Cell Structure and Function Quiz

Which structure-function pair is incorrectly matched?

• Vacuole - Storage

• Chloroplast - Photosynthesis

• Ribosome - Synthesis of lipids, detoxification of drugs and poisons

• Lysosome - Breakdown of ingested substances, damaged organelles recycled

Which of the following statements regarding the nucleus is false?

• Location of cellular respiration

• Houses chromosomes

• Contains chromatin

• Surrounded by a double membrane

Which part of the cell allows the cell to discriminate in its chemical exchanges with its environment?

• Cytoskeleton

• Cilia

• Plasma Membrane

• Cell Wall

Which statement is true of both mitochondria and chloroplasts?

• Both play a role in energy conversion

• Both are sites of cellular respiration

• Both convert energy from sugar, fats and other fuels into ATP

• They are both part of the endomembrane system

Which of the following statements best describes the relationship between metabolic rate per unit body mass and the size of multicellular organisms?

• Larger organisms have a higher metabolic rate per unit body mass due to their greater number of cells

• The metabolic rate per unit body mass is constant across all multicellular organisms, regardless of size.

• Smaller organisms have a higher metabolic rate per unit body mass due to a larger surface area to volume ratio.

• Metabolic rate per unit body mass is inversely proportional to an organism's age, not its size.

Which group of organelles works together to regulate protein traffic and performs metabolic functions of the cell?

• Golgi apparatus, endoplasmic reticulum, lysosomes, and vacuoles

• Nucleus and ribosomes

• Mitochondria, chloroplast, peroxisome

• Nuclear envelope, nucleolus, chromatin

The interior of most animal cells is negatively charged due in part to the sodium potassium pump. As a result of the membrane potential produced, which of the following is most likely to occur?

• Positive ions will enter the cell through the membrane.

• Positive ions will enter the cell through a protein.

• Negative ions will enter the cell through the membrane.

• Negative ions will enter the cell through a protein.

One significant difference between eukaryote and prokaryote cells is the presence of membrane bound organelles. Which of the following best explains how internal membranes contribute to the efficiency of cellular processes?

• They prevent the entry of harmful substances into the cell, thereby maintaining cellular integrity.

• They provide a rigid framework for the cell, offering structural support and preventing collapse.

• They provide a rigid framework for the cell, offering structural support and preventing collapse.

• They compartmentalize the cell, minimizing competing reactions and increasing the surface area for specialized biochemical activities.

Which of the following observations support the endosymbiotic theory for the origin of mitochondria and chloroplasts?

• Mitochondria and chloroplasts contain their own circular DNA molecules, similar to prokaryotic chromosomes.

• Mitochondria and chloroplasts are roughly the same size as typical bacteria.

• Mitochondria and chloroplasts divide by binary fission, a process characteristic of prokaryotes.

• All of the above support the claim that mitochondria and chloroplasts are the result of an endosymbiotic event.

Which description best matches the diagram?

• An animal cell in a hypertonic solution

• An animal cell in a hypotonic solution

• A plant cell in an isotonic solution

• A plant cell in a hypotonic solution