Cellular 1. A cell nucleus has which of the following? I. Proteins II DNA III RN

Question

Cellular 1. A cell nucleus has which of the following? I. Proteins II DNA III RNA B) II C) I and Il only D) II and IIl only E) I, II, and I 2. Which of the following organelles utilizes signal peptides to target newly synthesized proteins? A) Lysosome B) Cytosol C) Chloroplast DEndoplasmic Reticulum E) Golgi apparatus 3. Approximately what percentage of the human genome codes for proteins? A) 296 B) 25% C) 50% D) 99% E) 100% 4. Which of the following explains why enzymes facilitate chemical reactions? They raise the temperature of the reaction and make products appear quickly A) B) They change the Ke of the reaction and make products appear quickly C) They donate energy to the reaction D) They raise the activation energy E) They lower the activation energy 5. Submerging red blood cells in distilled water will result in A) lysis of the cells. B) plasmolysis of the cell. C) the cell becoming turgid. D) the cell becoming flacid. E) no change 6. Which of the following pieces of equipment is best suited to examine the internal structure of cells at a level of resolution that reveals the smallest organelles? A) Compound light microscope B) Transmission Electron Microscope (TEM) C) Scanning electron microscope (SEM) D) Centrifuge E) Phase-contrast microscope

Explanation / Answer

Ans .

1 (E) , 2 (D), 3 (A) , 4 (E), 5 (A)

6 (B) , 7 (E), 8 (C), 9 (B) , 10 (A)

11 (E), 12 (D), 13 (C), 14 (E) , 15 (A)

16 (D) , 17 (C), 18 (B), 19 (E) , 20 (A)

21 (A) , 22 (A) , 23 (C), 24 (E) , 25 (A)

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