Respiration

Question 1

Energy

Answer 1

Something has energy if it has the ability to make something happen when that energy is transferred.

Question 2

Respiration

Answer 2

The process of living things in which oxygen is used to release the energy in food.

Question 3

Glucose

Answer 3

A simple sugar molecule

Question 4

Aerobic respiration

Answer 4

Respiration that involves oxygen.

Question 5

Reactant

Answer 5

The starting substance in a chemical reaction.

Question 6

Photosynthesis

Answer 6

The process by which energy from sunlight, carbon dioxide and water are used by green plants to produce glucose and oxygen.

Question 7

Product

Answer 7

A substance formed from a chemical reaction.

Question 8

Germinating

Answer 8

Beginning to grow into a plant from a seed

Question 9

Mitochondria

Answer 9

The structures in a cell that produce energy.

Question 10

Membrane

Answer 10

The layer around the cell that control substances entering and leaving the cell.

Question 11

Enzymes

Answer 11

A substance that enables a chemical process in a living organism.

Question 12

Digestive system

Answer 12

A group of organs that together enable the digestion of food

Question 13

Breathing system

Answer 13

Takes oxygen into the body and passes carbon dioxide out.

Question 14

Circulatory system

Answer 14

The heart and blood vessels that transport essential substances around the body in blood.

Question 15

Phloem

Answer 15

A tissue made up of long tubes that transport glucose made in leaves of a plant to other parts.

Question 16

Stomata

Answer 16

Tiny pores on the underneath surface of a leaf through which gases can move in and out.

Question 17

Lactic acid

Answer 17

A substance produced in anaerobic respiration which builds during vigorous exercise and causes an aching or burning feeling in the muscles.

Question 18

Oxygen debt

Answer 18

The oxygen needs to break down lactic acid produced as a result of vigorous exercise.

Question 19

Glycogen

Answer 19

A storage molecule formed from a chain of Lucas’s units and often stored in the liver.

Question 20

Fermentation

Answer 20

Type of anaerobic respiration that produces ethanol and carbon dioxide

Question 21

Microbe

Answer 21

Tiny organism like bacteria, fungi and viruses that can only be seen by a microscope

Question 22

Yeast

Answer 22

A unicellular (single-celled) fungus

Question 23

Brewing

Answer 23

Cereal grains are soaked in water and fermented with yeast.

Question 24

Fossil fuel

Answer 24

Coal, natural gas and oil that were formed from the compressed remains of plants and other organisms that died millions of years ago.

Question 25

Dependent variable

Answer 25

The variable that is measured in an investigation.

Question 26

Catalyst

Answer 26

Substance that speeds up a chemical reaction