biology -cells CB1 p1/2

Question 1

animal cell structure

Answer 1

cell membrane
cytoplasm
nucleus
mitochondria

Question 2

plant cell structure

Answer 2

chloroplast
cell wall
mitochondria
mitochondria

Question 3

bacteria cell structure

Answer 3

DNA
cell membraine
cell wall
flagellum

Question 4

Eukaryotic cells are…

Answer 4

plants and animals

Question 5

Prokaryotic cells are…

Answer 5

bacteria

Question 6

the nucleus is found in

Answer 6

plant and animal cells

Question 7

the mitochondria is found in

Answer 7

plant and animal cells

Question 8

the cell membrane is found in

Answer 8

bacteria ,plants and animals

Question 9

specialized cell -
cillia

Answer 9

-found in trachea and lungs
-moves dust and mucus with tiny hairs

Question 10

specialized cell-
red blood cell

Answer 10

-carry oxygen
-no nucleus meaning larger surface area
-biconcave shape

Question 11

specialized cell-
egg cell

Answer 11

-reproductive system
-haploid nucleus
-thick outer shell which hardens once fused with sperm

Question 12

specialized cell-
sperm

Answer 12

-reproductive system
-haploid nucleus
-head has acrosome to break egg cell wall
-lots of mitochondria so it can swim

Question 13

light microscope
-magnification
-resolution
-color
-uses
-cost

Answer 13

-1500 times
-0.4-0.7 micro meters
-black and white
-see nucleus
-£300

Question 14

electron microscope
-magnification
-resolution
-colour
-uses
-cost

Answer 14

-10,000,000 times
-0.2 nano meters
-colour
-can see mitochondria
-£6000

Question 15

total magnification calculation

Answer 15

image size/real image

Question 16

image size calculation

Answer 16

actual size x magnification

Question 17

what is an enzyme

Answer 17

a biological catalyst that speeds up a reaction

Question 18

what does an enzyme do

Answer 18

help speed up metabolism, or the chemical reactions in our bodies

Question 19

optimum meaning

Answer 19

where an enzyme is most active

Question 20

Name the enzyme that breaks down fat.

Answer 20

lipease

Question 21

Name the enzyme that breaks down protein

Answer 21

protese

Question 22

Name the enzyme that breaks down starch.

Answer 22

amylase

Question 23

What does denaturing mean and what can cause it?

Answer 23

-where a substrate no longer fits the active site
-caused by overheating

Question 24

What 3 things affect enzyme activity?

Answer 24

1.temperature
2.PH
3.concerntration

Question 25

Carbohydrates are made up of…

Answer 25

sugar

Question 26

Proteins are made up of…

Answer 26

amenio acids

Question 27

Fats are made up of…

Answer 27

lipids

Question 28

Diffusion is…

Answer 28

movement from high to low concentration

Question 29

active transport is

Answer 29

low to high concentration
additional energy is needed

Question 30

osmosis is

Answer 30

-high to low concentration
-water molecules
-no energy

Question 31

iodine tests for

Answer 31

starch

Question 32

Biurets’ solution tests for….

Answer 32

amino acids

Question 33

Benedict’s solution tests for…

Answer 33

carbohydrates

Question 34

the emulsion test, tests for….

Answer 34

lipids