B2 Cells

Question 1

Nucleus

Answer 1

contains chromosomes, which carry genetic info, as to control cell activity. Contains DNA

Question 2

Cytoplasm

Answer 2

where many chemical reactions takes place. Supports many small organelles

Question 3

Cell membrane

Answer 3

semi permeable to control what enters and leaves the cell. Holds the cell together

Question 4

Large vacuole

Answer 4

contains water and dissolved substances together called cell sap. Gives cell support, making it firm and rigid.

Question 5

Cellulose cell wall

Answer 5

Made up of cellulose, gives strucutral support to the cell

Question 6

Chloroplast

Answer 6

Contains chlorophyll which absorbs light energy for photosynthesis

Question 7

Mitochondria

Answer 7

where cellular respiration happens. Produces energy

Question 8

Transmission electron microscope

Answer 8

used to see extremely small organelles inside the cell.

Question 9

Scanning electron microscope

Answer 9

used to see surface features of a cell or organism.

Question 10

What is passed through the specimen of a light microscope so you can see it?

Answer 10

light rays

Question 11

What is passed through the specimen of an electron microscope so you can see it?

Answer 11

electrons

Question 12

In what resolution is a light microscope

Answer 12

low res

Question 13

In what resolution is an electron microscope

Answer 13

high res

Question 14

Maximum magnification of a light microscope

Answer 14

X1500

Question 15

Maximum magnification of an electron microscope

Answer 15

X500 000

Question 16

Coarse focusing wheel

Answer 16

focuses light, for the initial focusing of light

Question 17

Fine focusing wheel

Answer 17

For the final adjustments of focus

Question 18

Arm of microscope

Answer 18

Connects stage and objective lens

Question 19

Clip of microscope

Answer 19

Holds the slide in place

Question 20

Base of microscope

Answer 20

keeps microscope steady and horizontal

Question 21

Eyepiece lens

Answer 21

for magnification of the specimen

Question 22

Objective lens

Answer 22

for the magnification of the specimen

Question 23

Stage of microscope

Answer 23

where the specimen/ slide is placed

Question 24

Condenser in microscope

Answer 24

focuses light on specimen

Question 25

Mirror in microscope

Answer 25

reflects light onto specimen

Question 26

Magnification equation

Answer 26

Magnification= image size/actual size

Question 27

Diffusion

Answer 27

the net movement of molecules from a region of high concentration to a region of low concentration, down a concentration gradient, as a result of their random movement

Question 28

Osmosis

Answer 28

Diffusion of water molecules from a region of their higher concentration (dilute solution) to a region of their lower concentration (concentrated solution) through a partially permeable membrane

Question 29

What happens when water moves in/out of an animal cell?

Answer 29

IN: it burts OUT: it becomes shrivelled

Question 30

What happens when water moves in/out of a leaf cell?

Answer 30

IN: the sap vacuole pushes out against the cell wall and the cell becomes turgid OUT: the sap vacuole shrinks and the cell becomes flaccid