Chapter 11

Question 1

Biological energy transformations obey the laws of _______

Answer 1

THERMODYNAMICS

Question 2

The presence of ______ made the EVOLUTION of respiration possible .

Answer 2

Free oxygen

Question 3

________ is a kind of chemical link between catabolism and anabolism.

Answer 3

ATP

Question 4

Respiration and ________ are the processes whereby energy stored in carbohydrates is released.

Answer 4

Glycolysis

Question 5

Light reactions take place on the:

Answer 5

Grana

Question 6

Dark reactions take place in the - - - - -

Answer 6

Stroma

Question 7

_______ lack chloroplasts but have unstacked photosynthetic membranes that work like thylakoids

Answer 7

Photosynthetic prokaryotes

Question 8

_________ and _________ are products of light reactions used in stroma.

Answer 8

Atp and NADPH

Question 9

NO NET gas exchange between leaves and environment is called ________

Answer 9

Compensation point

Question 10

Photosynthesis is a _______________ process

Answer 10

Redox

Question 11

Oxygen released during photosynthesis comes from…….

Answer 11

Water

Question 12

In 1930s, ______________ hypothesised that plants split water as a source of hydrogen

Answer 12

Van Niel

Question 13

Chloroplasts are present in very large numbers __________________ of leaf surface

Answer 13

Half a million per mm2

Question 14

Chloroplasts are present mainly in

Answer 14

Mesophyll cells

Question 15

Each mesophyll has ______ chloroplasts

Answer 15

20 to 100

Question 16

_________ contains most of the enzymes involved in photosynthesis

Answer 16

Stroma

Question 17

________________ of photosynthetic ETC are part of thylakoid.

Answer 17

Electron acceptors

Question 18

Photosynthesis is ______ process.

HINT: ENERGY…?

Answer 18

Energy capturing

Question 19

Respiration is……….. Process

Energy?

Answer 19

Energy releasing…. Along with glycolysis

Question 20

Instrument used to measure the relative abilities of diff pigments to absorb diff wavelengths

Answer 20

SPECTROPHOTOMETER

Question 21

Wavelengths absorbed by pigments.. Range

Answer 21

380 to 750 nm

Question 22

Wavelengths absorbed…..

Answer 22

Disappear

Question 23

Accessory photosynthetic pigments?

Answer 23

Carotenoids

Chlorophyll b

Question 24

Types of carotenoids ?

Answer 24

1. Xanthophyll

2. Carotenes

Question 25

Colour of carotenes

Answer 25

Red to orange

Question 26

Colour of xanthophylls

Answer 26

Yellow to orange

Question 27

Function of accessory pigments

Answer 27

Broaden absorption and utilisation of light energy

Question 28

What are the chlorophyll in photosynthetic bacteria called?

Answer 28

Bacteriochlorophylls

Question 29

Where are chlorophyll a, b, c and d found?

Answer 29

1. Green algae | 2. Photosynthetic eukaryotes

Question 30

Chlorophyll absorb mainly...... And.... Colours

Answer 30

Violet blue and orange red

Question 31

______, _________ & _________ are the colours least absorbed by chlorophylls

Answer 31

Green... Yellow and indigo | That's why they appear green as it is transmitted not absorbed.... Green masks yellow

Question 32

Haem group of Hb is also a poryphrin ring containing _______in place of ______

Answer 32

Iron in place of Magnesium

Question 33

Phytol formula

Answer 33

C 20 H 39

Question 34

_______is the functional group in chlorophyll a

Answer 34

Methyl | CH3

Question 35

________________is the functional group in chlorophyll B

Answer 35

CHO | Carbonyl group

Question 36

Function of hydrophobic tail of chlorophyll

Answer 36

Anchor it to the thylakoid membrane

Question 37

Function of hydrophilic head of chlorophyll

Answer 37

Absorb light

Question 38

Structure of hydrophobic tail of chlorophyll

Answer 38

Phytol chain C20 H 39 | It is attached to one of the pyrol rings

Question 39

Structure of hydrophilic head of chlorophyll

Answer 39

One Mg in canter bonded to N of 4 pyrol rings that have carbon and nitrogen atoms

Question 40

C 55 H 72 O5 N4 Mg. Formula of???

Answer 40

Chlorophyll a

Question 41

C 55 H70 O6 N4 Mg | Formula of?

Answer 41

Chlorophyll b

Question 42

Colour of chlorophyll a

Answer 42

Blue green

Question 43

Colour of chlorophyll b

Answer 43

Yellow green

Question 44

__________is the most abundant photosynthetic pigment

Answer 44

Chlorophyll a

Question 45

Chlorophyll a is found in all photosynthetic organisms except _________

Answer 45

Photosynthetic bacteria

Question 46

__________protect chlorophyll from intense light

Answer 46

Carotenoids

Question 47

Route of energy transfer in pigments

Answer 47

Carotenoids to chlorophyll B to chlorophyll a

Question 48

First action spectrum obtained on

Answer 48

Spirogyra

Question 49

First action spectrum obtained by

Answer 49

TW Engelman

Question 50

_________ Percent of total photosynthesis is carried by Terrestrial plants

Answer 50

10%

Question 51

Stomata cover ______ Percent of leaf surface

Answer 51

1 to 2

Question 52

________ & _________ wavelengths cause maximum photosynthesis

Answer 52

Blue and orange red

Question 53

When equal light intensities are given there's is more photosynthesis in _________ than in blue part of spectrum

Answer 53

Red

Question 54

Reducing power produced in light stage is

Answer 54

NADPH..... NADP + H+

Question 55

Assimilating power is produced in form of....... during light stage

Answer 55

ATP

Question 56

Transfer of energy in photosynthesis occurs through

Answer 56

RESONANCE

Question 57

Only _______ Percent of the light falling on leaves is absorbed

Answer 57

1