7.1- Life is Cellular

Question 1

What is the cell theory?

Answer 1

The cell theory states: 1) all living things are made up of cells 2) cells are the basic units of structure and function in living things 3) new cells are produced from existing cells

Question 2

How do microscopes work? What types are there?

Answer 2

Most microscopes use lenses to magnify the image of an object by focusing light or electrons Types include light compound microscope, transmission electron microscope, and scanning electron microscope

Question 3

How are prokaryotic and eukaryotic cells different?

Answer 3

Prokaryotic cells do not separate their genetic material within a nucleus (like a studio apartment) Eukaryotic cells separate the genetic material from the rest of the cell (like a mansion)

Question 4

What is a cell?

Answer 4

Basic units of life that make up all living things

Question 5

What is a cell membrane? What are they made of?

Answer 5

A thin flexible barrier that surrounds every cell. Membranes are made up of a phospholipid bilayer, hydrophilic phosphoric heads and hydrophobic lipid tails.

Question 6

What is a nucleus?

Answer 6

A large membrane-enclosed structure that contains genetic material in the form of DNA and controls many of the cell’s activities.

Question 7

What is a eukaryote?

Answer 7

cells that have their DNA enclosed in a nucleus

Question 8

What is a prokaryote?

Answer 8

cells that do not enclose their DNA in a nucleus