This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 16 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The sugar molecule in a nucleotide is A) Pentose. B) Hexose. C) Tetrose. D) Triose. Show Answer Correct Answer: A) Pentose. 2. Which molecule brings the amino acid to the ribosome? A) DNA. B) MRNA. C) TRNA. D) RRNA. Show Answer Correct Answer: C) TRNA. 3. Genes for medically important proteins can be cloned and inserted into bacteria, as shown in the diagram below. Why can bacteria recognize a human gene and then produce a human protein? A) DNA replication in bacteria and humans is the same. B) Bacterial cells contain the same organelles as human cells. C) The basic components of DNA are the same in humans and bacteria. D) Bacterial cells contain the same organelles as chromosomes. Show Answer Correct Answer: C) The basic components of DNA are the same in humans and bacteria. 4. In DNA, A bonds to T and G bonds to C. This is called A) Complementary base pairing. B) Polymerase chain reaction. C) Recombinant frequencies. D) Binary fission. Show Answer Correct Answer: A) Complementary base pairing. 5. ..... is to transcription as ..... is to translation. A) MRNA / Amino Acid Chain. B) Amino Acid Chain / mRNA. C) Ribosome / Nucleus. D) MRNA / tRNA. Show Answer Correct Answer: A) MRNA / Amino Acid Chain. 6. Jessica does not usually exercise, but decides to begin a moderate exercise program. Which is most likely to occur in Jessica's body? A) Digestion will slow down. B) Glucose production will decrease. C) Fat and calories will be burned more rapidly. D) Additional fat reserves will be created to store excess energy. Show Answer Correct Answer: C) Fat and calories will be burned more rapidly. 7. Which of the following best explains why enzymes are necessary for many cellular reactions? A) Enzymes supply the oxygen necessary for the reactions. B) Enzymes change reactants from solid to liquids during the reactions. C) The reactions take up too much space in the cell if the enzymes are missing. D) The reactions are too slow to meet the needs of the cell if enzymes are missing. Show Answer Correct Answer: D) The reactions are too slow to meet the needs of the cell if enzymes are missing. 8. Which scientist(s) mixed a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form? A) Griffith. B) Watson & Crick. C) Meselson & Stahl. D) Chargaff. Show Answer Correct Answer: A) Griffith. 9. In eukaryotic cells, transcription cannot begin until A) The two DNA strands have completely separated and exposed the promoter. B) Several transcription factors have bound to the promoter. C) The 5' caps are removed from the mRNA. D) The DNA introns are removed from the template. Show Answer Correct Answer: B) Several transcription factors have bound to the promoter. 10. What happens in Inversion? A) Its repeated. B) They all get deleted. C) A section of the chromosome gets flipped. D) They start to cross-over. Show Answer Correct Answer: C) A section of the chromosome gets flipped. 11. In what phase of the cell cycle does DNA replication take place? A) G1. B) S. C) G2. D) M. Show Answer Correct Answer: B) S. 12. Describes the twisted ladder-like shape of a DNA molecule A) Nitrogen Base. B) Hexagon. C) Double Helix. D) None of above. Show Answer Correct Answer: C) Double Helix. 13. Ligases are the glue of biotechnology. What enzymes act like scissors? A) Restriction enzymes. B) Helicases. C) Polymerases. D) Primase. Show Answer Correct Answer: A) Restriction enzymes. 14. The reactants of photosynthesis are A) Sugar and water. B) Sugar and oxygen. C) Carbon dioxide and water. D) Carbon dioxide and oxygen. Show Answer Correct Answer: C) Carbon dioxide and water. 15. Which of the following accurately describe the steps of recombinant DNA technology using bacteria? A) Plasmid & genes are cut --> cut DNA joined with ligase to make rDNA plasmids --> rDNA plasmids are inserted into the bacteria --> bacteria & rDNA plasmid multiply --> bacteria are broken open & protein is collected. B) Cut DNA joined with ligase to make rDNA plasmids --> rDNA plasmids are inserted into the bacteria --> plasmid & genes are cut -->bacteria & rDNA plasmid multiply --> bacteria are broken open & protein is collected. C) Plasmid & genes are cut -->bacteria & rDNA plasmid multiply --> bacteria are broken open & protein is collected-->cut DNA joined with ligase to make rDNA plasmids --> rDNA plasmids are inserted into the bacteria. D) Cut DNA joined with ligase to make rDNA plasmids --> rDNA plasmids are inserted into the bacteria --> bacteria & rDNA plasmid multiply. Show Answer Correct Answer: A) Plasmid & genes are cut --> cut DNA joined with ligase to make rDNA plasmids --> rDNA plasmids are inserted into the bacteria --> bacteria & rDNA plasmid multiply --> bacteria are broken open & protein is collected. 16. Gel electrophoresis sorts DNA molecules on the basis of their.. A) Ability to bind to mRNA. B) Size. C) Solubility in water. D) Solubility in the gel. Solubility in the gel. Show Answer Correct Answer: B) Size. 17. Which is a difference between DNA and RNA A) RNA is double stranded. B) RNA is not made of nucleotides. C) RNA contains Uracil instead of Thymine. D) RNA does not contain a sugar. Show Answer Correct Answer: C) RNA contains Uracil instead of Thymine. 18. How would the absence of sunlight affect a plant's ability to grow? A) The plant could not absorb nutrients from soil. B) The plant could not absorb water from the soil. C) The plant could not produce carbon dioxide and oxygen. D) The plant could not produce food through photosynthesis. Show Answer Correct Answer: D) The plant could not produce food through photosynthesis. 19. Transcription happens in the ..... and Translation happens in the ..... A) Ribosome, nucleus. B) Cytoplasm, nucleus. C) Nucleus, cytoplasm. D) Nucleus, nucleus. Show Answer Correct Answer: C) Nucleus, cytoplasm. 20. Which scientist(s) made an x-ray diffraction photo of DNA? A) Rosalind Franklin. B) Watson and Crick. C) Charles Darwin. D) Erwin Chargaff. Show Answer Correct Answer: A) Rosalind Franklin. ← PreviousNext →Related QuizzesMolecular Biology Quiz 1Molecular Biology Quiz 2Molecular Biology Quiz 3Molecular Biology Quiz 4Molecular Biology Quiz 5Molecular Biology Quiz 6Molecular Biology Quiz 7Molecular Biology Quiz 8Molecular Biology Quiz 9Molecular Biology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books