B1

Question 1

Animal cell structure and functions

Name all the cell features common to animal cells

Answer 1

Nucleus, cytoplasm,cell membrane, mitochondria and ribosomes

Question 2

Nucleus function

Answer 2

Contains genetic materials which control activities of the cell

Question 3

Cytoplasm function

Answer 3

Where most of the chemical reactions happen. It contains enzymes.

Question 4

Cell membrane

Answer 4

Controls what goes in and out

Question 5

Ribosomes

Answer 5

Where protiens are made in the cell

Question 6

PLANT CELLS

True or false: plant cells contain the same cells and animal

Answer 6

TRUE. however have some of there own: Cell wall, permanent vacuole,chloroplasts

Question 7

Function of cell wall

Answer 7

Supports cell and strengthens it

Question 8

Function of chloroplasts

Answer 8

Where photosynthesis occurs, they contain a subsentnce called chlorophyll which aborbs light needed for photosynthesis

Question 9

Light microscopes magnify to what, compared to electron magnify?

Answer 9

x2000 light

x2,000,000 electron

Question 10

What is the equation for magnification and its re-arrangments

Answer 10

MAGNIFICATION= IMAGE SIZE
————-
REAL SIZE.

(MxR=I)(I/M=R)

Question 11

Are eukaryotic cells,cells like animal or plant cells/ or cells like bacteria

Answer 11

Animal/plant

This is the opposite to PROKARYOTIC CELLS (eg bacteria)

Question 12

What are animal and plant cells specialised to function within ?

Answer 12

Within a tissue, organ systems and the whole organism

Question 13

Examples of animal cells and its specialised

Answer 13

Sperm cells- reproduction

Muscle cells- contraction

Question 14

Examples of plant cells and its specialised

Answer 14

Root hair cells- absorb water and minerals

Phloem and xylem - transporting substances

Question 15

What is diffusion

Answer 15

The spreading out of particles from an area of high concentraction on am area of low concentraction

Question 16

What is the rate of diffusion affected by

Answer 16

The difference of concentration,temp and available surface area

Question 17

Diffusion happens in solutions and gasses

What can Dissolved substances like glucose and gases like oxygen,CO2 do?

Answer 17

Move in and out of cells by diffusion.

Question 18

What Is osmosis

Answer 18

Special case of diffusion- movement of water molecules across partially permamble memebrane from region on higher water concentration to low.

Question 19

Investigating osmosis in plant cell practical steps: use page 18 of cgp.

Answer 19

:)

Question 20

What does active transport do?

Answer 20

Moves substances from a more dilute solution to a more concentrated solution.

Question 21

Active transport uses energy from what and why?

Answer 21

Energy released from food in respiration to provide energy required

Question 22

What does active transport allow plant root hair cells to absorb

Answer 22

Absorb mineral ions required for healthy growth from very dilite solutions in soil to against a concentration gradient.

Question 23

Exchanging surface use page…

Answer 23

20