer to the poles and smaller body size in populations located closer to the equator. What can explain both of these rules?
A. Larger bodies can store proportionally more fat as insulation than smaller bodies. B. Smaller bodies can store proportionally more fat as insulation than larger bodies. C. Heat loss increases as the surface area to volume ratio of the animal increases. D. Larger bodies have a proportionally larger surface area, and heat radiation varies with volume. E. Smaller bodies have a proportionally smaller surface area, and heat radiation increases with surface area.
An ovarian follicle is indicated by
a. A. b. B. c. C. d. D. e. E.
Which fossil fuels provides the raw materials to produce a variety of plastic goods?
A. Coal B. Natural gas C. Biomass D. Gasoline E. Oil (petroleum)