Students should refer to Worksheets Class 11 Biology Respiration in Plants Chapter 14 provided below with important questions and answers. These important questions with solutions for Chapter 14 Respiration in Plants have been prepared by expert teachers for Class 11 Biology based on the expected pattern of questions in the Class 11 exams. We have provided Worksheets for Class 11 Biology for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.
Respiration in Plants Class 11 Biology Worksheet
Question. Enzymes differ from inorganic catalysts because enzymes get damaged at high temperatures This difference :
(a) is applicable to all enzymes
(b) is not applicable to thermolabile enzymes
(c) is not applicable to the enzymes of thermophilic organisms
(d) is applicable to thermostable enzymes
Answer
C
Question. What is the significance of respiration ?
(a) Production of cellular energy currency
(b) Provides carbon skeleton as precursor for synthesis of various chemicals
(c) loss of weight
(d) Both (a) and (b)
Answer
D
Question. Enzyme, which catalyzes the breakdown of hydrogen peroxide to water and oxygen, has which type of cofactor?
(a) Tightly bound inorganic compound
(b) Tightly bound organic compound
(c) Permanently bound inorganic compound
(d) Loosely bound organic compound
Answer
B
Question. Select out the correct sequence of glycolytic steps:
(a) PGAL → 3-PGA → 1,3-BiPGA → PEP
(b) PGAL → 1,3-BiPGA → PEP → 3-PGA
(c) PGAL → 1,3-BiPGA → 3-PGA → PEP
(d) PGAL → PEP → 1,3-BiPGA → 2-PGA
Answer
C
Question. During respiration of Yeast which of the following enzyme is not used in oxygen stressed conditions ?
(a) Enolase
(b) Pyruvic acid decarboxylase
(c) Alcohol dehydrogenase
(d) Aconitase
Answer
D
Question. In aerobic respiration, the ultimate or final electron acceptor is :
(a) Atomic oxygen
(b) Molecular oxygen
(c) Cytochrome a3
(d) Water
Answer
B
Question. TCA cycle starts with condensation of acetyl group with :
(a) OAA
(b) Water
(c) NAD
(d) both (a) and (b)
Answer
D
Question. How much amount of energy present in glucose, get released during lactic acid and alcohol fermentation ?
(a) 7 percent
(b) less than seven percent
(c) more than seven percent
(d) always 2 percent
Answer
B
Pyruvate
Question. Pyruvic acid → dehydrogenase Acetyl CoA + CO2 +NADH2 Inthis given reaction which of the following coenzyme is not used ?
(a) Mg++
(b) NAD+
(c) Co-A
(d) TPP
Answer
A
Question. The complete oxidation of one molecule of pyruvate by the stepwise removal of all the hydrogen atoms:
(a) leaving six molecules of CO2
(b) leaving two molecules of CO2
(c) leaving four molecules of CO2
(d) leaving three molecules of CO2
Answer
D
