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How much do you remember? 1. All cells possess (mark all that apply) Cytoplasm Nuclei Plasma Membrane Cell walls Mitochondria Chloroplasts DNA RNA Ribosomes 2. The difference between prokaryotes and eukaryotes is the presence or absence of: (mark all that apply) Cell walls Nuclei DNA Mitochondria Ribosomes Chloroplasts Enzymes 3. Eukaryotes are multicellular and prokaryotes are unicellular. True or false? 4. Which of the following elements is the most abundant in living cells (as a percentage of the total number of atoms)? Hydrogen Carbon Nitrogen Oxygen Phosphorus Sulfur 5. Most cells function within a fairly narrow temperature range. When the temperature is lower or higher by even a few degrees, cells stop functioning. What accounts for this? 6. If a gene is mutated, this will definitely lead to: (mark all that apply) A change in the protein encoded by the gene A change in the RNA encoded by the gene A nonfunctional protein being made A change in the nucleic acid sequence of the gene 7. Drugs are available that can inhibit DNA synthesis. When cells are treated with such drugs, you would expect that: The cells can no longer make proteins The cells can no longer make nucleotides The cells can no longer reproduce The cells would be unable to do all three of the processes listed above. 8. Identify the important cellular structures shown in the figure below. Is this a plant cell or an animal cell? How do you know?
