Discovering Cells Flashcards Preview

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Flashcards in Discovering Cells Deck (27):
1

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

450.
because you multiply 15x30.

2

How does magnification occur in an electron microscope?

An electron beam creates the image.

3

What are the three parts to cell theory?

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

4

How does the lens of a light microscope work?

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

5

What does the term RESOLUTION refer to?

How sharp an image is.

6

What is the function of the cell membrane?

To control what enters and leaves the cell

7

Which organelle is the control center of the cell?

Nucleus

8

What does the mitochondria do?

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

9

Unlike Hooke, Leeuwenhoek observed cells that were.....

Alive.

10

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

Bacteria do NOT have a nucleus.

11

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

Golgi bodies.

12

Specialized cells are found only in.....

Many-celled organisms.

13

What is the function of the cell wall?

To protect and support the cell.

14

Unlike the cell wall, the cell membrane...

Is found in all cells

15

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

The vacuole.

16

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

Lysosomes

17

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

Cells.

18

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

Compound

19

A microscope allowed Hooke to see "tiny rectangular rooms" which he called ....... .

Cells.

20

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

Function

21

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

Cells.

22

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

Resolution.

23

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

Convex

24

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

Chromatin

25

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

Ribosomes

26

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

Lysosomes

27

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

Nucleus