Aerobic Respiration

Q.

Write two different ways in which glucose is oxidized to provide energy in the human body. Write the products formed in each case.

Q. What is aerobic and anaerobic respiration?

Q.

Explain the process of breakdown of glucose in a cell

(i) in presence of oxygen

(ii) in absence of oxygen

Q.

An athlete breathes faster and deeper than usual after finishing a race.

1. True

2. False

Q. When air is exhaled inside a test tube containing limewater, the limewater in it turns milky. What does this indicate?

1. The air that we blow is dirty.
2. The air that we blow contains oxygen.
3. The air that we blow contains carbon dioxide.
4. Lime water is always milky.

Q.

The optimum temperature for photosynthesis to occur is ___ to ___.

Q. What is aerobic respiration?

Q.

During aerobic respiration, more energy is produced than in anaerobic respiration.

1. True
2. False

Q. During exercise, the heart rate increases to

1. Supply more lactic acid to the muscles for anaerobic respiration
2. Supply more oxygen and glucose to the respiring cells
3. Keep up with the pulse rate
4. Keep down the pulse rate

Q. In the presence of oxygen, cells breakdown _____ from the food to produce water, carbon dioxide, and energy.

1. proteins
2. fats
3. amino acids
4. glucose

Q. Name the organisms which prepare food for themselves.

Q. Which molecule is essential for aerobic respiration to take place?

1. Nitrogen
2. Oxygen
3. Ethanol
4. Carbon dioxide

Q.

List the differences between aerobic and anaerobic respiration. Give the chemical equations for both. [5 MARKS]

Q.

Write in short about the process of respiration.

Q. Respiration that takes place in the presence of oxygen is called

1. Aerobic respiration
2. Anaerobic respiration
3. Cellular respiration
4. None of the above

Q.

Which of the following statements is incorrect?

1. All living things require air to breathe

2. We can feel air but we cannot see it

3. Moving air makes it possible to fly a kite.

4. Air is present everywhere but not in soil.

Q.

A group of arthropods has no red blood cells. Hence they have a different source( a respiratory pigment) to transport oxygen. This source is dissolved in the plasma of the organisms body. Identify the source that helps in transporting oxygen.

1. Haemocyanin

2. Haemocoel

3. Hemoglobin

4. Haemoerythrin

Q.

Why does an athlete breathe faster and deeper than usual after finishing the race? [5 MARKS]

Q.

How does oxygen changes into carbon dioxide inside our body

Q.

Give one word for the following:

The process by which the breakdown of food into small molecules occurs.

Q. Match the organisms with the correct organs of respiration.

1. skin
2. lungs
3. gills
4. spiracles

Q.

Bholu was chased by a dog and as a result, he started running with all his effort. After running a few meters, he was able to fend it off. Appu saw Bholu panting with all his might. Bholu asked “Why do I feel all my muscles are cramping?”

Which of these options describes the correct answer Appu should have fumbled?

1. Oxygenated respiration

2. Anaerobic respiration

3. Asthmic respiration

4. Aerobic respiration

Q. When air is blown inside a test tube containing limewater, the limewater in it turns milky. What does this indicate?

1. The air that we blow contains oxygen.
2. The air that we blow is dirty.
3. The air that we blow contains carbon dioxide.
4. Lime water is always milky.

Q.

The respiration which takes place without using oxygen is called anaerobic respiration.

1. True
2. False

Q.

'Aerobic' means

1. Without air

2. With air

3. Without water

4. Without water

Q.

Which of the following is produced in both aerobic and anaerobic respiration?

1. Oxygen
2. Water
3. Energy
4. Alcohol

Q. Which of the following adaptive features help whales and dolphins to breathe?

1. Nose
2. Skin
3. Blowholes
4. Gills

Q. Earthworms breathe through their _____.

1. gills
2. nose
3. skin
4. trachea

Q. Complete the missing links of aerobic respiration.
+ Oxygen $⟶$ + Water + Energy

1. Lactic acid
2. Carbon dioxide
3. Hydrogen
4. Glucose

Q. Aerobic respiration produces almost 15 times more energy than anaerobic respiration.

1. False
2. True