Cells

Question 1

What are cells?

Answer 1

The smallest units of living things

Question 2

What is unicellular? Give Examples.

Answer 2

life forms that consist of only one cell e.g. bacteria

Question 3

What is multicellular? Give Examples.

Answer 3

life forms that are made up of many cells e.g. humans, animals, plants

Question 4

Cell Theory

Answer 4

• All living things are composed of one or more cells.
• The cell is the smallest form of life.
• All cells come from pre-existing cells, via cell division.

Question 5

What does the basic structure of all cells contain?

Answer 5

• Cell Membrane
• Cytoplasm
• DNA

Question 6

What is a Cell Membrane?

Answer 6

it acts like the ‘skin’, forming a barriers around the cell and controlling the entry and exit of wastes and nutrients.

Question 7

What is Cytoplasm?

Answer 7

the jelly-like fluid inside the cell membrane

Question 8

What is DNA?

Answer 8

the genetic information that contains instructions for making the proteins you body needs to keep you alive

Question 9

What are the 2 types of cells

Answer 9

Eukaryotic Cells & Prokaryotic Cells

Question 10

Eukaryotic Cells

Answer 10

• More complex, evolved from prokaryotes.
• Membrane bound organelles
• Contain a nucleus
• Usually multi-cellular
• They can be found in plants, animals and fungi.

Question 11

Prokaryotic Cells

Answer 11

• Ancient
• No membrane bound
• No nucleus
• Unicellular
• E.g. bacteria and archaea

Question 12

What is the nucleus? What does it contain?

Answer 12

• Control centre/dictator of the cell
• Contains DNA
• Usually, one per cell