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Standard XII
Biology
Question

In a bacterial photosynthesis, which of the following is present?
  1. PS- I is present
  2. PS- II is present
  3. Both PS- I and PS- II present
  4. None of the PS are present

A
PS- I is present
B
PS- II is present
C
Both PS- I and PS- II present
D
None of the PS are present
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Solution
Verified by Toppr

There are two types of photosystems, the photosystem I (PS- I) and the photosystem II (PS II). These are the structural and functional protein components in the photosynthesis. The photosytem I is present in the green and purple bacteria that conduct the bacterial photosynthesis where as the photosystem II is present in the cyanobacteria that conduct the normal plant photosynthesis.

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Similar Questions
Q1

Question 11
The correct sequence of flow of electrons in the light reaction is
(a) PS II, plastoquinone, cytochromes, PS I ferredoxin
(b) PS I, plastoquinone, cytochromes, PS II, ferredoxin
(c) PS I, ferredoxin, PS II
(d) PS I, plastoquinone, cytochromes, PS II, ferredoxin

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Q2
The sequential order in electron transport from PS II to PS I of photosynthesis is
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Q3

Splitting of water molecules during light reaction of photosynthesis is associated with

(a) PS I resulting in the release of O2, protons and transfer of electrons to PS II

(b) PS II resulting in release of O2, protons and transfer of electrons to PS I

(c) PS II resulting in release of O2, protons and transfer of electrons to PS II

(d) PS I resulting in the release of O2, protons and transfer of electrons to PS I.

Of the above statements


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Q4
Read the following statement and select the correct ones.
(i) PS I is involved in non-cyclic photophosphorylation only.
(ii) PS II is involved in both cyclic and non-cyclic photophosphorylation.
(iii) Stroma lamellae membranes possess PS I only, whereas grana lamellae membranes possess both PS I and PS II.
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Q5
Which "photosynthetic bacteria" possess both PS I and PS II
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