AP Biology Practice Quiz: Cell Structure and Function
Written by AP Content Team, Verified for 2026 AP Exams, Last updated: June 2026
Test your understanding with short quizzes. This quiz has 16 questions to check your progress.
Question 1 of 16
All Questions (16)
A) The endosymbiotic theory of organelle evolution
B) The common ancestry of all life
C) The role of proteins as the primary hereditary material
D) The independent evolution of protein synthesis in different domains
Correct Answer: B
The provided content states that ribosomes are 'found in all forms of life, reflecting common ancestry.' This universality suggests that the mechanism for protein synthesis evolved early and was passed down to all subsequent life forms from a common ancestor.
A) Smooth endoplasmic reticulum
B) Rough endoplasmic reticulum
C) Lysosomes
D) Central vacuole
Correct Answer: B
The content specifies that the Rough ER 'synthesizes proteins.' Cells that have a primary function of synthesizing and secreting proteins require a large and active Rough ER to meet this demand.
A) It provides mechanical support and shape to the organelle.
B) It increases the surface area available for the metabolic reactions of ATP synthesis.
C) It allows for the storage of hydrolytic enzymes in a contained space.
D) It facilitates the detoxification of harmful substances by embedding enzymes.
Correct Answer: B
The text states that the mitochondrion has 'convoluted inner folds that provide compartments for metabolic reactions and efficient ATP synthesis.' The folding, or convolution, dramatically increases the surface area, allowing more space for the protein complexes and enzymes involved in ATP synthesis to function, thus increasing efficiency.
A) Proteins and lipids would not be synthesized.
B) Cellular products would be packaged for trafficking but may be non-functional.
C) The cell would be unable to perform photosynthesis.
D) The cell would lose turgor pressure and wilt.
Correct Answer: B
The Golgi complex's role is to 'chemically modify, fold, and package cellular products.' If the modification step is eliminated, the packaging and trafficking might still occur, but the proteins and lipids would not be correctly processed, likely rendering them non-functional upon arrival at their destination.
A) Lysosome: contains hydrolytic enzymes for digestion.
B) Vacuole: contains rRNA for protein synthesis.
C) Mitochondrion: contains chlorophyll for photosynthesis.
D) Golgi complex: contains lipids for detoxification.
Correct Answer: A
According to the text, lysosomes are 'sacs containing hydrolytic enzymes that digest materials.' This is a direct match of the organelle with its contents and function.
A) Chloroplast
B) Mitochondrion
C) Large central vacuole
D) Smooth endoplasmic reticulum
Correct Answer: C
The content explicitly states that in plants, 'a large central vacuole stores nutrients and maintains turgor pressure.' As water enters the cell, the central vacuole swells and pushes against the cell wall, creating turgor pressure.
A) Ribosome → Golgi complex → Endoplasmic reticulum → Plasma membrane
B) Ribosome → Rough ER → Golgi complex → Transport vesicle → Plasma membrane
C) Smooth ER → Ribosome → Golgi complex → Lysosome
D) Ribosome → Cytosol → Mitochondrion → Plasma membrane
Correct Answer: B
This question synthesizes information about several organelles. A protein is synthesized by a ribosome (2), processed in the Rough ER (4), then sent to the Golgi complex for modification and packaging (5). The endomembrane system (3) then transports it via vesicles for secretion. This path correctly follows the flow of protein processing and transport.
A) Mitochondria
B) Chloroplasts
C) Ribosomes
D) Lysosomes
Correct Answer: B
The provided text directly states that chloroplasts, 'found in plants and algae... are the site of photosynthesis.'
A) rough ER synthesizes lipids, while the smooth ER synthesizes proteins.
B) rough ER provides mechanical support, while the smooth ER does not.
C) rough ER is involved in protein synthesis, while the smooth ER handles lipid synthesis and detoxification.
D) rough ER is part of the endomembrane system, while the smooth ER is not.
Correct Answer: C
The content clearly differentiates the two parts of the ER: 'Rough ER synthesizes proteins, while smooth ER synthesizes lipids and handles detoxification.' Both provide mechanical support and are part of the endomembrane system.
A) Common ancestry is reflected in shared cellular components.
B) Subcellular components and organelles contribute to the overall function of cells.
C) Programmed cell death is a necessary part of development.
D) Metabolic reactions require compartmentalization for efficiency.
Correct Answer: B
The text states that 'The endomembrane system works together to modify, package, and transport lipids and proteins.' This illustrates the core idea that the structure and function of individual subcellular components (like the ER and Golgi) contribute to a larger, overall function for the cell, as stated in the first content point.
A) Synthesis of large quantities of ATP.
B) Production of enzymes for intracellular digestion.
C) Synthesis of steroid hormones and detoxification of drugs.
D) Photosynthesis and glucose production.
Correct Answer: C
The content specifies that the smooth ER 'synthesizes lipids and handles detoxification.' Steroid hormones are lipids, so a cell producing them would need a large smooth ER. Detoxification, often a function of liver cells, also relies on the smooth ER.
A) To synthesize ATP through a series of metabolic reactions.
B) To synthesize, modify, package, and transport lipids and proteins.
C) To digest unwanted materials and recycle cellular components.
D) To convert light energy into chemical energy in the form of glucose.
Correct Answer: B
The text provides a concise definition for the endomembrane system's role: it 'works together to modify, package, and transport lipids and proteins within the cell.' This option directly reflects that statement.
A) Mitochondrion
B) Golgi complex
C) Ribosome
D) Lysosome
Correct Answer: D
The content states that lysosomes contain hydrolytic enzymes and 'play a role in programmed cell death (apoptosis).' The release of these digestive enzymes into the cell's cytoplasm is a critical step in the apoptotic pathway.
A) Lipids and carbohydrates
B) DNA and protein
C) rRNA and protein
D) Phospholipids and RNA
Correct Answer: C
This is a direct recall question. The text states that ribosomes are 'composed of rRNA and protein.'
A) It allows for the creation of compartments with distinct environments for specific metabolic reactions.
B) It facilitates the synthesis of proteins directly on the membrane surface.
C) It provides a rigid structure that maintains the shape of the cell.
D) It stores hydrolytic enzymes that would otherwise damage the cell.
Correct Answer: A
The text mentions that the double membrane of the mitochondria 'provide[s] compartments for metabolic reactions.' This compartmentalization, created by the inner and outer membranes, allows for the maintenance of chemical gradients and specific conditions necessary for processes like ATP synthesis and photosynthesis.
A) A double membrane with convoluted inner folds
B) A series of flattened membrane sacs
C) A network of membranous tubules and sacs called cisternae
D) A single membrane-bound sac containing hydrolytic enzymes
Correct Answer: B
The content explicitly describes the Golgi complex as 'a series of flattened membrane sacs.' This question tests direct recall of the organelle's structure.