Figure 2.5A
Based on its outer shell, the atom in the accompanying figure would be characterized as ____.
A. very stable
B. somewhat stable
C. somewhat unstable
D. very unstable
E. radioactive
Answer: A
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Which motor protein would you find in a flagellum?
A. myosin B. dynein C. kinesin D. Answers a and b are both correct.
Which one of the following statements about regulation of translation is incorrect?
A. Translation initiation complexes recognize and bind to the 5' cap. B. The translation initiation complex scans for an AUG codon near the 5' cap. C. The 5'UTR sequence affects the efficiency of translation initiation. D. Regulation of translation does not depend on sequences in the 3'UTR or the poly(A) tail. E. One of the key variables for influencing efficient translation is the sequence of nucleotides flanking the AUG codon.
Some organisms are not able to live in an environment where there is oxygen; these types of organisms are called
obligate anaerobes. Which explanation is most plausible for how they survive without oxygen?
a. They are able to survive using less energy than aerobes. b. All of their ATP is imported into the cell from an external source. c. Sulfur is used instead of oxygen because it is chemically similar. d. These organisms use photosynthesis to produce energy. e. Their mitochondria are damaged, and consequently they are short-lived.
A species has 6 chromosome pairs in each diploid cell. How many genetically unique gametes could be produced from sexual reproduction in this species, accounting only for independent assortment?
A. 64 B. 8 C. 36 D. 9 E. 16