Chapter 5 cont.

Question 1

Phototrophy is

Answer 1

the conversion of radiant energy from the sun into ATP and NADPH

Question 2

Autotrophy involves_______ fixation which is the conversion of _______ ______ into _____ molecules

Answer 2

carbon
inorganic carbon
organic

Question 3

Chemolithotrophy is

Answer 3

the use of inorganic materials as a source of energy and electrons

Question 4

3 types of phototrophy are

Answer 4

• oxygenic phototrophy
• anoxygenic phototrophy
• rhodopsin based phototrophy
• all different by types of pigment and their end by-products

Question 5

oxygenic phototrophy

Answer 5

• green plants use

- release O2 as by product

Question 6

Anoxygenic phototrophy have

Answer 6

no chlorophyll only bacteriochlorophyll-used by bacteria

Question 7

Rhodopson based phototrophy

Answer 7

uses rhodopsin that has a purple pigment

Question 8

Photoautotrophy involves

Answer 8

light rxns- energy step aka - light dependent rxn
dark rxns- carbon fixing step aka-light independent rxn
- immediately converts to energy for use

Question 9

Photophosphorylation aka _____, provides ____ and reducing power(___) to power the ____ Cycle(__)

Answer 9

• light rxn
• ATP
• NADPH
• Calvin-Benson
• dark rxn

Question 10

Thylakoid is

Answer 10

the in-folding of the cell membrane

Question 11

Non-cyclic photophosphorylation produces

Answer 11

ATP
NADPH
O2

Question 12

Cyclic phosphorylation produces

Answer 12

ATP

Question 13

What does non-cyclic phos need for dark rxn?

Answer 13

• energy-ATP
• reducing power- NADPH
  
  • these operate simultaneously

Question 14

Photolysis is

Answer 14

when heat causes water to split and put back electron molecule of water

Question 15

Water provides source of electrons in ____ reaction

Answer 15

oxygenic reaction

Question 16

The synthesis of ATP in the non-cyclic photophos rxns are the same as _____.The electrons do not end up on the ____.They either get recycled back or used for ____.

Answer 16

• chemiosmosis
• by-product
• reduction

Question 17

photo = \_\_\_ litho = \_\_\_ autotroph =\_\_\_
photo = \_\_\_organo=\_\_\_\_heterotroph = \_\_\_\_

Answer 17

sun - source of electrons-rock eating - fix carbon

source of energy - SOE- carbon - feeders on others

Question 18

Archaea have no _____.based photosystems. They utilize a membrane ___ called ____ to capture ____energy.

Answer 18

chlorophyll
protein
bacterioorhodopsin
radiant

Question 19

In oxygen poor environments archaea use _____ that function as a _____driven ____pump.

Answer 19

pigments
light
proton

Question 20

Archaea are ____ trophs

Answer 20

photo

Question 21

Chemolithotrophs use ________ as _____ donors and ____ source.

Answer 21

inorganic compounds
electron
energy

Question 22

Some common electron donors for chemolithotrophs are

Answer 22

H, reduced N, S or Fe

Question 23

Photolithotrophs require additional energy from the ____

Answer 23

sun

Question 24

In the dark rxn or ________ , ____ and ____ are used to fix carbon. This is an _____ system and pathway. The pick up molecule is ____. The starting material is continuously ____

Answer 24

Calvin-Benson Cycle
ATP
NADPH
anabolic
RuBP
regenerated

Question 25

Iron oxidizing bacteria have a low ___ yield so they consume ____ quantities of _____ molecules. This has a significant ecological impact.

Answer 25

energy
high
inorganic

Question 26

Iron bacteria oxidize ___ iron (Fe2+) into ___ iron(Fe3+)

Answer 26

ferrous

ferric

Question 27

Sulfur oxidizing bacteria oxidize

Answer 27

sulfides, sulfur, thiosulfate to
sulfuric acid(H2SO4)

Question 28

Many chemolithotrophs are _____ using CO2 as ____ source. This gives zero ____ power

Answer 28

autotrophic
carbon
reducing

Question 29

Nitrifying bacteria oxidize ____ to _____

Answer 29

amonia(NH3)

nitrate(NO3)

Question 30

Hydrogen bacteria oxidize ____ to ____

Answer 30

hydrogen gas(H2)
water(H2O)

Question 31

Reverse ____ flow is necessary for _____ to generate ____ power.The ___ yield decreases

Answer 31

electron
chemolithoautotrophs
ATP

Question 32

Chemolithoautotrophy is very _____ because most of the ____ is expended on generating _____ power rather than on ___. Many will grow as ____ if supplied with enough ____ sources. Many can grow either ____ or ____ by varying the final ____ acceptor.

Answer 32

inefficient 
energy
reducing 
ATP
heterotrophs
carbon
aerobically
anaerobically
electron