Anaerobic & Aerobic Respiration - Bioenergetics

Question 1

What is the chemical equation for aerobic respiration? (word)

Answer 1

glucose + oxygen → carbon dioxide+ water

Question 2

What is the chemical equation for aerobic respiration? (symbol)

Answer 2

C₆H₁₂C₆ + 6O₂→6CO₂ +6H₂O

Question 3

Why is anaerobic respiration less effecient and why?

Answer 3

Lactic acid causes muscles to tire and fatigue.
The lactic acid is sent to the liver by the blood from the muscles - but requires oxygen to turn into carbon dioxide and water or convert glucose into glycogen.
Since there is not enough oxygen this is called oxygen debt and causes us to puff and pant after excercise.

Question 4

What is the word equation for anaerboic respiration for plants and some microorganisms?

Answer 4

glucose→ ethanol + carbon dioxide + energy

Question 5

What is the symbol equation for anaerboic respiration for plants and some microorganisms?

Answer 5

C₆H₁₂O₆ → 2C₂H₅OH₂ +energy

Question 6

Is respiration an endothermic or exothermic reaciton?

Answer 6

Exothermic

Question 7

What is anaerobic respiration in yeast cells called?

Answer 7

Fermentation

Question 8

Why does the heart rate increase?

Answer 8

To pump oxygenated blood faster to the muscle cells

Question 9

Why does the breathing rate increase?

Answer 9

Increases amount of oxygen entering the bloodstream

Question 10

What is glucose used for?

Answer 10

• Aerobic respiration
• Converted to glycogen and stored in the liver for late use

Question 11

Explain why the death of a pond snail causes the concentration of co2 to increase

Answer 11

The snail is being decomposed by bacteria, the respiration of bacteria releases co2

Question 12

When do we respire anerobically?

Answer 12

Excercise - shortage of oxygen

Question 13

Why does anerobic respiration release much less energy than aerobic repsiration?

Answer 13

In anerobic respiration, the oxidation of glucose is incomplete

Question 14

What is respiration and what type of reaction is it?

Answer 14

Exothermic - Process of transferring energy from glucose which goes in every cell

Question 15

Give 3 examples of how organisms use the energy transferred by respiration

Answer 15

• To build up larger molecules from smaller ones (like proteins from amino acids)
• Allos muscles to contract to move about
• Keeps body temp steady in cold environment (mammals and birds)

Question 16

What happens to glucose in anaerobic respiration?

Answer 16

Incomplete breakdown of glucose

Question 17

What is cellular respiration

Answer 17

an exothermic reaction which transfers energy from glucose and is continously occuring in living cells

Question 18

How do organisms use their energy?

Answer 18

• To build larger molecules from smaller
• Muscular contraction
• maintain body temp

Question 19

What can lactic acid do?

Answer 19

Damage cells and leads to an oxygen debt