Multiple Choice Questions: Choose the BEST answer that completes the statement o
ID: 3477639 • Letter: M
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Multiple Choice Questions: Choose the BEST answer that completes the statement or answers the ques Use a "2 pencil to fill in your 50-Question Scantron Form No. 95946. Which of the following is CORRECI about an mRNA sequence coding for a 10-amino acid peptide? A. B. C. D. E. 11 codons 33 nucleotides 10 exons &1 intron A&B; A. B&C; What would happen if you increase the concentration of carbon dioxide in a solution? A. The solution becomes more basic B. The color of the solution turns from colorless to red C. The pH of the solution remains the same D. The color of the solution turns from colorless to blue E. The solution becomes more acidic Which of the following is required by EACILITATED diffusion? A. B. C. D. E. Transmembrane proteins Concentration gradients Cellular energy or ATP A & B A, B&C; Which of the following is used as a building block for glycogen? A. Glucose B. Ribose C. Fructose D. Deoxyribose E. Galactose Which of the following organelles displays DOUBLE-membrane architecture? A. Nucleus B. Mitochondria C. Golgi apparatus D. A& B E. A, B&C; DNA molecules are separated into opposite poles during which of the following phases? A. Telophase B. Metaphase C. Interphase D. Prophase E. Anaphase Which of the following is required by SIMPLE diffusion? A. Transmembrane proteins B. Concentration gradients C. Cellular energy or ATP A & B A, B & C D. E. Page 1 of 4Explanation / Answer
1. Option C is correct. 11 codons will be needed. 10 codon will code 10 amino acid and one extra codon which will act as stop codon. Stop codon does not code for any amino acid while starting codon also codes for an amino acid. Since one codon contains three nucleotides therefore total number of nucleotides will be 33. One exon may have more than one codon.
2. Option E is correct. CO2 react with water and form carbonic acid whic makes solution more acidic.
3. Option D is correct. Facilitated diffusion is passive process which occurs downhill to the concentration gradient through transmembrane protein. Since it is passive process, does not require energy.
4. Option A is correct. Glucose is converted into glycogen by the process of glycogenesis which is act as stored energy.
5. Option E is correct. Nucleus, mitochondria and golgiapparatus are double membrane bound organelles.
6. Option E is correct. During anaphase, sister chromosome separated towards opposite poles with the help of spindle fiber.
7. Option B is correct. Simple diffusion occurs due to concentration gradient. This does not require any transmembrane protein or any type of energy.
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