01
True or false
1 point
Cell theory states that new cells arise spontaneously rather than from pre-existing cells.
Free Practice Quiz Question List
3 Cell Structure and Function Online Quiz Questions
Use this free practice quiz with 20 questions to review 3 Cell Structure and Function, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
A biologist observes a cell wall around a cell. This observation alone establishes that the cell is prokaryotic.
- A
True
- B
False
03
Choose one
1 point
A cell needs an internal framework that helps maintain its shape and organize structures within the cytoplasm. Which structure best fits this role?
- A
Digest and recycle materials
- B
Help maintain cell shape and organize internal structures
- C
Modify and package proteins for delivery
- D
Capture light energy for photosynthesis
04
Written response
1 point
In some cells, which organelle carries out detoxification in addition to making lipids?
05
Fill in the blank
1 point
In a phospholipid bilayer, the water-attracting heads face the watery environments on both sides of the membrane, while the water-repelling tails point .
06
Choose one
1 point
A cell has DNA concentrated in a nucleoid region but no membrane-bound nucleus. How should it be classified?
- A
It is eukaryotic because all cells with DNA have a nucleus.
- B
It is eukaryotic because it has ribosomes.
- C
It is prokaryotic because it lacks a membrane-bound nucleus and has DNA concentrated in a nucleoid.
- D
It cannot be classified because prokaryotic cells lack DNA.
07
Choose all
1 point
Which features are shared by all cells? Select all correct choices.
- A
Plasma membrane
- B
Membrane-bound nucleus
- C
DNA
- D
Ribosomes
- E
Chloroplasts
08
Written response
1 point
A cell is placed in a solution with a higher concentration of nonpenetrating solutes than the cell. In which direction does water tend to move?
09
Choose one
1 point
A cell releases material that was enclosed inside a vesicle. Which process describes the vesicle fusing with the plasma membrane and discharging its contents outside?
- A
The plasma membrane encloses material and brings it into the cell.
- B
A channel protein moves a substance down its concentration gradient.
- C
A pump moves ions against an electrochemical gradient.
- D
A vesicle fuses with the plasma membrane and releases contents outside the cell.
10
Choose all
1 point
Which organelle-function pairings are accurate? Select all correct choices.
- A
The nucleus stores most of the cell’s DNA and regulates gene activity.
- B
The Golgi apparatus carries out much of cellular respiration and produces much of the cell’s ATP.
- C
Lysosomes digest and recycle materials in many animal cells.
- D
Ribosomes sort and package proteins and lipids for delivery.
11
Written response
1 point
Glucose moves into a cell down its concentration gradient with help from a carrier protein and without the cell directly using energy for that movement. What transport process is this?
12
Fill in the blank
1 point
A protein destined for export has been processed in the rough ER. Which organelle next modifies, sorts, and packages it for delivery?
13
Choose one
1 point
A plant cell contains a large central vacuole. Which function best matches vacuoles as described in the material?
- A
It captures light energy for photosynthesis.
- B
It stores or transports materials.
- C
It builds proteins.
- D
It digests and recycles materials in many animal cells.
14
Open ended
1 point
A cell that requires a great deal of energy contains many mitochondria. Explain how mitochondrial function helps meet this cell’s energy needs.
15
Choose one
1 point
A newly identified organism consists of just one cell. Which statement from cell theory is consistent with this observation?
- A
Living organisms may consist of a single cell.
- B
All cells contain a membrane-bound nucleus.
- C
Every cell has a cell wall.
- D
New cells form spontaneously from nonliving material.
16
Written response
1 point
A cell must digest and recycle materials inside it. Which organelle is especially associated with this function in many animal cells?
17
Choose one
1 point
A cell has a high demand for ATP. Which organelle carries out much of the cellular respiration that produces ATP?
- A
Golgi apparatus
- B
Lysosome
- C
Mitochondrion
- D
Smooth endoplasmic reticulum
18
Choose one
1 point
A phospholipid bilayer separates watery environments inside and outside a cell. How are its phospholipids oriented?
- A
The tails face the watery environments, and the heads point inward.
- B
The heads face the watery environments, and the tails point inward.
- C
Both heads and tails face the watery environments.
- D
Both heads and tails point toward the center of the bilayer.
19
Choose one
1 point
Glucose is more concentrated outside a cell than inside, and a carrier protein helps it enter. If glucose moves down its concentration gradient without the cell directly using energy for that movement, what process is occurring?
- A
Active transport, because glucose needs a carrier protein.
- B
Simple diffusion, because glucose moves down its concentration gradient.
- C
Exocytosis, because glucose crosses the plasma membrane.
- D
Facilitated diffusion, because a carrier protein assists movement down the gradient.
20
True or false
1 point
True or false: Active transport moves substances against a concentration or electrochemical gradient and requires energy.
- A
True
- B
False