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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.

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

Which of the following is necessary for respiration in plants?

  1. Carbon dioxide

  2. Oxygen

  3. Chlorophyll

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

Oxygen is the final electron electron acceptor in the electron transport chain, which occurs in the mitochondria. So, for aerobic respiration oxygen is must. Respiration decreases with decreased available oxygen. Under circumstances where no oxygen is present, like in poorly draining soil, anaerobic respiration (fermentation) occurs.

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

If the naked pea seeds are kept in four respiratory flasks, they would germinate best in the flask which contains

  1. Carbon dioxide

  2. Oxygen

  3. Hydrogen

  4. Nitrogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Germination is a process of sprouting of seeds which later develops into a new plant. There are several factors which play vital role in the germination process. Theses are water, temperature, oxygen and light. During the process of germination, initially, the seed absorbs water. Later, the swollen seed respires that requires oxygen. Hence, when naked pea seeds are kept in a flask containing oxygen, it shows the best germination. 
Thus, the correct answer is option B.
Multiple choice factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology
Identify the correct terms for the given statements and select the correct answer.

(i) Sudden increase in the rate of respiration during ripening of fruits.
(ii) Reduction in the consumption of respiratory substrate when mode of respiration is changed from anaerobic to aerobic
(iii) Respiratory oxidation of carbohydrates and fats.

  1. Pasteur effect- (i) ; Floating respiration -(ii) ; Climacteric respiration- (iii)

  2. Pasteur effect- (ii) ; Floating respiration -(iii) ; Climacteric respiration- (i)

  3. Pasteur effect- (iii) ; Floating respiration -(ii) ; Climacteric respiration- (i)

  4. Pasteur effect- (ii) ; Floating respiration -(i) ; Climacteric respiration- (iii)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Climacteric respiration (i) is the sudden increase in respiration during fruit ripening. Pasteur effect (ii) is the inhibition of glycolysis by oxygen. Floating respiration (iii) is the oxidation of non-respiratory substrates like carbohydrates and fats.