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Respiration

Respiration

Assessment

Presentation

Biology

11th - 12th Grade

Hard

Created by

Joseph Anderson

FREE Resource

5 Slides • 13 Questions

1

Cellular respiration

by Roy Mathews

​Glucose + oxygen --> carbon dioxide + water + ATP

2

​Cellular respiration is the process that releases energy in glucose to make ATP, the molecule that powers all the cell activities.

​Cellular respiration involves many chemical reactions. These can be grouped into three stages:

GLYCOLYSIS

KREBS CYCLE (CITRIC ACID CYCLE)

​ELECTRON TRANSFER CHAIN

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3

GLYCOLYSIS

  • ​Glycolysis occurs in the cytoplasm of the cell.

  • ​Each glucose molecule is broken down into 2 pyruvate molecules.

  • Two molecules of ATP are produced in the breakdown.

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4

​Krebs cycle (Citric acid cycle)

  • ​Occurs in the matrix of the mitochondria.

  • ​As pyruvate passes around this cycle, the rearrangement of atoms occurs. CO2 and H atoms are produced.

  • ​CO2 is a waster that diffuses out of the mitochondria.

  • ​Hydrogen atoms are picked up by a carrier molecule (NAD)

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5

​Electron transfer chain

  • ​Occurs in the inner membrane of the mitochondria (cristae)

  • ​Hydrogen atoms are ionised and their high-energy electrons are passed along a series of acceptor molecules.

  • ​As the electrons are bounced along the electron transfer chain, their energy is used to form ATP from ADP.

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6

Multiple Choice

Two substances needed for aerobic respiration are:

1

Glucose and water

2

Glucose and carbon dioxide

3

Glucose and oxygen

4

water and carbon dioxide

7

Multiple Choice

Structures that increase the surface of the inner membrane of the mitochondria are:

1

cristae

2

villi

3

microvilli

4

hair roots

8

Multiple Choice

Part of the cell where glycolysis, the first stage of cellular respiration occurs is:

1

cytoplasm

2

matrix of the mitochondria

3

cristae of mitochondria

4

endoplasmic reticulum

9

Multiple Choice

Place where Krebs cycle occurs in the cell is:

1

cytoplasm

2

matrix of the mitochondria

3

cristae of mitochondria

4

the outer membrane of mitochondria.

10

Multiple Choice

Cell organelle where most reactions of cellular respiration occurs is the:

1

ribosome

2

mitochondria

3

lysosome

4

Gogi apparatus

11

Multiple Choice

The electron transfer chain, the final stage of cellular respiration occurs in the:

1

cristae of mitochondria

2

matrix of mitochondria

3

outer membrane of mitochondria

4

the cytoplasm of the cell.

12

Multiple Choice

What stage of cellular respiration produces the most number of ATP?

1

Glycolysis

2

Krebs cycle

3

Electron transfer chain

4

anaerobic respiration

13

Multiple Choice

What statement is NOT correct about mitochondria?

1

It has a double membrane

2

The matrix contains several enzymes

3

Substances cannot diffuse through its membranes.

4

Cristae increase the surface area of inner membrane.

14

Multiple Choice

How many molecules of ATP are created from one molecule of glucose by aerobic respiration?

1

38

2

2

3

30

4

20

15

Multiple Choice

What substance is not needed for anaerobic respiration?

1

Carbon dioxide

2

oxygen

3

glucose

4

enzymes

16

Multiple Choice

What waste material is produced by both aerobic and anaerobic respiration?

1

carbon dioxide

2

lactic acid

3

ethanol

4

ATP

17

Multiple Choice

One of the reasons why large numbers of mitochondria are found in muscle cells is because:

1

muscles get lots of oxygen

2

muscle cells require lots of energy.

3

muscle cells can tolerate high levels of CO2

4

muscle cells are larger than other body cells.

18

Multiple Choice

Cells that carry out active transport contain large numbers of mitochondria because:

1

Active transport requires ATP

2

Active transport happens in the mitochondria

3

the double membranes of mitochondria are not permeable

4

active transport uses CO2 produced during respiration.

Cellular respiration

by Roy Mathews

​Glucose + oxygen --> carbon dioxide + water + ATP

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