Unit 1 Lesson 1

Question 1

Cell

Answer 1

The smallest functional and structural unit of all living organisms

Question 2

Organism

Answer 2

Any living thing

Question 3

The Cell Theory

Answer 3

Gives 3 basic characteristics of all cells and organisms

*All organisms are made up of 1 or more cells

*The cell is the basic unit of all organisms

*All cells come from existing cells

Question 4

Cell membrane

Answer 4

Protective layer that covers a cell’s surface and acts as a barrier between the inside of the cell and the cell’s environment

Question 5

Cytoplasm

Answer 5

The region enclosed by the cell membrane that includes the fluid and all of the organelles

Question 6

Organelle

Answer 6

A small body in a cell’s cytoplasm that is specialized to perform a specific function. Most have a membrane around them

Question 7

Nucleus

Answer 7

A membrane- bound organelle that contains the DNA of the cell

Question 8

Prokaryote

Answer 8

A single-celled organism that does not have a nucleus or membrane-bound organelles
Its DNA is located in the cytoplasm.
Has organelles called ribosomes that do not have a membrane
Are smaller than eukaryotes
Example: bacteria

Question 9

Eukaryote

Answer 9

An organism made up of cells that have their DNA in a nucleus
Contain membrane-bound organelles and ribosomes
Examples: plants, animals fungi