Tag: life processes in living organisms- part 1

Questions Related to life processes in living organisms- part 1

If a starved plant is provided with glucose the rate of respiration would

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. Decrease

  2. Increase

  3. Become constant

  4. First rise than fall

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Correct Option: B
Explanation:

If a starved plant is provided with glucose, the rate of respiration would increase. It is because, carbohydrate is the primary respiratory substrate.

The rate of respiration could be checked by

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. Malonate

  2. $CO _2$

  3. Chloroform and cyanides

  4. All of the above

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Correct Option: D
Explanation:

Respiration in plants is the process which enables the breakdown of  simple carbohydrates, like glucose into simpler substances thereby liberating carbon dioxide and energy. The factors that effect respiration are temperature, carbon dioxide concentration, water and light. The factor that inhibits or checks the rate of respiration in the mitochondria of plants include malonate, CO$ _2$ an chloroform and cyanides.

When evolution of $CO _{2}$ is more than intake of oxygen?

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. Sucrose is respaired

  2. Glucose is respaired

  3. Organic acids are respired

  4. Fats are respired

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Correct Option: C
Explanation:

The amount of oxygen is more in organic acids. Thus when respiration of organic acids takes place, the liberation of $CO _2$ is more. So, the R.Q of organic acid is more than one.

The optimum temperature for respiration is 

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. 20 -30$^o$C

  2. 25 -60$^o$C

  3. 40 -50$^o$C

  4. 10 -30$^o$C

Show answer
Correct Option: A
Explanation:

Respiration is the breakdown of the carbon-carbon bond to release energy.

This process is done with the help of a variety of different enzyme and as we know that the enzyme works efficiently in a narrow range of temperature.
The optimum temperature range for respiration is 20- 30-degree Celsius in which the enzyme work efficiently and the respiration is carried out.
So, the correct option is ' 20-30°C'

The potato growing in hilly areas is bigger in size due to

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. High rate of photosynthesis at high altitude.

  2. Low rate of respiration at high altitude.

  3. Due to formation of more fat.

  4. None of the above.

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Correct Option: B

The raw materials needed for respiration are

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. Glucose and $O _2$.

  2. Glucose and $CO _2$.

  3. Glucose and carbon.

  4. Glucose and sucrose.

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Correct Option: A
Explanation:

Respiration is a process in which glucose is oxidised to release carbon dioxide, water and energy in the presence or absence of oxygen by a multistep reaction.

So, the correct answer is 'Glucose and O$ _2$'.

Respiration results in

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. Increase in weight

  2. Decreases in weight

  3. No change in weight

  4. None of these

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Correct Option: B
Explanation:

Respiration result in a decrease in dry weight. During respiration when we breathe, oxygen enter in the body of an organism. Due to the presence of oxygen, the breakdown of glucose into pyruvate and other products takes place. At last, carbon dioxide, as well as some energy, are also released out from the body through the process of exhalation.

So, the correct answer is 'decrease in weight'.

Consider the following statements w.r.t. respiration 
a. Cyt-b is a mobile electron carrier
b. $CO _2$ is end product of all types of respiration
c. Five atoms of oxygen are required for complete oxidation of one molecule of pyruvate
d. Conversion of succinate to fumarate produces a reduced coenzyme.

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. a & c are incorrect

  2. Only d is correct

  3. a & d are correct

  4. b & d are correct

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Correct Option: A
Explanation:

Cyt-b is part of ETS which act as an electron carrier and formation of ATP whereas CO$ _2$ is the only end product of anaerobic respiration. conversion from succinate to fumarate produces a reduced coenzyme known as succinate dehydrogenase (SDH) or succinate-coenzyme Q reductase (SQR).

So the correct option is 'a & c are incorrect'

The rate of respiration of young maturing seeds is quite high but as water contents decreases during further maturation respiration

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. Remains high

  2. Stop complete

  3. Increase steadily

  4. Decrease steadily

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Correct Option: D
Explanation:

The rate of respiration of young maturing seeds is quite high which has amount of water as the limiting factor during maturation. Water helps in the acceleration of enzyme activity. When the amount of water is less, the rate of maturation decreases.

The increases respiration rate due specifically to anion uptake is called _______________.

factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

  1. Salt respiration

  2. Active absorption

  3. Exchange absorption

  4. Ground respiration

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Correct Option: A