7th - Science Study Guide for Quiz on Cells

Question 1

What are the three main differences between plant cells and animal cells?

Answer 1

1. Cell Wall - only in plants
2. Chloroplasts - only in plants
3. Photosynthesis

Question 2

What does the cell theory tell us about cells?

Answer 2

1. All living things are made of one or more cells.
2. The cell is the smallest unit of life.
3. All new cells come from preexisting cells.

Question 3

What does the nucleus of a cell contain and what is its function?

Answer 3

Contains genetic information and tells the cells what to do

Question 4

What substance is a cell mostly comprised of?

Answer 4

Water - 70%

Question 5

What are the four macromolecules in a cell and what are their functions?

Answer 5

1. Nucleic Acids - contain genetic information
2. Proteins - break down nutrients
3. Lipids - protective barriers in cells
4. Carbohydrates - store energy, provide structural support, and are needed for communication between cells

Question 6

What are three ways that cells obtain energy?

Answer 6

1. Cellular Respiration
2. Fermentation
3. Photosynthesis

Question 7

What is the difference between cellular respiration and photosynthesis?

Answer 7

1. Cellular Respiration converts the sugar in food into energy.
2. Photosynthesis converts light into energy

Question 8

Why would cells obtain energy from fermentation?

Answer 8

Cells would obtain energy from fermentation when they don’t have enough oxygen - fermentation does NOT use oxygen to make energy