Nature and Variety of Life

Question 1

movement

Answer 1

The ability to change location or position

Question 2

Respiration

Answer 2

chemical reaction that takes place in all of our cells

Question 3

sensitivity

Answer 3

the ability to detect and respond to changes in the environment

Question 4

homeostasis

Answer 4

the ability to maintain a constant internal environment

Question 5

growth

Answer 5

increase in mass or volume of an organism

Question 6

reproduction

Answer 6

generation of offspring

Question 7

excretion

Answer 7

removal of toxic waste from the body

Question 8

nutrition

Answer 8

supplies organism with food it needs for respiration, growth, repair and reproduction

Question 9

nucleus

Answer 9

1) contains chromosomes which carry genetic material

2) controls activity of cell

Question 10

cytoplasm

Answer 10

where chemical reactions take place

Question 11

cell surface membrane

Answer 11

controls what enters/leaves the cell - selectively permeable

Question 12

chloroplast

Answer 12

absorb light energy used to make glucose in photosynthesis

Question 13

vacuole

Answer 13

membrane filled with cell sap, stores dissolved sugars, mineral ions and other solutes

Question 14

cell wall

Answer 14

gives structure and rigidity to plant cell, helps keep shape, made of cellulose

Question 15

RBC function

Answer 15

transports oxygen from lungs to tissues where aerobic respiration occurs

Question 16

RBC adaptation

Answer 16

cytoplasm filled with pigment haemoglobin, which helps carry oxygen

Question 17

neurone function

Answer 17

conducts electrical nerve impulses

Question 18

Neurone adaptation

Answer 18

Long and fatty myelin sheath for insulation

Question 19

Root hair cell function

Answer 19

absorbs minerals and water needed for photosynthesis

Question 20

Root hair cell adaptation

Answer 20

large surface area helps increase rate of water absorption

Question 21

bacteria

Answer 21

unicellular, no obvious nucleus

Question 22

Protoctists

Answer 22

unicellular, has a nucleus

Question 23

fungi

Answer 23

multicellular, no chlorophyll, has a cell wall

Question 24

animals

Answer 24

multicellular, has a nucleus, no cell wall

Question 25

plants

Answer 25

multicellular, has a nucleus, has a cell wall, chlorophyll

Question 26

Viruses

Answer 26

no nucleus, parasitic