Respiration

Question 1

What is the process of respiration?

Answer 1

The process of converting glucose and oxygen into energy, carbon dioxide, and water.

Question 2

What is the chemical equation for aerobic respiration?

Answer 2

C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (ATP)

Question 3

True or False: Respiration occurs only in the presence of oxygen.

Answer 3

False

Question 4

What type of respiration occurs when oxygen is absent?

Answer 4

Anaerobic respiration

Question 5

Fill in the blank: The primary energy currency of cells is _____

Answer 5

ATP

Question 6

What is the role of mitochondria in respiration?

Answer 6

Mitochondria are the sites of aerobic respiration and ATP production.

Question 7

What by-product is produced during anaerobic respiration in yeast?

Answer 7

Ethanol and carbon dioxide

Question 8

What process do muscle cells undergo when oxygen is low?

Answer 8

Lactic acid fermentation

Question 9

What is the main difference between aerobic and anaerobic respiration?

Answer 9

Aerobic respiration requires oxygen, while anaerobic respiration does not.

Question 10

True or False: Anaerobic respiration produces more energy than aerobic respiration.

Answer 10

False

Question 11

In which part of the cell does glycolysis occur?

Answer 11

In the cytoplasm

Question 12

What is glycolysis?

Answer 12

The breakdown of glucose into pyruvate, producing a small amount of ATP.

Question 13

True or False: Lactic acid is a by-product of anaerobic respiration in animals.

Answer 13

True

Question 14

What is fermentation?

Answer 14

A metabolic process that converts sugar to acids, gases, or alcohol in the absence of oxygen.

Question 15

What is the main purpose of respiration?

Answer 15

To produce ATP, which provides energy for cellular processes.

Question 16

Which organism is commonly used in fermentation experiments?

Answer 16

Yeast

Question 17

What are the two main types of fermentation?

Answer 17

Alcoholic fermentation and lactic acid fermentation

Question 18

True or False: Respiration and breathing are the same process.

Answer 18

False

Question 19

What is the overall efficiency of aerobic respiration in terms of ATP produced?

Answer 19

Approximately 36 to 38 ATP molecules per glucose molecule.

Question 20

What is the significance of the ATP/ADP cycle?

Answer 20

It allows cells to store and release energy as needed.

Question 21

Fill in the blank: The energy released during respiration is used for _____

Answer 21

biological processes.

Question 22

What role do enzymes play in respiration?

Answer 22

Enzymes catalyze the biochemical reactions involved in respiration.

Question 23

True or False: All living organisms perform respiration.

Answer 23

True

Question 24

What is the main substrate used in cellular respiration?

Answer 24

Glucose

Question 25

Fill in the blank: The _____ is the organ that facilitates gas exchange in humans.

Answer 25

lungs

Question 26

What is anaerobic respiration's effect on muscle performance?

Answer 26

It can lead to fatigue and muscle cramps due to lactic acid buildup.

Question 27

What is the purpose of the respiratory system in relation to respiration?

Answer 27

To intake oxygen and expel carbon dioxide.

Question 28

How do plants perform respiration?

Answer 28

Plants perform respiration using the glucose produced during photosynthesis.

Question 29

In which phase of respiration is carbon dioxide produced?

Answer 29

During the Krebs cycle and the electron transport chain.

Question 30

What is the primary organelle involved in aerobic respiration?

Answer 30

Mitochondria

Question 31

What is the significance of the proton gradient in respiration?

Answer 31

It drives ATP synthesis during oxidative phosphorylation.

Question 32

True or False: Only animals undergo aerobic respiration.

Answer 32

False

Question 33

What happens to lactic acid in the body after exercise?

Answer 33

Lactic acid is converted back to glucose in the liver.

Question 34

What are the two stages of aerobic respiration?

Answer 34

Glycolysis and oxidative phosphorylation.

Question 35

What is the main source of energy for cellular activities?

Answer 35

ATP

Question 36

What is the difference between respiration and photosynthesis?

Answer 36

Respiration releases energy from glucose, while photosynthesis stores energy in glucose.

Question 37

True or False: The products of respiration are the reactants of photosynthesis.

Answer 37

True

Question 38

What is the role of glucose in respiration?

Answer 38

Glucose is the primary fuel for cellular respiration.

Question 39

Fill in the blank: The energy released during respiration is stored in the form of _____

Answer 39

ATP

Question 40

How many molecules of carbon dioxide are produced from one molecule of glucose during aerobic respiration?

Answer 40

Six molecules of carbon dioxide

Question 41

What is the difference between aerobic and anaerobic respiration in terms of energy yield?

Answer 41

Aerobic respiration yields more energy than anaerobic respiration.

Question 42

True or False: Respiration occurs in all living cells.

Answer 42

True

Question 43

What is the primary waste product of respiration?

Answer 43

Carbon dioxide

Question 44

What is the role of the respiratory system in maintaining homeostasis?

Answer 44

It regulates oxygen and carbon dioxide levels in the blood.

Question 45

Fill in the blank: The energy stored in ATP can be released for cellular work by _____

Answer 45

breaking the high-energy phosphate bond.

Question 46

What is the main advantage of aerobic respiration over anaerobic respiration?

Answer 46

Higher energy yield.

Question 47

What is the importance of cellular respiration for living organisms?

Answer 47

It provides the energy required for all cellular processes.

Question 48

True or False: Only multicellular organisms can perform respiration.

Answer 48

False

Question 49

What is produced during alcoholic fermentation?

Answer 49

Ethanol and carbon dioxide

Question 50

How is energy from glucose released during respiration?

Answer 50

Through a series of chemical reactions that break down glucose.

Question 51

What is the function of the diaphragm in respiration?

Answer 51

The diaphragm contracts and relaxes to facilitate breathing.

Question 52

True or False: Respiration can occur without cellular respiration.

Answer 52

False

Question 53

What is the role of carbon dioxide in photosynthesis?

Answer 53

It is used to produce glucose.

Question 54

Fill in the blank: The _____ is the site of gas exchange in the lungs.

Answer 54

alveoli

Question 55

What is the relationship between respiration and metabolism?

Answer 55

Respiration is a key part of metabolism, providing energy for metabolic processes.

Question 56

What is the primary role of the lungs in respiration?

Answer 56

To facilitate the exchange of oxygen and carbon dioxide.

Question 57

True or False: Anaerobic respiration is less efficient than aerobic respiration.

Answer 57

True

Question 58

What is the fate of glucose in anaerobic conditions?

Answer 58

It is partially broken down to produce energy, resulting in by-products like lactic acid or ethanol.

Question 59

Fill in the blank: The process of converting glucose into energy is known as _____

Answer 59

respiration

Question 60

What is the significance of the respiratory system's structure?

Answer 60

It maximizes surface area for gas exchange.

Question 61

What is the main purpose of respiration in living organisms?

Answer 61

To provide energy for cellular activities.

Question 62

How does respiration relate to photosynthesis?

Answer 62

Respiration releases energy from glucose, while photosynthesis stores energy in glucose.