BIO1140-2024-Midterm-Marking scheme-Section C

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BIO1140-2024-Midterm-Marking scheme-SECTION C 20 MCQ (20 marks) and 5 SAQ (14 marks) MCQ1. The method of scientific inquiry that draws conclusions from careful observations to formulate a tentative answer is known as which of the following? A. predictive science B. deductive reasoning C. inductive reasoning D. quantitative science E. qualitative science Correct Answer: C MCQ2. The vast majority of molecular interactions are: A. transient B. permanent C. of extremely high affinity D. of strong affinity Correct Answer: A MCQ3. What unit of length would you generally use to give the measurement of a typical human cell? A. Centimeters B. Nanometers C. Millimeters. D. Micrometers. E. Meters Correct answer: D MCQ4. Molecules that have high affinity for each other will: A. remain bound to each other for a relatively long amount of time. B. remain bound to each other for a relatively short amount of time. C. not bind to each other. D. covalently attach to each other once they bind. E. Bind to each other permanently. Correct Answer: A
BIO1140-2024-Midterm-Marking scheme-SECTION C MCQ5. A water sample from a hot thermal vent contained a single-celled organism that lacked a nucleus. What is its most likely classification? A. Eukarya B. Archaea C. Animalia D. Protista E. Fungi Correct Answer: B MCQ6. Which of the following statements about the evolution of present-day organisms are true? I. Eukaryotes preceded prokaryotes. II. Eukaryotes arose from eubacteria long after archaebacteria and eubacteria had diverged from each other. III. Eukaryotes acquired chloroplasts before they acquired mitochondria. IV. Eukaryotes acquired mitochondria before the acquired chloroplasts. V. Endoplasmic reticulum was created by membrane infoldings. A. IV, V B. II, III C. I, III D. III, V E. II, IV Correct Answer: A MCQ7. Which of the following statements about mutations are true? I. Mutations are always harmful to an organism. II. Mutations are always beneficial to an organism. III. Mutations are essential for evolution to occur. IV. Mutations always lead to evolution. V. Mutations occur naturally. A. I, III, IV, V B. II, III, IV, V C. III, V D. III, IV E. II, V Correct Answer: C
BIO1140-2024-Midterm-Marking scheme-SECTION C MCQ8. All DNA in a cell constitute its ____________. A. Genetics B. Genome C. Gene D. Biology E. Energy Correct Answer: B MCQ9. The lipid bilayer is held together mainly by: A. Covalent bonding between membrane lipids. B. Hydrogen-bonding between the phospholipid tails. C. Repulsion between the phospholipid tails and water. D. Covalent bonding between the ends of phospholipid tails in opposite layers. E. Hydrogen-bonding between the head groups of phospholipids Correct Answer: C MCQ10. Which of the following movements can a membrane protein make by lateral diffusion through the lipid bilayer? A. Movement from the apical plasma membrane to the basal plasma membrane in a gut epithelial cell. B. Movement from the outer nuclear membrane to the inner nuclear membrane. C. Movement from the outer mitochondrial membrane to the inner mitochondrial membrane, D. Movement from the outer nuclear membrane to the endoplasmic reticulum E. Non of the above. Correct Answer: D. MCQ11. In a typical animal cell, which of the following types of transport occur through a channel protein? A. Movement of amino acids into a cell. B. Movement of Na+ out of a cell. C. Movement of Na+ into a cell. D. Movement of glucose into a starved cell. E. Movement of glucose out of a starved cell. Correct Answer: C.
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