Unit 2: Cell Structure & Function
Biology · Unit 2 · Paper 1

Cell Structure & Function unit test

A test on this unit alone, marked as a percentage and a letter grade — for the test your class is actually sitting, rather than for May. Answer everything, then submit once: seeing the answer to question 3 before attempting question 4 makes the final percentage meaningless.

Paper 1Paper 2Paper 3
Each paper is built from this unit’s 37 terms and is the same for everyone, so a teacher can assign “Unit 2, Paper 1” and every student sits the identical test. Multiple choice is marked objectively; the written sections you mark yourself against the model answer and rubric.
Suggested time 31 min 28 points0/17 attempted
1

Surface area to volume ratio

2

Osmosis

3

Golgi apparatus

4

Peroxisome

5

Tight junctions, desmosomes, gap junctions

6

Endocytosis and exocytosis

7

Fluid mosaic model

8

Plasmodesmata

9

Cytoskeleton

10

Hypotonic, hypertonic, isotonic

11

Active transport

12

Ribosome

Short answer 1. Define or explain: Prokaryote vs eukaryote

3 pts

Short answer 2. Define or explain: Cell wall

3 pts

Short answer 3. Define or explain: Nucleolus

3 pts

Short answer 4. Define or explain: Cholesterol in membranes

3 pts

Free response

4 pts

A student places a plant cell in a solution and observes that the cytoplasm pulls away from the cell wall.

Identify the tonicity of the solution relative to the cell and name the process observed.

Explain, in terms of water potential, why water left the cell.

Explain why an animal cell placed in the same solution would look different from this plant cell.