Photosynthesis in Higher Plants Test

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Photosynthesis in Higher Plants Test - 59

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Weekly Quiz Competition

Question 1
1 / -0

A universal hydrogen acceptor in an electron transport system is ___________.

A
ATP

B
UDP

C
NAD

D
FMN
Question 2
1 / -0

The Mitchell or charismatic hypothesis predicts the __________________________.

A
Existence of a higher pH in the endoplasmic reticulum than in the cytosol

B
Symmetrical distribution of ATPase of the inner membrane of the mitochondria

C
Synthesis of ATP as protons flow along a gradient across inner mitochondrial membrane

D
Absence of ATPase in the inner mitochondrial membrane

Solution

The chemiosmotic hypothesis was proposed by Peter Mitchell. This hypothesis stated that a proton-motive force was responsible for driving the synthesis of ATP. In this hypothesis, protons would be pumped across the inner mitochondrial membrane as electrons went through the electron transfer chain.
So the correct answer is option C.
Question 3
1 / -0

The following enzymes participate in the initial $$CO_2$$ fixation through Calvin cycle.
a. RUBISCO
b. Trios phosphate dehydrogenate
c. Phosphglyceric kinas
The correct sequence in which these enzymes participation in $$CO_2$$ fixation is?

A
$$1, 3, 2$$

B
$$2, 3, 1$$

C
$$1, 2, 3$$

D
$$3, 2, 1$$
Question 4
1 / -0

Which one of the following statements is not correct?

A
The magnesium atom in chlorophyll a carries the electrons involved in photosynthesis

B
Cytochromes are intrinsic proteins of chloroplast's thylakoid membrane

C
Ferredoxin has a large positive redox potential and tends to accept electrons

D
The phytol tails of chlorophyll a and chlorophyll are hydrophobic
Question 5
1 / -0

With reference to photosynthesis, what is the $$CF_0$$ - $$CF_1$$ complex?

A
ATP synthetase

B
Ferredoxin-NADP reductase

C
Cytochrome $$b6$$/f complex

D
RuBP carboxylase
Question 6
1 / -0

With reference to photosynthesis in chloroplasts, consider the following statements.
a. The reactions that break down water and produce oxygen are located on the lumen side of the thylakoid membrane, in granum areas.
b. The molecules of ferredoxin-NADP re-educate that generate NADPH are located on the side of the membrane facing stroma.
Which of the statements given is/are correct?

A
$$1$$ only

B
$$2$$ only

C
Both $$1$$ and $$2$$

D
Neither $$1$$ nor $$2$$

Question 7

1 / -0

Match List-I(Physiological events) with List II(Name of plants) and select the correct answer.

List I	List II
a. $$C_3$$ pathway of $$CO_2$$ fixation	$$1$$. Bryophyllum sp.
b. $$C_4$$ pathway of $$CO_2$$ fixation	$$2$$. Zea mays
c. CAM pathway of $$CO_2$$ fixation	$$3$$. Triticum aestivum
d. Guttation	$$4$$. Lycopeticon

A-$$2$$, B-$$3$$, C-$$4$$, D-$$1$$

A-$$2$$, B-$$3$$, C-$$1$$, D-$$4$$

A-$$3$$, B-$$2$$, C-$$4$$, D-$$1$$

A-$$3$$, B-$$2$$, C-$$1$$, D-$$4$$

Question 8
1 / -0

Mitochondrial morphology is maintained by balancing the active absorption of water and active secretion by the mitochondrion. Hence mitochondria are likely to swell in the presence of.

A
ATP

B
Hypertonic solution

C
Uncoupling agent

D
Enzymes catalyst oxidative phosphorylation
Question 9
1 / -0

Double fixation of $$CO_2$$ take place both in $$C_4$$ and CAM plants. Which one of the following statements brings out the main difference between the two?

A
The two carboxyl sing enzymes in two plants are different

B
$$CO_2$$ fixation in $$C_4$$ plants is separated by space, whereas in CAM plants, it is separated by time

C
The two pathways of $$CO_2$$ fixation are different in these two plants

D
The compensation points in these two plants are different
Question 10
1 / -0

Photosynthetic oxygen producing cells differ from non-oxygen producing cells in that the former.

A
Produce one ATP whereas the latter produce two

B
Produce no NADPI-$$1$$ whereas the latter do

C
Reduce ferredoxin whereas the latter do not

D
Contain and use both photo systems I and II

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Photosynthesis in Higher Plants Test - 59

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Photosynthesis in Higher Plants Test - 59

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SHARING IS CARING

Question 1

ATP

UDP

NAD

FMN

Question 2

Existence of a higher pH in the endoplasmic reticulum than in the cytosol

Symmetrical distribution of ATPase of the inner membrane of the mitochondria

Synthesis of ATP as protons flow along a gradient across inner mitochondrial membrane

Absence of ATPase in the inner mitochondrial membrane

Solution

Question 3

$$1, 3, 2$$

$$2, 3, 1$$

$$1, 2, 3$$

$$3, 2, 1$$

Question 4

The magnesium atom in chlorophyll a carries the electrons involved in photosynthesis

Cytochromes are intrinsic proteins of chloroplast's thylakoid membrane

Ferredoxin has a large positive redox potential and tends to accept electrons

The phytol tails of chlorophyll a and chlorophyll are hydrophobic

Question 5

ATP synthetase

Ferredoxin-NADP reductase

Cytochrome $$b6$$/f complex

RuBP carboxylase

Question 6

$$1$$ only

$$2$$ only

Both $$1$$ and $$2$$

Neither $$1$$ nor $$2$$

Question 7

A-$$2$$, B-$$3$$, C-$$4$$, D-$$1$$

A-$$2$$, B-$$3$$, C-$$1$$, D-$$4$$

A-$$3$$, B-$$2$$, C-$$4$$, D-$$1$$

A-$$3$$, B-$$2$$, C-$$1$$, D-$$4$$

Question 8

ATP

Hypertonic solution

Uncoupling agent

Enzymes catalyst oxidative phosphorylation

Question 9

The two carboxyl sing enzymes in two plants are different

$$CO_2$$ fixation in $$C_4$$ plants is separated by space, whereas in CAM plants, it is separated by time

The two pathways of $$CO_2$$ fixation are different in these two plants

The compensation points in these two plants are different

Question 10

Produce one ATP whereas the latter produce two

Produce no NADPI-$$1$$ whereas the latter do

Reduce ferredoxin whereas the latter do not

Contain and use both photo systems I and II

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