Year 9 Recap

Question 1

What does MRS GRENC stand for?

Answer 1

Movement — E.g. Ability to change position

Question 2

What does MRS GRENC stand for?

Answer 2

Respiration — E.g. Release of energy from food

Question 3

What does MRS GRENC stand for?

Answer 3

Sensitivity — E.g. Ability to detect changes in the environment and respond

Question 4

What does MRS GRENC stand for?

Answer 4

Growth — E.g. Increasing in size

Question 5

What does MRS GRENC stand for?

Answer 5

Reproduction — E.g. Produce offspring

Question 6

What does MRS GRENC stand for?

Answer 6

Excretion — E.g. Removal of harmful waste from cells

Question 7

What does MRS GRENC stand for?

Answer 7

Nutrition — E.g. Obtains food

Question 8

What does MRS GRENC stand for?

Answer 8

Control — E.g. Ability to keep internal conditions constant

Question 9

How many living things kingdoms are there?

Answer 9

Five — Animals, Plants, Fungi, Protoctists, Prokaryotes

Question 10

What is the difference between eukaryotes and prokaryotes?

Answer 10

Eukaryotes have a nucleus and are often multicellular

Prokaryotes have no nucleus and are always unicellular

Question 11

What are the levels of organisation in an organism? (Smallest to largest)

Answer 11

Organelles — Cells — Tissues — Organs — Organs Systems — Organism

Question 12

What is an organelle? Give an example

Answer 12

A membrane-bound structure within a cell that performs a certain function — E.g. Cell wall

Question 13

What is a cell? Give an example

Answer 13

The smallest unit of life made up of a group of organelles — E.g. Animal cell

Question 14

What are tissues? Give an example

Answer 14

A group of specialised cells that have a similar function — E.g. Muscle tissue

Question 15

What is an organ system? Give an example

Answer 15

Groups of organs that carry out a particular function — E.g. Nervous system

Question 16

What is an organism? Give an example

Answer 16

All the organ systems working together in a living ‘thing’

Question 17

What organelles does a plant cell contain?

Answer 17

Nucleus — Mitochondria
Cell wall — Cell membrane
Chloroplasts — Cytoplasm
Ribosomes — (Permanent) vacuole

Question 18

What organelles does an animal cell contain?

Answer 18

Nucleus — Ribosomes
Mitochondria — Cytoplasm
Cell membrane

Question 19

What is the calculation for magnification?

Answer 19

Magnification = Image size / Actual size

Question 20

What are the steps for calculating magnification?

Answer 20

1. Measure the image size using a ruler in mm
2. Convert mm into micrometers (μm)
3. Divide answer by actual size

Question 21

Are fungi unicellular or multicellular? What is the exception?

Answer 21

Fungi are multicellular, except yeasts which is unicellular

Question 22

What thread-like structures do Fungi create? What does this form?

Answer 22

They create hyphae which, as a group, forms mycelium

Question 23

What are Fungi cell walls made of?

Answer 23

Chitin

Question 24

How do Fungi store carbohydrate?

Answer 24

As glycogen (same as animals)

Question 25

How do Fungi feed?

Answer 25

They feed saprotrophically

Question 26

How do Fungi feed?

Answer 26

They feed saprotrophically