Respiratory Substrates

Q. Which of the following factors affect the rate of respiration?

1. Temperature
2. Oxygen
3. Salts
4. All of the above

Q.

What are the waste products of cellular respiration?

Q. Which among the following intermediates of TCA cycle can enter amino acid biosynthesis?

1. Alpha-ketoglutaric acid
2. Malic acid
3. Citric acid
4. Isocitric acid

Q. Which of the following statements is incorrect?

1. Animals obtain food (energy) from autotrophs
2. All cells of a plant do not participate in photosynthesis
3. Only carbohydrates are utilised by plants to release energy
4. Plant cells consisting of chlorophyll in chloroplasts can perform photosynthesis

Q. Which of the following statements correctly describes respiratory substrates?

1. Substances which do not produce energy
2. Substances which are broken down during respiration
3. Substances which are excreted out of the body
4. All of these

Q.

In what form is glucose stored in plants?

Q. Identify the correct statement(s) regarding respiration:
i. Fatty acids cannot be used for respiration.
ii. The energy is used to synthesise ATP molecules.
iii. Intermediate products of respiration are used as precursors for biosynthesis of other molecules.

1. Only i is correct
2. Both i and ii are correct
3. Both ii and iii are correct
4. Only ii is correct

Q. Breakdown of ________ occurs when the body is starving, in order to produce energy.

1. protein
2. fat
3. carbohydrates
4. organic acids

Q. Which of the following is the rare mode of respiration?

1. Floating respiration
2. Anaerobic respiration
3. None of these
4. Protoplasmic respiration

Q. Respiratory quotient of fats is

1. 1
2. less than 1
3. greater than 1
4. 0.5

Q. The breakdown of C-C bonds of compounds via oxidation in the cells to obtain energy is called ____i____. The compounds that are used for this oxidation are called ____ii____.

1. i - breathing, ii - oxidising agents
2. i - reduction, ii - reducing agents
3. i - respiration,
   ii - respiratory substrates
4. i - photosynthesis,
   ii - photosynthetic substrates

Q.
$4\left(C_{51}{H}_{98}{O}_6\right)+290O_2\to 204{\mathrm{CO}}_2+196H_{2}O+\mathrm{Energy}$

The R.Q. of the above equation is

1. 1
2. 1.45
3. 0.7
4. 1.62

Q. Which of the following statements correctly describes respiratory substrates?

1. Substances which do not produce energy
2. Substances which are broken down during respiration
3. Substances which are excreted out of the body
4. All of these

Q. Which of the following substrates liberates the maximum energy?

1. Carbohydrates
2. Fats
3. Proteins
4. Cannot be determined

Q. Respiratory quotient of fats is

1. 1
2. less than 1
3. greater than 1
4. 0.5

Q. Fatty acid enters the Kreb's cycle in the form of .

1. glycerol
2. acetyl-coA
3. pyruvate
4. NAD

Q. Fatty acid enters the Kreb's cycle in the form of .

1. glycerol
2. acetyl-coA
3. pyruvate
4. NAD

Q. RQ of germinating Pisum sativum seed is ____.

1. Unity
2. More than unity
3. Zero
4. Less than unity