RESPIRATION IN PLANTS Flashcards

1
Q

Process of Breathing is connected to the process of _________

A

Release of energy from food

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2
Q

Cellular Respiration

A

The breakdown of food materials inside the cell to release energy and using this energy for synthesis of ATP is called CR

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3
Q

The energy required for life processes is obtained from ___

A

Breaking down of macromolecules (food)

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4
Q

Respiration

A

Breaking of C-C bonds of complex compounds leading to release of considerable amount of energy is known as Respiration.

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5
Q

Respiratory Quotient.

A

Ratio of CO² evolved and 0² absorbed

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6
Q

RQ of Carbohydrates:

A

=1

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7
Q

RQ of Fats:

A

<1

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8
Q

RQ of Organic Acids:

A

> 1

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9
Q

RQ of Succulent Plants:

A

0

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10
Q

In aerobic respiration what site(s) are involved?

A

Mitochondria and Cytoplasm

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11
Q

In anaerobic respiration what site(s) are involved?

A

Cytoplasm

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12
Q

Tripalmitin RQ?

A

0.7

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13
Q

RQ of Proteins?

A

0.9

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14
Q

Atp utilization procedure.

A

Jab cell mai oxidation hota hai tab RS ki saari energy cell mai ek baar mai energy release nhi hoti atteast in muttiple steps (controlled by enzymes). Iske baad ye chemical energy ke form mai trap no jati hai ie. ATP

This ATP is then utilized only in times of need. otherwise it is stored.

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15
Q

Glycolysis scheme given by?

A

J.Parnas
Gustav Embden
Otto Meyerhoff

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16
Q

Plants can survive without respiratory organs?

A
  1. Less distance tb covered by gases.
  2. Photosynthesis, fulfill their needs.
  3. Do not impose high demands.
  4. Almost all cells in contact with air.
  5. Cells inside and beneath bark have openings called “lenticels”.
  6. Loose packing of parenchyma in L,R,S facilitates.
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17
Q

Sucrose => ?

A

Sucrose => end product of glucolysis.
Fructose + Glucose (enter glycolytic pathway)

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18
Q

Write products formed at every step of Glycolysis?

A

Glucose
Glucose 6 phosphate
Fructose 6 phosphate
Fructose 1,6 bisphosphate
Triose Phosphate (PGAL) (DHAP)
2 × Triose Bisphosphate
2 × Triose Phosphate
2 × 2-phosphoglycerate
2 × phosphoenolpyruvate
2 × pyruvic acid

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19
Q

Enzyme used in glycolysis?

A

Hexokinase
Hexoisomerase
Phosphofructokinase
Aldolase
Isomerase
Pgal dehydrogenase
Transphosphorylase
Phosphoglyceromutase
Enolase
Pyruvate kinase

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20
Q

ATP => ADP ?

A

Phosphorylation (2)

21
Q

NAD+ => NADH+ + H+

A

Oxidative phosphorylation

22
Q

ADP => ATP

A

Substrate level phosphorylation

23
Q

H²O removal?

A

Dehydration

24
Q

Procedures in glycolysis?

A

Phosphorylation
Isomerization
Phosphorylation
Cleavage
Isomerization
Oxidative phosphorylation
Substrate level phosphorylation
Mutation
Dehydration
Substrate level phosphorylation

25
Q

Total gain from glycolysis ?

A

2NADH² + 4ATP + 2PA

26
Q

Net gain from glycolysis ?

A

2NADH² + 2ATP + 2PA

27
Q

Why respiratory pathway regarded as amphibolic pathway?

A

Substrate breakdown => catabolic
Substrate synthesis post breakdown => anabolic

Therefore, amphibolic.

28
Q

Fat’s pathway to enter Kreb Cycle.

A

Fatty acids and glycerol
Or
Triose Phosphate
Pyruvic acid
Acetyl CoA

29
Q

Carbohydrates’ pathway to enter Kreb Cycle.

A

Simple sugars (glucose)
Glucose 6 phosphate
Fructose 1,6 phosphate
Pgal
Pyruvic acid
Acetyl CoA

30
Q

Protein’s pathway to enter Kreb Cycle.

A

Amino acids =>
PA, or
Acetyl CoA, or
Enters KC

31
Q

Common intermediate in amphibolic pathway.

A

Acetyl CoA

32
Q

Common pathway.

A

Kreb Cycle

33
Q

Common pathway.

A

Kreb Cycle

34
Q

Assumptions of Respiratory Balance Sheet? (4)

A
  1. There is a sequential orderly pathway functioning, 1 substrate forming next. Glycolydid TCA ETS occur one after the other.
  2. Only 1 glucose is being respired, no alternate substrates enter pathway.
  3. NADH synthesized in glycolysis transferred into Mt and undergoes OP.
  4. No intermediates in pathway utilized to synthesize another compound.
35
Q

Fermentation ATP generation.

A

2 ATP

36
Q

Aerobic Respiration ATP generation.

A

38 ATP

37
Q

Complete breakdown of CO² AND H²O

A

Aerobic Respiration

38
Q

Partial breakdown of glucose

A

Fermentation

39
Q

NaDH => NAD+ Reaction speed in:
a) Fermentation
b) Aerobic Respiration

A

a) slow
b) vigorous

40
Q

Net gain from Link Reaction:

A

2 NADH² + 2CO²

41
Q

Net gain from Link Reaction:

A

2 NADH² + 2CO²

42
Q

1 Kreb Cycle ATP production:

A

12

43
Q

___ KC for 1 glucose

A

2

44
Q

Metabolic pathway thru which electron passes from 1 carrier to another

A

ETS

45
Q

e- carrier Proteins are arranged according to their

A

Redox potential scale

46
Q

____ is the final e- acceptor

A

47
Q

Aerobic Respiration occurs in?

A

Mitochondria

48
Q

Events of Aerobic Respiration?

A
  1. Complete oxidation of pyruvate by stepwise removal of H atoms, leaving 3 molecules of CO². (In Mt. Matrix)
  2. Passing on of e- removed as part of H+ atoms to molecular O² with simulations synthesis of ATP. ( inner mitochondrial matrix)