This quiz works best with JavaScript enabled. Home > Agriculture > Biology > Molecular > Molecular Biology – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 16 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When in the cell cycle is DNA replication? A) Mitosis. B) Go of interphase. C) Meiosis. D) S phase of interphase. Show Answer Correct Answer: D) S phase of interphase. 2. The end products of translation are A) RNA. B) Lipids. C) Polypeptide. D) DNA. Show Answer Correct Answer: C) Polypeptide. 3. What are the backbones (sides) of the DNA structure made up of? A) Repeating phosphates and sugars. B) Nitrogen bases. C) Nucleotides. D) Adenine and thymine. Show Answer Correct Answer: A) Repeating phosphates and sugars. 4. Research has shown that the genetic code is not entirely universal. Which research finding has shown this? A) Some amino acids are coded for by more than one codon. B) There are differences between the base sequences of genes in different species. C) In some organisms the genetic code for mitochondria differs from the genetic code for the nucleus. D) Some codons code for the addition of an amino acid and some code for the termination of translation. Show Answer Correct Answer: C) In some organisms the genetic code for mitochondria differs from the genetic code for the nucleus. 5. The initial RNA formed is A) TRNA. B) Heterogenous nuclear RNA. C) ScRNA. D) Mature RNA. Show Answer Correct Answer: B) Heterogenous nuclear RNA. 6. What is one role of the element phosphorus? A) It forms part of the structure of ribose. B) It forms part of the structure of amino acids. C) It forms part of the structure of fatty acids. D) It forms part of the structure of nucleotides. Show Answer Correct Answer: D) It forms part of the structure of nucleotides. 7. Which is true of aerobic cellular respiration? A) Lactate and large amounts of ATP produced. B) Large amounts of CO2, H2O and ATP produced. C) Large amounts of CO2, H2O and small amounts of ATP produced. D) Small amounts of lactate and ATP produced. Show Answer Correct Answer: B) Large amounts of CO2, H2O and ATP produced. 8. The strand on which the mRNA is constructed A) Template antisense. B) Coding strand. C) Sense strand. D) RNA strand. Show Answer Correct Answer: A) Template antisense. 9. Any change in the sequence of DNA is..... A) Mutation. B) Single Genotype. C) Monohybrid Trait. D) Transgenic shift. Show Answer Correct Answer: A) Mutation. 10. Which of the following terms describes the process of the uptake of recombinant plasmids into bacteria cells? A) RDNA plasmid. B) Transformation. C) Transferrence. D) RDNA technology. Show Answer Correct Answer: B) Transformation. 11. Translation involves all of the following types of molecules except A) MRNA. B) Amino acids. C) TRNA. D) DNA. Show Answer Correct Answer: D) DNA. 12. The making of mRNA from DNA is called? A) Transcription. B) Translation. C) Replication. D) Duplication. Show Answer Correct Answer: A) Transcription. 13. How is the sequence of DNA conserved A) Transcription into complementary RNA for protein synthesis. B) Separation of sister chromatids to opposite poles during mitosis. C) Conservation of DNA by the enzyme sequenceconservertase. D) Complementary base pair matching during DNA replication. Show Answer Correct Answer: D) Complementary base pair matching during DNA replication. 14. The double helix model was proposed by A) Watson and Crick. B) Griffith. C) Avery. D) Beadle and Tatum. Show Answer Correct Answer: A) Watson and Crick. 15. Which molecule is a polysaccharide? A) Glycogen. B) Lactase. C) Glycerol. D) Triglyceride. Show Answer Correct Answer: A) Glycogen. 16. The fragments on the lagging strand that are made up of repeating segments of DNA and RNA Primers A) Unused DNA. B) Primase. C) Polymerase. D) Okazaki fragments. Show Answer Correct Answer: D) Okazaki fragments. 17. Which of the following statements about the genetic code is true? A) A codon can specify more than one amino acid. B) Every codon specifies a different amino acid. C) Some codons specify the same amino acid. D) Some codons have no function at all. Show Answer Correct Answer: C) Some codons specify the same amino acid. 18. How many pairs of chromosomes are found in human body cells? A) 23 pairs. B) 46 pairs. C) 2 pairs. D) 4 pairs. Show Answer Correct Answer: A) 23 pairs. 19. Which biomolecule is responsible for insulation and energy storage? A) Protein. B) Lipid. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: B) Lipid. 20. What is the correct description of bacterial chromosomes? A) Many linear pieces of DNA in the nucleus. B) Many linear pieces of DNA in the cytoplasm. C) One circular piece of DNA in the cytoplasm. D) Many circular pieces of DNA in the nucleus. Show Answer Correct Answer: C) One circular piece of DNA in the cytoplasm. 21. The Central Dogma of Molecular Biology is A) A summary of how DNA is used to make more DNA, RNA and protein. B) A translation of DNA codons into amino acids. C) The base pairing rules. D) No longer true. Show Answer Correct Answer: A) A summary of how DNA is used to make more DNA, RNA and protein. 22. A scientist cloned a goat. Which of these is a true statement about the cloned goat? A) It has new genes and traits. B) It lacks the genes for reproduction. C) It has the genes that are identical to the original goat. D) It looks the same but has different genes. Show Answer Correct Answer: C) It has the genes that are identical to the original goat. 23. Where photosynthesis happens A) Chloroplast. B) Nucleus. C) Mitochondria. D) None of above. Show Answer Correct Answer: A) Chloroplast. 24. In eukaryotes, functional messenger RNA molecules are made from A) Exons spliced together after introns are removed. B) Introns spliced together after exons are removed. C) Exons spliced together with introns. D) Long pieces of RNA shortened by the Dicer enzyme. Show Answer Correct Answer: A) Exons spliced together after introns are removed. 25. What is the process of converting mRNA message into protein? A) Replication. B) Transcription. C) Translation. D) None of above. Show Answer Correct Answer: C) Translation. 26. Which molecule can we find the promoter and terminator in? A) TRNA. B) DNA. C) MRNA. D) Polypeptide chain. Show Answer Correct Answer: B) DNA. 27. How can the rate of photosynthesis be measured? I. By the amount of oxygen produced II. By the increase in biomass III. By the amount of carbon dioxide produced A) I only. B) I and II only. C) I and III only. D) I, II and III. Show Answer Correct Answer: B) I and II only. 28. When the low level of transcription occur? A) Glucose absent, lactose present. B) Glucose absent, lactose absent. C) Glucose present, lactose absent. D) Glucose present, lactose present. Show Answer Correct Answer: D) Glucose present, lactose present. 29. Which best describes the nutrients that are sources of energy for the body? A) Fats and proteins. B) Fats and carbohydrates. C) Water and carbohydrates. D) Calcium and fiber. Show Answer Correct Answer: B) Fats and carbohydrates. 30. What is a promoter? A) Sequence of DNA at the beginning of the gene that tells the ribosome where to start transcription. B) Sequence of RNA that tells RNA polymerase where to start translation. C) Sequence of DNA at the beginning of the gene that tells RNA polymerase where to start transcription. D) Sequence of RNA that tells the ribosome where to start translation. Show Answer Correct Answer: C) Sequence of DNA at the beginning of the gene that tells RNA polymerase where to start transcription. ← PreviousNext →Related QuizzesBiology QuizzesAgriculture QuizzesMolecular Biology Quiz 1Molecular Biology Quiz 2Molecular Biology Quiz 3Molecular Biology Quiz 4Molecular Biology Quiz 5Molecular Biology Quiz 6Molecular Biology Quiz 7Molecular Biology Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books