Output of Light Reaction

Q.

Do plants photosynthesize at night?

Q.

What is chemosynthesis?

Q. During photochemical reaction of photosynthesis:

1. Liberation of $O_2$ takes place
2. Assimilation of $C{O}_2$ takes place
3. Formation of ATP and NADPH${}_2$ take place
4. Liberation of $O_2$, formation of ATP, and $NADPH$ take place

Q.

Why are C4 plants able to photosynthesize with no apparent photorespiration?

1. They use PEP carboxylase to initially fix CO2.

2. They are adapted to cold, wet climates.

3. They conserve water more efficiently.

4. They do not participate in the Calvin cycle.

Q.

Dark reactions occur only in absence of light.

1. True
2. False

Q. How are the light dependent and independent reactions dependent on each other?

Q. Which of the following statements with regards to photosynthesis is/are correct?
a. In $C_4$ plants, the primary $C{O}_2$ acceptor is PEP
b. In the photosynthetic process, PS II absorbs energy of $680\text{nm}$.
c. The pigment that is present in the pigment system is $P_{683}$, PFR.

1. b and c only
2. a only
3. c only
4. a and b only

Q. Which of the following is essential for the fixation of carbon dioxide during photosynthesis?

1. ATP
2. Reduced NADP
3. $ATP+NADP{H}_2$
4. $ATP+C{O}_2$

Q. During the process of photosynthesis, energy from sunlight is captured and used to produce sugar molecules. The energy that is stored in ATP and NADPH molecules is used to produce carbohydrates from carbon dioxide in the Calvin cycle.
Which of these describes the energy conversions that occur during photosynthesis?

1. Potential energy to chemical energy to kinetic energy.
2. Kinetic energy to chemical energy to potential energy.
3. Light energy to kinetic energy to potential energy.
4. Light energy to potential energy to chemical energy.

Q. The gain of noncyclic electron transport system during the light reaction of photosynthesis is :-

1. Glucose
2. Oxygen
3. $\text{ATP}$ and ${\text{NADPH}}_2$
4. Both $\text{(B)}$ and $\text{(C)}$

Q.

Where are light dependent reactions?

Q.

Light is required for the light dependent reactions because

1. it is the source for electrons

2. it energizes electrons in the reaction center

3. it splits the water molecule

4. it splits ATP molecules which generates the energy necessary to power the light independent reactions

Q. Light-dependent reactions include _______.

1. Absorption of sunlight
2. Splitting of $H_{2}O$ and release of $O_2$
3. Formation of ATP and NADPH
4. All of these

Q. Fullform of NADP is

1. Nicotinamide dinucleotide phosphate
2. Nicotine adenine dinucleotide phosphate
3. Nicotinamide adenine dinucleotide phosphate
4. None of the above

Q. During photochemical reaction of photosynthesis:

1. Liberation of $O_2$ takes place
2. Formation of ATP and NADPH${}_2$ take place
3. Liberation of $O_2$, formation of ATP, and $NADPH$ take place
4. Assimilation of $C{O}_2$ takes place

Q. is an important reducing agent produced as a byproduct of photosynthesis.

1. NAD
2. NADP
3. NADH
4. NADPH

Q. is an important reducing agent produced as a byproduct of photosynthesis.

1. NAD
2. NADP
3. NADH
4. NADPH

Q. Light-dependent reactions include _______.

1. Formation of ATP and NADPH

2. Absorption of sunlight

3. All of these

4. Splitting of H₂O and release of O₂

Q. From your understanding of the photochemical and $C{O}_2$ fixation reactions of photosynthesis, list those factors that dramatically influence photosynthesis.

Q. is an important reducing agent produced as a byproduct of photosynthesis.

1. NAD
2. NADP
3. NADH
4. NADPH

Q. The structure known as peroxisome is associated with

1. Photosynthesis.
2. Respiration.
3. Photorespiration.
4. Photophosphorylation.

Q. Which of the following statements with regards to photosynthesis is/are correct?
a. In $C_4$ plants, the primary $C{O}_2$ acceptor is PEP
b. In the photosynthetic process, PS II absorbs energy of $680\text{nm}$.
c. The pigment that is present in the pigment system is $P_{683}$, PFR.

1. b and c only
2. a only
3. c only
4. a and b only

Q. Choose the correct statement:

1. $\mathrm{NADH}$ produced in light reaction is used for reduction of ${\mathrm{CO}}_2$
2. Reduction of $\mathrm{NAD}$ to $\mathrm{NADH}$ occurs in Calvin cycle
3. S. Ochoa showed ${\mathrm{NADP}}^{+}$ is the biological electron acceptor in the chloroplast
   
4. Fixation and reduction of ${\mathrm{CO}}_2$ requires $\mathrm{ATP}$, $\mathrm{NADPH}$ and light

Q. Choose the correct statement:

1. S. Ochoa showed ${\mathrm{NADP}}^{+}$ is the biological electron acceptor in the chloroplast
   
2. Fixation and reduction of ${\mathrm{CO}}_2$ requires $\mathrm{ATP}$, $\mathrm{NADPH}$ and light
3. $\mathrm{NADH}$ produced in light reaction is used for reduction of ${\mathrm{CO}}_2$
4. Reduction of $\mathrm{NAD}$ to $\mathrm{NADH}$ occurs in Calvin cycle

Q. Which of the following is not a product of light dependent reaction of photosynthesis?

1. NADPH
2. Glucose
3. ATP
4. $O_2$