Botany Lecture Test Photosynthesis

Front 1

Photosynthetic organisms harness ________ to convert _____ and ____ into complex organic molecules.

Back 1

Photosynthetic organisms harness <u>radient energy </u> to convert <u>CO2</u> and <u>H2O</u> into complex organic molecules

Front 2

How are the complex molecules used?

Back 2

a)energy source for cell metabolism
b) carbon skeleton intermediates
c)building blocks for production of complex organic molecules
d)components of metabolic pathways
e)maintain growth and development of plant

Front 3

Photosynthesis releases ___, produces ___ and _____, and fixes ____ into carbohydrate.

Back 3

O2, ATP NADPH, CO2

Front 4

____Is the route to which nearly all energy is incorporated into the biosphere

Back 4

Photosynthesis

Front 5

3 different equations for photosynthesis

Back 5

CO2+HOH->CH2O+O2
6CO2+6HOH--->C6H12O6+6O2
3CO2+6HOH--->C3H603+3O2+3HOH

Front 6

What is the best equation for photosynthesis?

Back 6

3CO2+6HOH--->C3H6O3+3O2+3HOH

Front 7

What are the primary carbohydrates produced initially by photosynthesis?

Back 7

triose sugars-PGA & PGAL

Front 8

What is the other name for PGA?

Back 8

Phosphoglycerate or phosphoglycericacid

Front 9

What is the other name for PGAL?

Back 9

Phosphoglyceraldehyde

Front 10

A substance that absorbs light is known as a

Back 10

Pigment

Front 11

The area between ultraviolet and infrared waves in the electromagnetic spectrum?

Back 11

visible spectrum

Front 12

What length of waves does this span?

Back 12

400nm-740nm

Front 13

What is the continuous spectrum of radiant energy produced by the sun?

Back 13

electromagnetic spectrum

Front 14

What 2 characters does light have?

Back 14

wave and particle

Front 15

What is the relationship between wavelength and the energy contained by the light wave?

Back 15

Shorter wavelength, more energy

Front 16

What is the relationship between wavelength and the energy of the photon?

Back 16

inversely proportional

Front 17

What is the absorption spectrum of a substance?

Back 17

light absorption pattern of a pigment

Front 18

Chlorophyll absorbs light in the a)____,_____,and___wavelengths and reflects b)________

Back 18

A)violet, blue, red
b)green and some yellow

Front 19

When pigments absorb light, they are boosted to a higher energy state known as?

Back 19

Excitation or excited state

Front 20

After the electrons return to a lower energy they are in a state known as?

Back 20

ground state

Front 21

3 fates of energy from excited state of the electron

Back 21

Energy converted to heat or heat and light:light produced of a longer wavelength (useless)
2)Energy transferred to neighboring pigment molecule (useful)
3)electron transferred to neighboring pigment molecule (useful)

Front 22

When wavelength is longer than the original excitation wavelength, it is called

Back 22

Fluorescence

Front 23

When energy is transferred to a neighboring/adjacent pigment molecule

Back 23

resonance energy transfer
or
inductive resonance

Front 24

Photosynthetic eukaryotes and cyanobacteria, essential for O2 generating photosynthesis and blue-green w/methyl group

Back 24

Chlorophyll A

Front 25

accessory pigment. plants, green algae, and euglenoids. yellow-green, aldehyde group

Back 25

Chlorophyll B

Front 26

Takes place of Chlorophyll B in algae (Brown) and diatoms. NOT IN HIGHER PLANTS

Back 26

Chlorophyll C

Front 27

Not found in higher plants

Back 27

Chlorophyll D & E

Front 28

Photosynthetic bacteria contain what two types of other photosynthetic pigments?

Back 28

bacterial chlorophyll
&
Chlorobium chlorophyll

Front 29

uses HS as e- source rather than H2o and gives off S gas.

Back 29

Chlorobium chlorophyll

Front 30

2 types of carotenoids

Back 30

carotenes
&
xanthophylls

Front 31

how 2 types differ

Back 31

carotenes-orange,red,sometimes purple-lack O2
xanthophylls-yellow pigment-have O2

Front 32

Water soluble, red or blue, photosynthetic pigments found in some of the red algae and in many types of bacteria including cyanobacteria (not in plants!)

Back 32

phycobilins

Front 33

list Accessory pigments

Back 33

Chlorophyll B
Chlorophyll C
carotenoids
and phycobilins

Front 34

most important function of carotenoids

Back 34

anti-oxidants and quenching agents

Front 35

Plants cannot photosynthesize w/o the presence of these which stabilize chlorophyll

Back 35

carotenoids

Front 36

carotenoids are also important for:

Back 36

coloration of flowers and fruits
attracting animals for pollenation and seed dispersal.

Front 37

Type of accessory pigment not found in plants

Back 37

phycobilins

Front 38

Water soluble pigments: not considered to be photosynthetic

Back 38

anthocyanins
and
betacyanins

Front 39

pigments that are flavonoids

Back 39

Anthocyanins

Front 40

pigments that are aromatic nitrogenous compounds...

Back 40

Betacyanins

Front 41

A pair of 6-C aromatic rings linked to a 3rd by a 3-C chain. Each C ring has alcohol groups at various positions...this describes the structure of a :

Back 41

anthocyanidin

Front 42

anthocyanins and betacyanins usually stored in the

Back 42

vacuole

Front 43

Color of anthocyanins and betacyanins dependent upon

Back 43

PH of sol'n in vacuole

Front 44

The most important group of pigments in producing flower color in angiospers and important in shielding new growth and tender portions of the plant from ultraviolet radiation.

Back 44

anthocyanins

Front 45

2 stages of photosynthesis

Back 45

Light dependent rxns
&
Light independent rxns

Front 46

Products of light dependent rxns:

Back 46

Oxygen gas
ATP
NADPH

Front 47

The oxidation of water by sunlight

Back 47

photolysis

Front 48

Where does photolysis take place?

Back 48

the Thylakoid Membrane

Front 49

Electrons from water are transported to_____in the oxygen evolving complex

Back 49

NADP+

Front 50

Removal or loss of E- from a molecule w/ loss of H and acquiring of a + charge

Back 50

Oxidation

Front 51

Acceptance or gain of E- by a molecule w/ gain of H and acquiring of a (-) charge

Back 51

Reduction