What are oxygenic photosynthesis, anoxygenic photosynthesis, and rhodopsin-based phototrophy

Question 1

oxygenic photosynthesis.

Answer 1

In plants, algae and cyanobacteria,
end of photosynthesis releases oxygen
photosystem II & I used

Question 2

Anoxygenic photosynthesis

Answer 2

It is shown by purple bacteria, green sulfur and nonsulfur bacteria, heliobacteria and acidobacteria.
NO oxygen is released
Only one photsystem

Question 3

Rhodopsin-Based Phototrophy

Answer 3

used by archaea,
without the use of chlorophyll or bacteriochlorophyll
use a bacteriorhodopsin
used in the eyes

Question 4

Anoxygenic phototrophs have

Answer 4

bacteriochlorophylls, which are pigments that absorb light energy

Question 5

pigments used in oxygenic phototrophy

Answer 5

Chlorophylls,
carotenoids,
phycobiliproteins

Question 6

which photosystem does anoxygenic phototrophy have

Answer 6

Photosystem I
Can not have photo system II because it produces oxygen.
This has no oxygen

Question 7

Rhodopsin-Based Phototrophy relies on what for light absorption

Answer 7

non-chlorophyll based pigment called bacteriorhodopsin

see name in the word.

Question 8

what is bacteriorhodopsin exactly

Answer 8

pigment used to produce proton motiff force

it is a proton pump

Question 9

Is there electron transport in rhodopsin phototrophy

Answer 9

No

ATP made from proton force of protons from inside cell go outside cell

Question 10

What is similar about all three systems

Answer 10

They produce ATP
Proton motif force to make ATP.
The PMF is made differently by each one

Question 11

prokaryotic organism such as the cyanobacteria does not contain membrane-bound organelles like the chloroplasts. So how do they perform photosynthesis

Answer 11

They have chlorophyll dispersed in the infoldings of the plasma membrane that can perform photosynthesis. Example: Cyanobacteria (blue green algae)

Question 12

In normal plants, photosynthesis happens in two stages

Answer 12

Calvin cycle and light-dependent reactions in the chloroplast

Question 13

cyanobacteria uses

Answer 13

oxygenic photosynthesis

Question 14

All prokaryotic photosynthesizers are anoxygenic.

Answer 14

False

Question 15

All eukaryotic photosynthesizers are oxygenic.

Answer 15

true

Question 16

In the process of noncyclic photophosphorylation, ________.
A) water is split to form oxygen gas
B) electrons from water flow through electron transport chains resulting in synthesis of ATP and NADPH
C) photosystems I and II are both required
D) All of the choices are correct.

Answer 16

D–all are correct

Question 17

In the process of \_\_\_\_\_\_\_\_, ATP is synthesized when excited electrons from chlorophyll P700 pass through a series of electron carriers then return to chlorophyll P700.
A) photosynthesis
B) cyclic photophosphorylation
C) acyclic photophosphorylation
D) noncyclic photophosphorylation

Answer 17

B) cyclic photophosphorylation

Question 18

Photosynthetic electron transport in cyanobacteria takes place \_\_\_\_\_\_\_\_.
A) on the plasma membrane
B) in the chloroplast
C) in the cytoplasm
D) on the thylakoid membranes

Answer 18

D) on the thylakoid membranes

Question 19

what is phototrophy

Answer 19

The ability of the cell/microbe to capture light and use it to synthesize ATP and generate reducing power .

Question 20

what is photsynthesis

Answer 20

ATP and reducing power derived from light energy and used to reduce and fix carbon dioxide.
It have two parts: light reactions and dark reactions

Question 21

3 types of phototrophy

Answer 21

oxygenic phototrophy,
anoxygenic phototrophy
rhodopsin based phototrophy.

Question 22

final electron acceptor for oxygenic photosynthesis.

Answer 22

water

Question 23

Why is NADPH not produced in the anoxygenic photosynthesis

Answer 23

NADPH is not produced as the electrons are cycled back to the system

Question 24

in Oxygenated photosynthesis how is ATP produced

Answer 24

noncyclic photophosphorylation

they are cyanobacteria

Question 25

in AnOxygenated photosynthesis how is ATP produced

Answer 25

cyclic photophosphorylation | they are Purple and green bacteria

Question 26

Halophilic archea

Answer 26

phototrophic not photosynthesis

Question 27

metabolism of a chlorophyll–based phototroph. In oxidative phosphorylation during cell respiration, the source of energy is ________ where in photophosphorylation the source of energy is ________. A) highly reduced organic compounds; light B) NADH; NADPH C) electron transport chain; chlorophyll D) ATP; light

Answer 27

A) highly reduced organic compounds; light

Question 28

``` How many molecules of ATP are needed to reduce one molecule of carbon dioxide to carbohydrate by oxygenic phototrophs during the dark reactions of photosynthesis? A) 2 B) 3 C) 4 D) 10–12 ```

Answer 28

3

Question 29

``` How many molecules of NADPH are needed to reduce one molecule of carbon dioxide to carbohydrate by oxygenic phototrophs during the dark reactions of photosynthesis? A) 2 B) 3 C) 4 D) 10–12 ```

Answer 29

2

Question 30

``` Chlorophyll a and chlorophyll b as well as the accessory pigments are arranged in an antenna array with a reaction center chlorophyll. These antenna arrays with the reaction center chlorophyll are known as ________. A) reaction center systems B) photomembrane systems C) photosystems D) Calvin systems ```

Answer 30

C) photosystems

Question 31

In what ways are oxidative phosphorylation and photophosphorylation similar? A) The source of energy is highly reduced organic compounds B) An electron transport chain is used C) Proton motive force is generated D) Water is split to provide electrons E) ATP synthase enzyme phosphorylates ADP to make ATP

Answer 31

B) An electron transport chain is used C) Proton motive force is generated E) ATP synthase enzyme phosphorylates ADP to make ATP

Question 32

``` A modified cell membrane that carries out photosynthesis using bacteriorhodopsin in the absence of chlorophyll is called the ________ membrane. A) colorless B) orange C) purple D) green ```

Answer 32

C) purple

Question 33

Cyanobacteria are so named because many species have a blue-green appearance caused by the photosynthetic pigment phycocyanin.

Answer 33

true | phycocyanin

Question 34

Some cyanobacteria are not blue-green, rather they are red or brown; this is due to the presence of the photosynthetic pigment ________.

Answer 34

phycoerythrin

Question 35

Which of the following best describes cyanobacteria? A) They carry out anoxygenic photosynthesis. B) They carry out oxygenic photosynthesis. C) They all can use H2S as a source of electrons for photosynthesis. D) Their photosynthetic pigments are carried in chlorosomes.

Answer 35

B) They carry out oxygenic photosynthesis.

Question 36

Although similar to eukaryotic photosynthetic organisms, cyanobacteria are different because they ________. A) have only photosystem I not photosystem II B) have only photosystem II not photosystem I C) do not have chloroplasts D) do not have any photosynthetic membranes

Answer 36

C) do not have chloroplasts

Question 37

Cyanobacteria are prokaryotes that carry out oxygenic photosynthesis like green plants; this means that ________. A) they use water as their electron source B) they produce oxygen as a by-product of photosynthesis C) they have two distinct photosystems D) All of the choices are correct.

Answer 37

all choices correct

Question 38

``` Which of the following groups of photosynthetic bacteria are capable of oxygenic photosynthesis? A) The green bacteria B) The purple bacteria C) The cyanobacteria D) All of the choices are correct. ```

Answer 38

cyanobacteria or blue green

Question 39

``` Which of the following are photosynthetic bacteria? A) The green bacteria B) The purple bacteria C) The cyanobacteria D) All of the choices are correct. ```

Answer 39

all are correct