Cells

Question 1

What are the 2 types of cells?

Answer 1

Prokaryotes & Eukaryotes

Question 2

What is the cell theory?

Answer 2

1. All living things are made of cells
2. Cells are the smallest components of living things
3. New cells come from pre-existing cells

Question 3

What is the difference between prokaryotes and

eukaryotes?

Answer 3

Prokaryotes = small, simple cells; no nucleus, free floating DNA
Eukaryotes = large, complex cell; DNA contained in nucleus

Question 4

What is the difference between passive and

active transport?

Answer 4

Passive = doesn’t require energy; with concentration gradient (high  low)
Ex. diffusion & facilitated diffusion
Active = requires energy; against concentration gradient
Ex. endocytosis & exocytosis

Question 5

What happens to a cell when put into the following solutions?

1. Hypotonic
2. Isotonic
3. Hypertonic

Answer 5

1. Cell swells; H2O in/ solute out
2. Cell stays the same; H2O in & out/ solute in & out
3. Cell shrinks; H2O out/ solute in