Respiration In Plants

Question 1

compounds which are subjected to biological oxidation

Answer 1

respiratory substrates

Question 2

Gaseous Exchange Of Plants

Answer 2

Lenticels and Stomata

Question 3

Do Roots and Stem respire

Answer 3

Yes but wayyyy lesser than animals

Question 4

why is there loose packing of parenchyma cells in leaves stem and roots

Answer 4

network of air spaces to easy to exchange of gases

Question 5

oxidation of glucose takes place in how many steps

Answer 5

many steps

Question 6

what happens to o2 co2 water and energy when the process of respiration occurs

Answer 6

o2 is utilized and co2 h20 and energy released

Question 7

types of respiration based on blackmann

Answer 7

1) floating
2) protoplasmic

Question 8

aerobic

Answer 8

complete oxidn of organic molecules
presence of molecular oxygen into co2 and h20

Question 9

anaerobic

Answer 9

incomplete oxidn of organic molecules
absence of molecular oxygen

Question 10

where do all the rkn in plant occur(anaerobic)

Answer 10

cytoplasm , mitochondria

Question 11

facultative anaerobs

Answer 11

aerobics which respire without o2 also

Question 12

obligate anaerobes

Answer 12

respire anaerobically only, lack enzymes

Question 13

BREAKDOWN OF GLUCOSE INTO PYURVIC ACID

Answer 13

GLYCOLYSIS

Question 14

Glycosis is called

Answer 14

emp pathway

Question 15

discovered by

Answer 15

Embden, Meyerhof, Parnas

Question 16

where does it occur

Answer 16

cytoplasm

Question 17

type of oxidn

Answer 17

partial oxidn of glucose to form 2 molecules of pyurvic acid

Question 18

how is glucose obtained from plants and animals

Answer 18

plants - sucrose
animals - starch

Question 19

2 phases of glycosis

Answer 19

1) glucose activation phase
2) energy extraction phase

Question 20

in the given cards write the product and catalyst used and mention if ATP is used

Answer 20

OKAY !

Question 21

Glucose

Answer 21

Glucose 6 phosphate (hexokinase) by ATP -> ADP

Question 22

Glucose 6 phosphate

Answer 22

Fructose 6 phosphate ( phosphohexoisomerase)

Question 23

Fructose 6 phosphate

Answer 23

Fructose 1,6 Bi-phosphate (phosphofructokinase) ATP -> ADP

Question 24

Fructose 1, 6 Bi-phosphate

Answer 24

Two Products
1)DHAP - Dihydroxyacetone phosphate
2) 3-PGAL - 3 phosphoglyceraldehyde

(Aldolase)

Question 25

Interconversion of the 2 triose products can be done

Answer 25

phosphotriose isomerase

Question 26

3-PGAL is converted into

Answer 26

1,3 bisphosphoglyceric acid( BPGA)
{NAD -> NADH}
(Diphosphoglyceraldehyde dehydrogenase)

Question 27

BPGA

Answer 27

to PGA ( 3 phosphoglyceric acid)

2ADP -> 2ATP

phosphoglycerate transphosphorlyase

Question 28

3-PGA

Answer 28

2- phosphoglycerate ( phosphoglyceromutase)

Question 29

2 - phosphoglycerate

Answer 29

PEP ( phosphoenol pyruvate) { Enolase}

Question 30

PEP

Answer 30

2ADP -> 2ATP
Pyruvic acid

(pyruvate kinase)

Question 31

net gain of ATP

Answer 31

2 ATP

Question 32

How ATP is formed from NADPH2 in aerobic respiration and hw is h2o obtained

Answer 32

3
h2o is obtained from electron transport of mitcohondria

Question 33

where is pyruvic acid used

Answer 33

1) lactic acid
2) alcoholic fermentation
3) aerobic respiration ( presence of o2 )

Question 34

who was the 1st to discover fermentation

Answer 34

gay lussac

Question 35

in alcoholic fermentation
pyruvic acid is converted to

Answer 35

co2 and ethanol

Question 36

the two enzymes used are

Answer 36

pyruvic acid decarboxylase to covert pyruvic acid to acetaldehyde

acetaldehyde to alcohol by 2NADH + H+ and alchoholic dehydrogenase

Question 37

why is max conc of alcohol in beverages only 13%

Answer 37

because yeast poison themselves to death when conc reaches 13%

higher conc can be achieved by distillation

Question 38

Pyruvic acid is converted to lactic acid by

Answer 38

lactobacillus lacti bacteria

and during exercise the oxygen is inadequate, then pyruvic acid is reduced to lactic acid by the enzyme
LACTATE DEHYDROGENASE

Question 39

Why are both alcoholic fermentation and lactic acid fermentation hazardous

Answer 39

bcoz acid or alcohol is produced

Question 40

net gain of atp in both process

Answer 40

2 ATP

Question 41

Release of CO2 occurs in which process

Answer 41

Alcoholic fermentation