Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Respiration > Flashcards

Respiration Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
0
Q

How is energy released during respiration?

A

By breakdown of C-C bonds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is the site of glycolysis

A

Cytoplasm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the most common respiratory substrate?

A

Carbohydrates

But proteins,organic acids,fats, are also used.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Is the energy released in respiration used up directly?

A

No, it is used to synthesise ATP which can be further broken to utilise energy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Exchange of gases in plants occur through…?

A

Stomata and lenticels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why plants get along without specialised respiratory organs?

A
  1. Each part of the plant is adapted to meet its own needs for gaseous exchange
  2. There is not a great demand for gaseous exchange in plant
  3. Photosynthesis leads to a large amount of exchange.
  4. Gases diffuse via an interconnected network of loose parenchyma cells which form air spaces in plants
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Classify some organisms on the basis of mode of respiration

A

Bacillus subtilis -obligate aerobic
Chlorobium -facultative aerobic
Clostridium botulinum- obligate anaerobic
Pseudomonas -facultative anaerobic.

Most photosynthetic bacteria are facultative aerobes..

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

During glycolysis glucose breaks into..?

A

2 molecules of Pyruvic acid by partial oxidation…

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Who coined the term glycolysis?

A

Embden,Mayerhoff and parnas(EMP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which enzyme breaks down sucrose

A

Invertase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the sites for utilisation of ATP in glycolysis?

A
  1. Conversion of glucose to glucose-6-phosphate

2. Fructose-6-phosphate to fructose-1,6-biphosphate.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where in glycolysis NADH+H^+form?

A

3-PGAL is converted to 1,3-BPGA.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In glycolysis energy yielding steps are..?

A
  1. BPGA to 3-PGA

2. PEP to pyruvic acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the fate of pyruvic acid ?

A

It may undergo

  1. Lactic acid fermentation.
  2. Alcoholic fermentation
  3. Aerobic respiration

according to cellular needs..

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which enzymes catalyse alcoholic fermentation ?

A

Pyruvic acid decarboxylase

Alcohol dehydrogenase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which enzymes catalyse lactic acid fermentation?

A

Lactate dehydrogenase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What acts as reducing agent in fermentation?

A

NADH+H^+ which gets re oxidised to NAD^+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How much of the energy in glucose is released in fermentation?

A

Less than 7%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Mention the events of aerobic respiration

A
  1. Kerbs cycle=>3CO2 (matrix)

2. ETS=>release of ATP (inner membrane of mitochondria)..

19
Q

How many molecules of NADH are formed from 1 molecule of glucose?

(NAD* is reduced to NADH)

A

2

20
Q

What happens when pyruvate enters mitochondrial matrix?

A

It undergoes oxidative decarboxylation catalysed by the enzyme pyruvate dehydrogenase

It requires participation of acetyl co-A
Mg, NAD^+ etc

21
Q

Which substrate enters the TCA cycle?

A

Acetyl co-A

22
Q

How many ATP molecules are synthesised by oxidation of

(1) 1 NADH?
(2) 1 FADH2

A

3

2

23
Q

What is the final H-receptor in aerobic respiration?

A

Oxygen

24
Q

How is a proton gradient generated in respiration?

A

Energy of oxidation-reduction.so is c’d

(Oxidative phosphorylation)…

25
Q

What is respiratory quotient?

A

Volume of CO2 evolved
_______________________
Volume of O2 consumed

26
Q

Mention RQ for different substrates

A

Carbohydrates-1

Fats-RQ less than 1

27
Q

How much energy is provided by 1ATP

A

7300cal/mol

28
Q

Vit c was the first vitamin to be produced by fermentation using-

A

Acetobacter.

29
Q

What is the substrate for commercial formation of alcohol?

A

SUCROSE or cane sugar.

30
Q

For retting of jute which fermenting microbes are used?

A

Butyric acid bacteria like C.botulinum

31
Q

Citric acid is produced by fermentation of sugar by the action of

A

Aspergillus niger

32
Q

Name the common enzyme of HMP pathway and glycolysis

A

Hexokinase

33
Q

What is chemiosmotic hypothesis

A

Formation of ATP occurs due to H+ flow through a membrane along a proton gradient.

34
Q

What is the role of ATP in an enzymatic reaction

A

Acts as a COENZYME

35
Q

To which ETS protein does cyanide react?

A

Cytochrome a3

It checks formation of ATP through ETS

36
Q

In mitochondria cytochrome oxidase is present in

A

Inner membrane

37
Q

What is the role of ATP in an enzymatic reaction

A

Acts as a COENZYME

38
Q

To which ETS protein does cyanide react?

A

Cytochrome a3

It checks formation of ATP through ETS

39
Q

In mitochondria cytochrome oxidase is present in

A

Inner membrane

40
Q

What is the RQ for succulents?

A

Zero

41
Q

Malonate is competitive inhibitor for

A

Succinate dehydrogenase

42
Q

Maximum amount of energy is liberated on the oxidation of

A

Fats

43
Q

Sequence of electron acceptors in ETS

A

N-F-Q-cyt-b-c-a-a3

44
Q

How many ATP are produced by oxidative phosphorylation

A

34

45
Q

What is beta oxidation?

A

Respiratory decomposition of fatty acids

46
Q

Inhibition of anaerobic respiration by atmospheric oxygen is c’d

A

Pasteur effect

Biology (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions