Science

Question 1

What are cells?

Answer 1

Cells are the basic units of structure and function in all living things/organisms.

Question 2

What do cells obtain?

Answer 2

Oxygen, food, and Energy

Question 3

What do cells get rid of?

Answer 3

waste (carbon dioxide)

Question 4

What provide your cells with energy?

Answer 4

food

Question 5

Organism

Answer 5

something that is living

Question 6

What happened in the 1500?

Answer 6

living organisms were classified into two groups plants and animals

Question 7

What was invented in the late 1500 and early 1600?

Answer 7

the microscope

Question 8

Robert Hooke

Answer 8

1665- viewed dead cork (from a tree) under the microscope and called what he saw “cells” because they looked like little rooms.

Question 9

Anton von Leeuwenhoek

Answer 9

mid-1600s) – designed the first microscope and viewed pond water; he called the microorganisms “beasties” or “animalcules” (today bacteria and protists)

Question 10

Matthis Schleden

Answer 10

(1830s) – concluded after looking at plants that “all plants are made of cells.”

Question 11

Theodor Schwann

Answer 11

concluded after looking at all animal tissues that “all animals are made of cells.”

Question 12

Rudolf Virchow

Answer 12

concluded that all cells come from other cells

Question 13

What are the 3 parts of cell theory?

Answer 13

a. All organisms are made up of one or more cells.
b. The cell is the basic unit of structure and function in all living organisms.
c. All cells come from cells.

Question 14

What are the types of microscopes?

Answer 14

Simple Microscope, Compound Light Microscope, and Electron Microscope

Question 15

Simple Microscope

Answer 15

1. Has one lens
2. Example: magnifying lens, glasses

Question 16

Compound Light Microscope

Answer 16

1. Has more than one lens – lenses are located in the eyepiece and revolving nosepiece/objective lenses
2. Uses light as a source
3. Produces a two-dimensional image
4. Magnification

Question 17

Magnification

Answer 17

the change in apparent size of the object

Question 18

How do you the total magnification?

Answer 18

The powers of the eyepiece times the power of the objective lens

Question 19

What are the 3 lens?

Answer 19

High Power Objective lens, Low Power Objective lens, and scanner.

Question 20

Electron Microscope

Answer 20

1. Uses a beam of electrons in a vacuum (no air) as its source 2. Produces a three-dimensional image 3. Can magnify thousands/millions of times

Question 21

what are the types of electron microscopes?

Answer 21

SEM- Scanning Electron Microscope TEM- Transmission Electron Microscope

Question 22

What are the parts of the microscope?

Answer 22

Body Tube, Revolving nose piece, Low Power Objective lens, high power Objective lens, stage clips, diaphragm, eyepiece lens, coarse adjustment knob, fine adjustment knob, arm, stage, light source, base, and scanner.

Question 23

Body tube

Answer 23

separates the eyepiece lens from the objective lens

Question 23

lower power objective lens

Answer 23

magnifies about 10x

Question 24

Revolving nose piece

Answer 24

holds the lower power objective lens and high power objective lens; allows the lens to rotate for viewing

Question 24

high power objective lens

Answer 24

magnifies about 40x

Question 25

stage clips

Answer 25

holds the slide in place

Question 26

diapharm

Answer 26

controls the amount of light passing through the opening of the stage

Question 27

eyepiece lens

Answer 27

contains a lens that magnifies about10x

Question 28

coarse adjustment knob

Answer 28

moves the stage to focus an image

Question 29

fine adjustment knob

Answer 29

moves the stage slightly to adjust the image

Question 30

arm

Answer 30

supports the body tube

Question 31

stage

Answer 31

supports the slide being used

Question 32

light source

Answer 32

projects or reflects light upwards through the diapharm

Question 33

base

Answer 33

supports the microscope

Question 34

scanner

Answer 34

magnifies 3x or 4x and gives full image