Respiration

Question 1

What is respiration

Answer 1

Respiration is the breakdown of glucose into energy

Question 2

Energy released is turned into a chemical called what

Answer 2

Adenosine triphosphate (ATP)

Question 3

When the end phosphate of ATP breaks pff what is made

Answer 3

Adenosine diphosphate with an inorganic phosphate (ADP + Pi)

Question 4

Respiration uses what

Answer 4

Enzymes

Question 5

ATP and ADP + Pi cycle

Answer 5

ATP - energy released - ADP + Pi - energy required - back to ATP

Question 6

Why does the body need energy

Answer 6

Muscle contraction
Transmition of nerve impulses
Cell division
Protein synthesis 
Active transport

Question 7

Stage one of aerobic respiration

Answer 7

Glycolysis occurs in the cytoplasm which doesnt require oxygen
Glucose is turned into pyruvate and 2ADP + Pi is turned into 2ATP

Question 8

Stage two of aerobic respiration

Answer 8

Only occurs if oxygen is present in the mitochondria

Pryruvate is turned into carbon dioxide and lots of ATP is produced

Question 9

Why do muscles and sperm have a high number of mitochondria

Answer 9

Because they require more energy

Question 10

What is a respirometer used for

Answer 10

A respirometer is used to measure the rate of respiration

Question 11

What is a control used for

Answer 11

Comparisson

Question 12

What is fermentation

Answer 12

Fermentation involves the partial breakdown of glucose to release energy in the absence of oxygen

Question 13

What happens in fermentation of animals

Answer 13

Glycolysis takes place as normal

Then the pryruvate turns into lactate and when oxygen becomes available the lactate turns back into pyruvate

Question 14

What happens in fermentation in plant and yeast cells

Answer 14

Glycolysis takes place as normal

Then pyruvate turns into carbon dioxide and ethanol