Discovering Cells

Question 1

What is the total magnification of a microscope with two lenses when one lens is 15 and the other is 30?

Answer 1

450.

because you multiply 15x30.

Question 2

How does magnification occur in an electron microscope?

Answer 2

An electron beam creates the image.

Question 3

What are the three parts to cell theory?

Answer 3

All cells are produced from other cells.
They are the basic unit of structure and function.
All cells are produced from other cells

Question 4

How does the lens of a light microscope work?

Answer 4

Each CONVEX lens bends light to make the object appear larger.

Question 5

What does the term RESOLUTION refer to?

Answer 5

How sharp an image is.

Question 6

What is the function of the cell membrane?

Answer 6

To control what enters and leaves the cell

Question 7

Which organelle is the control center of the cell?

Answer 7

Nucleus

Question 8

What does the mitochondria do?

Answer 8

Covert energy from food to molecules into energy that the cell can use.

Question 9

Unlike Hooke, Leeuwenhoek observed cells that were…..

Answer 9

Alive.

Question 10

How does a bacterial cell differ from a plant or animal cell?

Answer 10

Bacteria do NOT have a nucleus.

Question 11

Which organelle is found in bacteria cells but also plant and animal cells?

Answer 11

Golgi bodies.

Question 12

Specialized cells are found only in…..

Answer 12

Many-celled organisms.

Question 13

What is the function of the cell wall?

Answer 13

To protect and support the cell.

Question 14

Unlike the cell wall, the cell membrane…

Answer 14

Is found in all cells

Question 15

Which organelles store food and other materials needed by the cell?

Answer 15

The vacuole.

Question 16

Which organelle release chemicals that break down large food particles into smaller ones?

Answer 16

Lysosomes

Question 17

The invention of the microscope made it possible for people to discover….

Answer 17

Cells.

Question 18

A light microscope that has two or more lenses is called ……. Microscope.

Answer 18

Compound

Question 19

A microscope allowed Hooke to see “tiny rectangular rooms” which he called ……. .

Answer 19

Cells.

Question 20

Cells are the basic unit of structure and …… In living things.

Answer 20

Function

Question 21

According to cell theory, all organisms are made of ……. .

Answer 21

Cells.

Question 22

The sharpness of an image produced by a microscope is called …… .

Answer 22

Resolution.

Question 23

A lens that is thicker in the center than at the edge is called a …… lens

Answer 23

Convex

Question 24

The nucleus of a cell has a thin strands called ……. that contain genetic material.

Answer 24

Chromatin

Question 25

Small grain like bodies called ……. produce protein inside cells.

Answer 25

Ribosomes

Question 26

Organelles known as …… contain chemicals that break down food particles and old cell parts.

Answer 26

Lysosomes

Question 27

Unlike in an animal cell, the genetic material in a bacterial cell is not found in a …… .

Answer 27

Nucleus