Tag: respiration

Quizzes (27) Questions (50)

Questions Related to respiration

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

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

  1. Decrease

  2. Increase

  3. Become constant

  4. First rise than fall
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

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

The rate of respiration could be checked by

  1. Malonate
  2. $CO _2$

  3. Chloroform and cyanides

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  1. Sucrose is respaired

  2. Glucose is respaired

  3. Organic acids are respired

  4. Fats are respired
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

The optimum temperature for respiration is 

  1. 20 -30$^o$C
  2. 25 -60$^o$C
  3. 40 -50$^o$C
  4. 10 -30$^o$C
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

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

  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.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

At high altitudes, the lower temperature reduces the rate of respiration in plants, which means less stored carbohydrate is consumed, allowing more to be stored as starch in tubers like potatoes, leading to larger sizes.

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

The raw materials needed for respiration are

  1. Glucose and $O _2$.
  2. Glucose and $CO _2$.

  3. Glucose and carbon.

  4. Glucose and sucrose.
Reveal answer Fill a bubble to check yourself
A Correct answer
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$'.

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

Respiration results in

  1. Increase in weight

  2. Decreases in weight

  3. No change in weight

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.

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

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.

  1. a & c are incorrect

  2. Only d is correct

  3. a & d are correct

  4. b & d are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

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

  1. Remains high

  2. Stop complete

  3. Increase steadily

  4. Decrease steadily
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  1. Salt respiration

  2. Active absorption

  3. Exchange absorption

  4. Ground respiration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Salt respiration refers to the increase in the rate of respiration observed in plant roots when they are actively absorbing ions (anions or cations) from the soil against a concentration gradient.