Anaerobic Respiration

Q.

What is the end product of glycolysis?

Q.

Question 12
The correct sequence of anaerobic reactions in yeast is

(a) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{mitochondria}{\to }Ethanol+Carbondioxide$
(b) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{cytoplasm}{\to }Lacticacid$
(c) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{mitochondria}{\to }Lacticacid$
(d) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{cytoplasm}{\to }Ethanol+Carbondioxide$

Q. All plants give out oxygen during day and carbon dioxide during night.

1. True
2. False

Q. Lactate catalyses the conversion of pyruvate to lactic acid during short term anaerobic respiration.

1. carboxylase
2. dehydrogenase
3. oxidase
4. phosphorylase

Q.

If you suddenly run a lot, you experience cramps in the leg muscles. Can you think of the reason behind it?

1. Aerobic respiration performed, creates sugar alcohols in the muscles which causes the cramps

2. Anaerobic respiration performed, creates lactic acid in the muscles which causes the cramps

3. Sudden running results into tearing of ligaments in the muscles which causes the cramps

4. Sudden running breaks some of the bones which causes the cramps

Q. One of the following controls the peristaltic movements of alimentary canal. This one is:​

1. cerebellum
2. pons
3. crebrum
4. medulla

Q. Respiration in the presence of oxygen is known as respiration, while respiration in the absence of oxygen is known as respiration.

1. anaerobic
2. aerobic
3. external
4. internal

Q. What are the products of aerobic respiration?

1. $C{O}_2,H_{2}O,\text{energy}$
2. $C{O}_2,\text{ethanol},\text{energy}$
3. $\text{Lactic acid},\text{energy}$
4. None of these

Q.

What type of metabolism occurs in the absence of oxygen?

Q.

When is catalytic activity lost?

Q. Given below is the diagram of an experimental set-up :

(b) Will it work satisfactorily? Give reason.

Q.

When oxygen is plentiful pyruvate from glucose is converted to?

Q. Identify the correct statement about cellular respiration.
A) Alcohol fermentation is an example of aerobic respiration.​
B) In aerobic respiration glucose breaks down to ethanol, carbon dioxide and energy.​
C) Cellular respiration is same as breathing.​
D) During aerobic respiration, pyruvate gets broken down into carbon dioxide, water and energy.​

Q. What are the products of aerobic respiration?

1. $C{O}_2,H_{2}O,\text{energy}$
2. $C{O}_2,\text{ethanol},\text{energy}$
3. $\text{Lactic acid},\text{energy}$
4. None of these

Q. During anaerobic respiration in humans, is formed in the cells.

1. ethanol
2. lactic acid
3. muscle
4. skin

Q. A marathon runner continues to run long distances using the energy provided by respiration while a person being chased by a dog gets a burst of energy by respiration.

1. anaerobic
2. external
3. aerobic
4. physical

Q. Name the end products formed during:
(i) Oxidation of glucose in the muscles
(ii) Oxidation of glucose in body cells
iii) Breakdown of glucose anaerobically.

Q.

For the same amount of glucose, aerobic respiration liberates ___ times more energy than anaerobic respiration.

1. 38

2. 2

3. Same

4. 19

Q.

For the same amount of glucose, aerobic respiration liberates ___ times more energy than anaerobic respiration.

1. 2

2. Same

3. 19

4. 38

Q. The disease of Thyroid gland is

1. Overweight
2. Diabetes
3. Stunted growth
4. Goitre

Q. Explain the ways in which glucose is broken down in the absence or shortage of oxygen.

Q.

Three matured air dried bean seeds are taken and tied to a glass slide at three positions as shown. This slide is kept in a beaker containing water in a manner that the top seed is well above water, the middle one is just at the water level and the bottom one is deep in water. The experimental set up is left in a warm place for a few days. What will you notice by the end of the process?

1. Bottom and top seed will germinate and the middle one will not germinate.

2. The middle seed will germinate, the top and the bottom seeds will not germinate.

3. All the seeds will germinate.

4. Top and middle seed will germinate and the one at the bottom will not germinate.

Q. Anaerobic respiration takes place only in

1. Mitochondria
2. Glands
3. Lungs
4. Cytoplasm