This quiz works best with JavaScript enabled. Home > Biology > Molecular > Molecular Biology – Quiz 44 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 44 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Even though your body changes and you develop new physical and behavioral characteristics, your ..... never changes. A) Archetype. B) Phenotype. C) Appearance. D) Genotype. Show Answer Correct Answer: D) Genotype. 2. Where do plants get the energy for photosynthesis to take place? A) Nutrients in the soil. B) The sun. C) Chlorophyll. D) Bee pollination. Show Answer Correct Answer: B) The sun. 3. The backbone of DNA molecule is made of: A) A-T-C-G. B) MRNA. C) Sugar and phosphate. D) Ribose sugar. Show Answer Correct Answer: C) Sugar and phosphate. 4. What is mRNA's purpose? A) To bring amino acids to the ribosome. B) To make up ribosomes. C) To make DNA. D) To carry DNA's message out of the nucleus. Show Answer Correct Answer: D) To carry DNA's message out of the nucleus. 5. All macro-molecules are made of building blocks called monomers. What are the building blocks of nucleic acids, like DNA and RNA, called? A) Nucleotides. B) Nitrogen bases. C) Sugar-phosphate. D) A-T-C-G. Show Answer Correct Answer: A) Nucleotides. 6. Translation occurs in the A) Nucleus. B) Mitochondria. C) Cytoplasm. D) Golgi apparatus. Show Answer Correct Answer: C) Cytoplasm. 7. The mRNA has bases similar to ..... strand of DNA A) Anti sense. B) Sense. C) Non coding. D) Template. Show Answer Correct Answer: B) Sense. 8. The process in which DNA is synthesized from a template strand is A) Translation. B) Replication. C) Transcription. D) Transformation. Show Answer Correct Answer: B) Replication. 9. Which is NOT part of the reason for water's thermal properties? A) Large amount of hydrogen bonding. B) Water is dipolar. C) High strength of hydrogen bonds. D) Attraction between opposite partial charges. Show Answer Correct Answer: C) High strength of hydrogen bonds. 10. Which properties explain the ability of water to dissolve solutes?I. Polarity of water molecules II. High specific heat capacity of water III. Hydrogen bonding A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: B) I and III only. 11. During replication, which sequence of nucleotides would bond with the DNA sequence TATGA? A) TATGA. B) ATACT. C) CACTA. D) AGTAT. Show Answer Correct Answer: B) ATACT. 12. If an mRNA codon is AGU, which of the following would be the appropriate tRNA anticodon? A) TCA. B) UGA. C) AGU. D) UCA. Show Answer Correct Answer: D) UCA. 13. Which is NOT a correct pair of element with its number of covalent bonds? A) C, 4. B) P, 5. C) N, 3. D) H, 2. Show Answer Correct Answer: D) H, 2. 14. Which of these is not a part of mRNA processing A) 5' cap. B) Chromatin packaging. C) 3' Poly A tail. D) Splicing. Show Answer Correct Answer: B) Chromatin packaging. 15. Three nucleotides are deleted from a gene. What will happen to the protein that is made from this gene? A) One amino acid will be missing. B) All the amino acids after the mutation will be wrong. C) One amino acid will be added. D) There will be no effect. Show Answer Correct Answer: A) One amino acid will be missing. 16. ..... make protein for the cell. A) Nuclei. B) Ribosomes. C) Endoplasmic reticulum. D) Vacuoles. Show Answer Correct Answer: B) Ribosomes. 17. Describe how the processes of transcription and translation lead to the synthesis of the body's proteins. A) During transcription, the DNA template strand is used a pattern for building a molecule of mRNA. The mRNA molecule leaves the nucleus and attaches to a ribosome. During translation, the ribosomes use the sequence of nitrogenous bases contained in the mRNA as code for assembling a chain of amino acids. Several of the polypeptide chains are combined to form a protein. B) During translation the DNA template strand is used a pattern for building a molecule of mRNA. The mRNA molecule leaves the nucleus and attaches to a ribosome. During transcription, the ribosomes use the sequence of nitrogenous bases contained in the mRNA as code for assembling a chain of amino acids. Several of the polypeptide chains are combined to form a protein. C) Different amino acids have different polarities. The change in the amino acid sequence thus causes a change in the overall shape of the protein. Since structure largely determines function, the changed protein doesn't function correctly. D) I have no clue. Show Answer Correct Answer: A) During transcription, the DNA template strand is used a pattern for building a molecule of mRNA. The mRNA molecule leaves the nucleus and attaches to a ribosome. During translation, the ribosomes use the sequence of nitrogenous bases contained in the mRNA as code for assembling a chain of amino acids. Several of the polypeptide chains are combined to form a protein. 18. Histone Aceytlation is A) The addition of lysine to histone tails, allowing transcription to occur. B) The increased translation rate of a gene. C) The addition of an acetyl group to the tail of a histone protein which packs the DNA tighter, not allowing the expression of the genes. D) The addition of an acetyl group to the tail of a histone protein which unpacks the DNA, allowing the genes to be expressed. Show Answer Correct Answer: D) The addition of an acetyl group to the tail of a histone protein which unpacks the DNA, allowing the genes to be expressed. 19. How is the information in the genetic code used? A) To predict the genotype of gametes. B) To distinguish prokaryotic genomes from eukaryotic genomes. C) To deduce phenotypes in pedigree charts. D) To translate mRNA into polypeptides. Show Answer Correct Answer: D) To translate mRNA into polypeptides. 20. The hierarchy order is A) Kingdom--species--family--order--class--genus--phylum. B) Kingdom--phylum--class--order--family--genus--species. C) Kingdom--phylum--class--family--order---genus--species. D) Kingdom--family--phylum--class--order--genus--species. Show Answer Correct Answer: B) Kingdom--phylum--class--order--family--genus--species. ← PreviousNext →Related QuizzesBiology 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books