Cells

Question 1

what’s the eyepiece?

Answer 1

contains lens that magnifies

Question 2

what’s the coarse adjustment knob?

Answer 2

moves stage up or down to focus image

Question 3

fine adjustment knob?

Answer 3

brings object to sharper focus

Question 4

revolving nosepiece?

Answer 4

holds three objective lenses

Question 5

objective lenses?

Answer 5

provides different strengths of magnification (10,100,1000)

Question 6

stage?

Answer 6

supports slide and holds object wanting to view.

Question 7

stage clips?

Answer 7

holds slide firmly on stage

Question 8

diaphragm?

Answer 8

different sized holes that let different amounts of light pass through object of view

Question 9

lamp?

Answer 9

supplies light through object in view

Question 10

arm?

Answer 10

allows to carry microscope securely

Question 11

base?

Answer 11

foundation for microscope

Question 12

what is fibre optics?

Answer 12

technology that surgeons use to view inside and outside the body

Question 13

what is a cell?

Answer 13

smallest known unit of life

Question 14

which is correct;

1. organs, cells, tissue, organ system?
2. cells, organs, tissue, organ system?
3. cells, tissue, organ, organ system?
4. organ system, organ, cell, tissue?

Answer 14

3 - cell, tissue, organ, organ system

Question 15

what part of the cell is the thin line that surrounds the cell?

Answer 15

cell membrane

Question 16

what is the rigid frame-like covering the outside part of the cell?

Answer 16

cell wall - only plants have it.

Question 17

what is the cytoplasm?

Answer 17

liquid in the cell, grainy-looking bits.

Question 18

what is the control centre of the cell?

Answer 18

the nucleus.

Question 19

what is a vacuole?

Answer 19

clear-liquid space. collects waste

Question 20

what is known as the powerhouse of the cell?

Answer 20

mitochondria

Question 21

what creates photosynthesis?

Answer 21

chloroplasts - only in plants

Question 22

what is the purpose of a Golgi body and how do you identify it?

Answer 22

it is essential to life and it is string-like

Question 23

what is the er? endoplasmic reticulum

Answer 23

it attaches to the nucleus to transport thing in and out of the nucleus.

Question 24

what digests the unwanted things of the cell?

Answer 24

lysosomes

Question 25

what is the purpose of the ribosomes?

Answer 25

make proteins for the cell.

Question 26

what are the two organelles that the animal cell does not have?

Answer 26

cell wall

chloroplasts

Question 27

what’s the difference in shape of the two cells?

Answer 27

animal is loose and circular and plant is square

Question 28

why is the plant cell square?

Answer 28

the rigid form of the cell wall.

Question 29

what is the smallest kind of organism known to man?

Answer 29

mycoplasma

Question 30

what is a unicellular organism?

Answer 30

made up of only one kind of cell.

Question 31

what is a multicellular organism?

Answer 31

organisms are made up of two or more cells.

Question 32

what is the name of the largest unicellular organism on earth?

Answer 32

the acetabularia

Question 33

what is diffusion?

Answer 33

movement of particles from and area of low concentration to an area of high concentration.

Question 34

what’s the difference between osmosis and diffusion?

Answer 34

osmosis is the diffusion of water, while diffusion is anything.

Question 35

what is selectively permeable?

Answer 35

only certain things can go through

Question 36

what’s a compound light microscope?

Answer 36

a microscope that has two or more lenses as a light source