Hello I really need help with these BIO-1 questions. Could you guys please answe

Question

Hello I really need help with these BIO-1 questions. Could you guys please answer all of the multiple choice questions. I know it seems like a lot but i would highly appreciate it becuase i really need help on them. Thank you guys! I truly appreciate it.

16. The central dogma of life/molecular biolog y regarding the flow o information is: A. DNA protein RNA B. DNA DNA RNA C. DNA RNA Protein D. Protein DNA RNA E. Amino-acid protein DNA 17. Which one of the following statements is correct A. DNA polymerase does not need a primer to begin DNA synthesis B. RNA polymerase does not need a primer to begin RNA synthesis C. Both DNA polymerase and RNA polymerase need primers to begin DNA or RNA synthesis respectively D. None of the above are correct 18. The start codon is a signal for beginning: A. DNA replication B. Transcription C. Translation D. mitosis E. meiosis ATP molecules are ATP molecules are 19. During glycolysis of one molecule of glucose, consumed during the investment phase and generated by substrate level phosphorylation during the harvesting or payoff phase to give a net yield of two ATP molecules. A. 3, 5 B. 4,6 C. 2,4 D. 0,2 20. Mitosis results in the production of A. two daughter cells that are identical to the parent cell B. four daughter cells that are identical to parent cells C. four daughter cells each of which have half the number of chromosomes present in the parent cells D. three daughter cells that are identical to the parent cells E. none of the above 21. The two strands in a molecule of DNA are: A. Identical to one another B. Complementary to one another C. Partially complementary and partially identical D. None of the above is correct

Explanation / Answer

16.C.DNA->RNA->Protein

Central dogma describes the two-step process, transcription and translation, by which the information in DNA (genes) flows into proteins.

17.(B)

DNA polymerases require a primer with a free 3-hydroxyl group while RNA polymerase does not need a primer.

18.(C)

The start codon is the first codon of a messenger RNA and the stop codon is the last codon which guide the protein synthesis (translation)

19.(C)

Glycolysis uses 2 ATP but forms 4 ATP; a net gain of 2 ATP.

20.(A)

Mitosis results in two identical daughter cells while Meiosis produces 4 haploid (mostly non identical) cells.

21.(B)

The two strands of DNA are complementary as the sequence of bases in one strand automatically determines that of the other.

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