Tag: do plants breathe?

Questions Related to do plants breathe?

Aerobic respiration occurs in

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Thylakoid.

  2. Golgi body.

  3. Grana.

  4. Mitochondria.

Show answer
Correct Option: D
Explanation:

Glycolysis takes place in the anaerobic condition in the cytosol of cytoplasm in all cells, Krebs cycle takes place in the aerobic condition in the mitochondrial matrix of eukaryotic cells.

So the correct option is 'Mitochondria.'

During aerobic respiration, acetyl CoA is synthesised in

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Cytosol.

  2. Mitochondrial matrix.

  3. Perichondrial space.

  4. Glyoxysomal matrix.

Show answer
Correct Option: B
Explanation:

Acetyl CoA is synthesized during oxidative decarboxylation of pyruvic acid and the reaction takes place in the mitochondrial matrix in which two molecules of NADH are produced and it enters the citric acid cycle.

So the correct option is 'Mitochondrial matrix'.

Pentose phosphate pathway, an alternative pathway of respiration was elucidated by

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Horecker

  2. Warburg and Dickens

  3. Blackman

  4. Kelvin

Show answer
Correct Option: B
Explanation:

The pentose phosphate pathway (PPP) or HMP shunt is a biochemical pathway parallel to glycolysis that generates NADPH (reduced energy) and pentoses. PPP was described by Warburg and Dickens. 

Anaerobic respiration was first of all reported by 

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Maguenne

  2. Kostychev

  3. Klein

  4. Pfeffer

Show answer
Correct Option: B
Explanation:

An anaerobic respiration a type of respiration in which an organism generates usable energy without the involvement of oxygen. So, in brief, it is respiration without oxygen. It was first reported by Kostychev.

Free radicals are formed through

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Oxidation

  2. Reduction

  3. Hydrolysis

  4. Synthesis

Show answer
Correct Option: A
Explanation:

A.Oxidation – Release of electrons and protons or reaction with oxygen

B.Reduction – Acceptance of electrons and protons or release of oxygen.

C. Hydrolysis – Breaking of molecules in presence of water.

D.Synthesis – Process of formation of biomolecules.

So, the correct option is ‘oxidation’.

The whole process of aerobic respiration takes place in the _______________.

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Mitochondria

  2. Mitochondria and parozysms

  3. Mitochondia and cytosol

  4. Cytosol

Show answer
Correct Option: A

The energy-releasing process in which the substrate is oxidised without an external electron acceptor is called?

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Aerobic respiration

  2. Glycolysis

  3. Fermentation

  4. Photorespiration

Show answer
Correct Option: A

Aerobic respiration of glucose produces energy _______________.

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. $637K.Cal$

  2. $640K. Cal$

  3. $686K.cal$

  4. $693K.cal$

Show answer
Correct Option: A

In aerobic respiration, the ultimate or final electron acceptor is:

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Atomic oxygen

  2. Molecular oxygen

  3. Cytochrome $a _3$

  4. Water

Show answer
Correct Option: A
Explanation:

In cellular respiration: NADH and FADH2 are converted to ATP through an electron transport chain with oxygen as the 'terminal electron acceptor'. Oxygen is the final electron acceptor. This is the only reason oxygen is required for living systems.

So, the correct option is 'Atomic oxygen'.

Which of the following processes is not related to the pathway of respiration which occurs in both aerobic and anaerobic respiration?

zoology respiratory system do plants breathe? plant respiration respiration-plants

  1. Dehydrogenation of triose phosphate

  2. Substrate level phosphorylation

  3. Reduction of coenzyme $NAD^+$

  4. Release of Carbon dioxide

Show answer
Correct Option: B
Explanation:

Substrate level phosphorylation provides quicker, less efficient, source of ATP, independent of external electron acceptors.This is only present in human erythrocytes which have no mitochondria and in oxygen depleted muscle.