Topic 4 Respiration and metabolism +

Question 1

What does respiration do

Answer 1

Transfers the energy that the cell needs
The energy is used for all living processes

Question 2

What is respiration

Answer 2

The process of transferring energy from the breakdown of glucose

Question 3

Where does respiration occur

Answer 3

Every cell in your body continuously
In the mitochondria

Question 4

Does respiration occur in all living things

Answer 4

Yes

Question 5

Key definition of respiration

Answer 5

The process of transferring energy from glucose which goes on in every cell

Question 6

Is respiration exothermic or endothermic

Answer 6

Exothermic
Transfers energy to the environment

Question 7

How do organisms use the energy transferred by respiration

Answer 7

Buildup larger molecules from smaller ones e.g. proteins from amino acids
In animals is used to allow muscles to contract
In mammals and birds energy is used to keep their body temperature steady in colder surroundings

Question 8

What is metabolism

Answer 8

All the chemical reactions in an organism

Question 9

Examples of larger molecules being made from smaller ones

Answer 9

Lots of small glucose molecules join together in reaction to form starch - Stored molecule in plants, glycogen- Stored molecule in animals and cellulose- Component of plant cell walls

Lipid molecules are made from one molecule of glycerol and three fatty acids

Glucose is combine with nitrate ions to make amino acids which are they made into proteins

Question 10

Examples of large molecules been broken into smaller ones

Answer 10

Glucose is broken down in respiration
respiration transfers energy to power all the reactions In the body that make molecules

Excess protein is broken down in a reaction to produce Urea
Urea is then excreted in urine

Question 11

What is the sum of all the reactions that happen in a cell or body called

Answer 11

Metabolism