Paper 1

Question 1

5 parts of animal cell

Answer 1

Nucleus 
Cytoplasm
Cell membrane 
Mitochondria 
Ribosomes

Question 2

3 parts of plant cell

Answer 2

Cell wall
Permanent vacuole
Chloroplast

Question 3

Nucleus

Answer 3

Contains genetic material that controls activities of cell

Question 4

Cytoplasm

Answer 4

Has enzymes and where most chemical reactions take place

Question 5

Cell membrane

Answer 5

Holds cell together and controls what goes in and out

Question 6

Mitochondria

Answer 6

Where reactions for aerobic respiration take place

Question 7

Ribosomes

Answer 7

Where proteins are made

Question 8

Cell wall

Answer 8

Made of cellulose and and strengthens cell

Question 9

Permanent vacuole

Answer 9

Contains cell sap ( sugar and salt solution)

Question 10

Chloroplasts

Answer 10

Where photosynthesis takes place

Question 11

Plasmids

Answer 11

Small rings of DNA

Question 12

4 ways sperm cell specialised

Answer 12

Long tail and streamlined head - swim fast
Enzymes - help penetrate egg
Mitochondria - provide energy

Question 13

2 ways nerve cells are specialised

Answer 13

Long - cover more distance

Branched connections - connect to other cells to form a network

Question 14

2 ways muscle cells are specialised

Answer 14

Long - space to contract

Lots of mitochondria- generate energy needed for contraction

Question 15

2 ways phloem/xylem are specialised

Answer 15

Hollow - more space

Few sub cellular structures - more space for substances to flow through

Question 16

Stem cells

Answer 16

Undifferentiated and can turn into any type of cell

Question 17

Required practical 1: preparing light microscope

Answer 17

1) drop water on clean slide
2) use tweezers to put tissue into water on slide
3) add iodine solution
4) place cover slide on top
5) clip slide onto stage