CH_12 - CH 12 Multiple Choice 2. Within a group of mutants...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CH 12 Multiple Choice 2. Within a group of mutants with the same growth requirement (i.e., the same overt phenotype), mapping studies determined that individual mutations were on different chromosomes. This indicates that a. the same gene governs all the steps in a particular biological pathway. b. different genes can govern different individual steps in the same biological pathway. c. different genes govern the same step in a particular biological pathway. d. all biological pathways are governed by different genes. e. genes do not govern steps in biological pathways. Answer: b 4. The rates of DNA mutations are _______ in different organisms. a. the same b. constant c. different d. dependent on health e. dependent on temperature Answer: c 5. Genes code for a. enzymes. b. polypeptides. c. RNA. d. All of the above e. None of the above Answer: d 7. How does RNA differ from DNA? a. RNA contains uracil instead of thymine and it is usually single-stranded. b. RNA contains uracil instead of thymine and it is usually double-stranded. c. RNA contains thymine instead of uracil and it is usually single-stranded. d. RNA contains uracil instead of cytosine. e. None of the above Answer: a 8. Which of the following statements about the flow of genetic information is true? a. Proteins encode information that is used to produce other proteins of the same amino acid sequence. b. RNA encodes information that is translated into DNA, and DNA encodes information that is translated into proteins. c. Proteins encode information that can be translated into RNA, and RNA encodes information that can be transcribed into DNA.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
d. DNA encodes information that is translated into RNA, and RNA encodes information that is translated into proteins. e. None of the above Answer: d 9. RNA polymerase uses the _______ DNA template to synthesize a _______ mRNA. a. 5′ to 3′; 5′ to 3′ b. 3′ to 5′; 3′ to 5′ c. 5′ to 3′; 3′ to 5′ d. 3′ to 5′; 5′ to 3′ e. Examples of all of the above have been found. Answer: d 10. Which of the following molecules transfers information from the nucleus to the cytoplasm? a. DNA
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

CH_12 - CH 12 Multiple Choice 2. Within a group of mutants...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online