B1

Question 1

Calculating the size of an object

Answer 1

Image size ÷ magnification x size of real object

Question 2

Nucleus

Answer 2

Controlls all the activities of cell and is surrounded by the nuclear membrane. It contains genes on the chromosones that carry instructions for making proteins needed to build new cells or organisms.

Question 3

Cytoplasm

Answer 3

A liquid gel in which organelles are suspended and where most of the chemical reactions needed for life take place.

Question 4

Cell membrane

Answer 4

Controlls what goes in and out of a cell

Question 5

Mitochondria

Answer 5

Structures in cytoplasm where aerobic resparation takes place, releasing energy for the cells.

Question 6

Ribosomes

Answer 6

Where protein synthesis takes place

Question 7

Nerve cells

Answer 7

Nerve cells are specialised to carry electrical impulses around the body of an animal

Question 8

Sperm cell

Answer 8

Sperm cells are usually released a long way from the egg they are going to fertilise. They Contain genetic information from the male parent.

Question 9

Muscle cells

Answer 9

What are cells are specialised cells that can contract and relax

Question 10

Root hair cells

Answer 10

They help plants take up water and mineral ions more efficiently

Question 11

Photosynthesis cells

Answer 11

They are usually on the outer layers of the stem of a plant so they can they absorb as much light as possible

Question 12

Xylem cells

Answer 12

Xylem is the transport tissue in plants that carries water in the mineral ions from roots to the highest leaves and shoots

Question 13

Phloem cells

Answer 13

Phloem Is the specialised transport tissue that carries the food made by photosynthesis around the body of the plant

Question 14

What do all eukaryotic cells have

Answer 14

Cell membrane, cytoplasm and genetic material that is in a nucleus

Question 15

What does a Prokaryotic consist of

Answer 15

Cytoplasm and a cell membrane surrounded by a cell wall

Question 16

What does an Animal cell contain

Answer 16

The nucleus, cytoplasm, cell membrane, mitochondria, and ribosomes

Question 17

What does a Plant cell Contain

Answer 17

A nucleus, cytoplasm, cell membrane, mitochondria, ribosomes and a cell wall

Question 18

What is the function of nerve cells?

Answer 18

Transmits electrical impulses.

Question 19

What is the function of muscle cells

Answer 19

Muscle cells are specialised to contract quickly to move bones or simply to squeeze therefore causing movement.

Question 20

What is the function of xylem cells in a plant

Answer 20

They are specialised to transport water and mineral ions up the plant from the roots to the shoots.

Question 21

What is the function of pholem cells in a plant

Answer 21

Transports food (by translocation) from the leaves to other parts of the plant.

Question 22

What is the function of root hair cells in a plant?

Answer 22

They are specialised to absorb water by osmosis and mineral ions by active transport from the soil.