3 minute read
Quiz
by AudioLearn
QUIZ
1. What is the major component of cell membranes when it comes to numbers of molecules?
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a. Intramembranous proteins b. Phospholipids c. Cholesterol d. Glycoproteins
Answer: b. Phospholipids make up the majority of the molecules making up the cell membrane. Interestingly, because proteins are heavier, they make up more of the actual mass of the cell than lipids.
2. What do membrane-associated G-protein-coupled proteins do?
a. They exchange sodium and potassium ions b. They block the transport of glucose inside the cell c. They affect intracellular changes within the cell d. They help make ATP for membrane processes
Answer: c. G-protein-coupled proteins will bind to molecules outside of the cell and affect intracellular changes within the cell itself. They cause signaling molecules to become activated, sending a signal deep within the cell.
3. Where are ribosomes mainly located on an animal cell?
a. On rough endoplasmic reticulum b. Within the nucleus c. Membrane-bound within the cytoplasm d. Inside lysosomes
Answer: a. The ribosomes are studded along the surface of rough endoplasmic reticulum or RER, which accounts for the “roughness” or rough appearance of the endoplasmic reticulum.
4. What is the main function of the mitochondria inside an animal cell?
a. To package lipids for transport b. To make proteins c. To send signals to other parts of the cell d. To create cellular energy
Answer: d. Mitochondria are the metabolic powerhouses of the cell that create cellular energy through metabolic processes.
5. What molecule requires protein channels to cross across the cell membrane in what’s called facilitated diffusion? a. Carbon dioxide b. Glucose c. Ammonia d. Oxygen
Answer: b. Glucose requires a special protein channel in order to cross the cell membrane—a process called facilitated diffusion.
6. If an animal cell were placed in water, what would happen to the cell?
a. Water would passively enter the cell and would burst the cell. b. Water would passively leave the cell and the cell would dehydrate. c. Solutes would leave the cell, shrinking the cell. d. Water would be pumped out of the cell, equalizing the osmotic pressure.
Answer: a. The water would go from a high concentration of water outside of the cell to an area of low concentration inside the cell passively; this would ultimately burst the cell.
7. What cell process makes the most ATP energy in the animal cell?
a. Anaerobic respiration b. Glycolysis c. Electron transport d. Krebs cycle
Answer: c. The vast majority of ATP molecules are created as part of the complex electron transport process in the cell. The other processes also make ATP but to a lesser extent.
8. Which type of molecule is coded for by the DNA in the animal cell?
a. Carbohydrate b. Lipid c. Nucleic acid d. Protein
Answer: d. DNA only condes for proteins; it does not code for any other type of molecule but for the proteins that participate in making these other molecules.
9. Which type of cell in a complex animal organism is most likely to be in the
Gap 0 or G0 stage of the cell cycle?
a. Liver cell b. Epithelial cell c. Skin cell d. Neuron
Answer: d. Neurons do not divide and instead are always quiescent and are in the G0 stage of the cell cycle. The other cells are always dividing or can go on to divide after periods of quiescence.
10. Which is the last phase in the process of mitosis?
a. Prophase b. Telophase c. Metaphase d. Anaphase
Answer: b. Telophase is the last phase in the process of mitosis, which goes through five different phases in a specific order.
