Replication of DNA is
A. semidispersive.
B. conservative.
C. redundant.
D. semiconservative.
E. dispersive.
Answer: D
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Match the following items with the correct phrases.
_______1. A protein that plays a role in DNA replication. _______2. The end product of transcription. _______3. A protein that plays a role in transcription. _______4. The location of codons. _______5. The location of anticodons. _______6. An integral part of ribosomes, whether or not they are participating in protein synthesis. _______7. Produced in the nucleolus of eucaryotic cells. _______8. The molecule responsible for “activating” amino acids, thus enabling them to be added to the growing polypeptide chain. a. DNA polymerase b. RNA polymerase c. mRNA d. rRNA e. tRNA
Which type of microscopy transforms the subtle variations in cell density into differences in light intensity, allowing for increased internal detail without staining?
A. Confocal B. Bright-field C. Phase-contrast D. Fluorescence E. Electron
Which of the following characterizes the amphibian’s primary food source as adults?
a. herbivory b. omnivory c. carnivory d. None of these choices is correct.
Water is capable of rising to the tops of the tallest trees due to all of the following except:a
the hydrogen bonds among water molecules. b. the cohesiveness of water molecules. c. the adhesion of water to the walls of xylem cells. d. the evaporative pull of transpiration. e. root pressure