Repiration N5 U1 P6

Question 1

What is respiration

Answer 1

Process of glucose releases energy
Chemical energy stored in glucose must be released by all cells through a series of enzyme controlled reactions called respiration
Energy released is used to generate ATP
All cells require energy- glucose is the main source of energy

Question 2

What can ATP be used for

Answer 2

Muscle cell contraction
Cell division
Protein synthesis
Transmission of nerve impulses
Active transport

Question 3

Higher energy requirement requires more-

Answer 3

Mitochondria

Question 4

First stage of respiration

Answer 4

First stage occurs in the cytoplasm where glucose is broken down to two molecules of pyruvate, releasing enough energy to yield two molecules of ATP

Question 5

Second stage of respiration- aerobic respiration

Answer 5

If oxygen is present aerobic respiration takes place in the mitochondria
Each pyruvate molecule is broken down to carbon dioxide and water, releasing a lot of energy yielding a large number of ATP

Question 6

Word summary of aerobic respiration

Answer 6

Glucose+ oxygen-> carbon dioxide+ water+ energy(ATP)

Question 7

Second stage of respiration -fermentation in animal cells

Answer 7

In the absence of oxygen the fermentation pathway takes place
In animal cells, each pyruvate molecule are converted to lactate, yielding two molecules of ATP from splitting glucose

Question 8

Word summary for fermentation in animal cells

Answer 8

Glucose->lactate+ energy

Question 9

Second stage of respiration- fermentation in plant cells

Answer 9

In the absence of oxygen, the fermentation pathway takes place
In plant, yeast/fungal cells pyruvate converts to carbon dioxide and ethanol, which yields two molecules of ATP from breakdown of glucose

Question 10

Word summary for fermentation in plant cells

Answer 10

Glucose-> carbon dioxide+ ethanol+ energy