Question 1

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes.
-PGAL molecules are formed from the reaction of PGA molecules with ATP and NADPH in this pathway.

Accepted Answer

The formation of PGAL molecules from PGA molecules with the help of ATP and NADPH occurs in the second stage of photosynthesis known as the Calvin-Benson cycle.

Question 2

Matching. Choose the one most appropriate description.
-The formation of glucose

Accepted Answer

The answer of Matching. Choose the one most appropriate description.
-The...

Question 3

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements.
-The final step that occurs during noncyclic ATP formation.

Accepted Answer

The final step in the noncyclic pathway of ATP formation is the reduction of NADP+ to NADPH.

Question 4

Matching. Choose the one most appropriate description.
-Carbon fixation

Accepted Answer

Carbon fixation refers to the process of incorporating carbon dioxide (CO2) into an organic molecule, typically through photosynthesis in plants or certain bacteria.

Question 5

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements.
-This results when chlorophyll gains electrons from water molecules.

Accepted Answer

Chlorophyll gains electrons from water molecules during the process of photolysis, which leads to the reduction of chlorophyll.

Question 6

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements.
-This process releases electrons to replace those lost from chlorophyll in noncyclic ATP formation.

Accepted Answer

Photolysis of water releases electrons that replace those lost from chlorophyll in noncyclic ATP formation.

Question 7

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes.
-This is a carbon-fixing system that separates two carbon fixations into night and day activities.

Accepted Answer

The CAM pathway (Crassulacean Acid Metabolism) separates carbon fixation into two separate stages: CO2 fixation during the night and Calvin-Benson cycle during the day. This allows plants to conserve water by opening their stomata at night when it is cooler and more humid. The other processes listed do not involve separate night and day activities.

Question 8

Matching. Choose the one most appropriate description.
-The PGA to PGAL conversion

Accepted Answer

The conversion of 3-phosphoglycerate (PGA) to glyceraldehyde-3-phosphate (PGAL) in the Calvin cycle uses ATP and NADPH as energy and reducing power, respectively.

Question 9

Matching. Choose the one most appropriate description.
-Noncyclic pathway of ATP formation

Accepted Answer

The noncyclic pathway of ATP formation produces ATP and NADPH. Option A describes the process of carbon fixation in photosynthesis. Option B describes the process of Calvin cycle in photosynthesis. Option C describes the process of glycolysis. Option E describes oxidative phosphorylation in cellular respiration.

Question 10

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes.
-In this process,carbon dioxide is incorporated first into an unstable intermediate compound and then into phosphoglycerate.

Accepted Answer

The answer of Classification. The processes listed below represent major...

Question 11

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements.
-When light energy is absorbed by a leaf,this will be the first result.

Accepted Answer

The first result of light absorption by a leaf is the excitation of chlorophyll.

Question 12

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements.
-High-energy phosphate bonds are formed during this process.

Accepted Answer

Phosphorylation of ADP is the process by which high-energy phosphate bonds are formed during the noncyclic pathway of ATP formation.

Question 13

Matching. Match the pigment with its relationship to sunlight.
-____ is responsible for red color in cyanobacteria.

Accepted Answer

Phycoerythrobilin is responsible for the red color in cyanobacteria and absorbs light in the green region of the spectrum, allowing the cells to capture additional energy from sunlight.

Answer: D
 Phycocyanobilin is another pigment found in cyanobacteria and absorbs light in the orange region of the spectrum, complementing phycoerythrobilin and allowing the cells to efficiently capture energy from sunlight.

Answer: E
 Beta-carotene is a pigment found in many plants, algae, and cyanobacteria, and is responsible for their orange color. It acts as a photoprotective agent, absorbing excess energy from sunlight and preventing damage to the cells.

Question 14

Matching. Match the pigment with its relationship to sunlight.
-____ absorbs only blue light.

Accepted Answer

Chlorophyll b absorbs blue light primarily, but also some red and orange.

Answer: B
 Chlorophyll a absorbs blue and red light most effectively, while also absorbing some violet and orange light.

Answer: C and D
 Phycoerythrobilin and phycocyanobilin are both pigments found in cyanobacteria (blue-green algae) and red algae, respectively. They absorb primarily in the blue and green wavelengths.

Answer: E
 Beta-carotene absorbs primarily in the blue-green to blue-violet range, with some absorption in the green and yellow-green ranges as well.

Question 15

Matching. Match the pigment with its relationship to sunlight.
-____ is the primary pigment in photosynthetic plants.

Accepted Answer

Chlorophyll a is the primary pigment in photosynthetic plants that captures light energy from sunlight.

Answer: A 
 Chlorophyll b is an accessory pigment that supplements the absorption of light energy by chlorophyll a.

Answer: C 
 Phycoerythrobilin is a phycobiliprotein pigment found in red algae that optimizes light absorption in deeper water.

Answer: D 
 Phycocyanobilin is a phycobiliprotein pigment found in cyanobacteria that optimizes light absorption in shallower water.

Answer: E 
 Beta-carotene is a carotenoid pigment found in plants that provides protection against damage from excessive sunlight.

Question 16

Matching. Match the pigment with its relationship to sunlight.
-____ causes some fruits and vegetables to appear orange or yellow.

Accepted Answer

Beta-carotene is a pigment responsible for the orange and yellow color in many fruits and vegetables. It is also a precursor for vitamin A, and is important for human health.

Other options:
A) Chlorophyll b and chlorophyll a are pigments involved in photosynthesis, but are not directly related to sunlight's effect on fruit and vegetable color.
C & D) Phycoerythrobilin and phycocyanobilin are pigments found in algae and are not commonly associated with fruit/vegetable color.

Question 17

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes.
-This yields NADPH as well as ATP.

Accepted Answer

The processes that yield NADPH and ATP are the light-dependent reactions. These reactions occur in the thylakoid membranes of chloroplasts and involve the absorption of light energy to convert ADP and NADP+ to ATP and NADPH, respectively.

Question 18

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes. - This carbon-fixing system uses CO₂ from inside the plant,and precedes the Calvin-Benson cycle.

Accepted Answer

The answer of Classification. The processes listed below represent major...

Question 19

Matching. Match the pigment with its relationship to sunlight.
-____ causes some protists to appear blue.

Accepted Answer

Phycocyanobilin is a pigment that absorbs red light and reflects blue light, causing some protists that contain it to appear blue. This pigment is particularly found in cyanobacteria and some other algae.

Question 20

Use the figure below to match the pigments' description with their absorption spectra.
Figure 6.5C

-Potent antioxidant and signaling molecule found in carrots

Accepted Answer

The answer of Use the figure below to match the...

Quiz 6: Where it Starts—Photosynthesis

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes. -PGAL molecules are formed from the reaction of PGA molecules with ATP and NADPH in this pathway.

Matching. Choose the one most appropriate description. -The formation of glucose

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements. -The final step that occurs during noncyclic ATP formation.

Matching. Choose the one most appropriate description. -Carbon fixation

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements. -This results when chlorophyll gains electrons from water molecules.

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements. -This process releases electrons to replace those lost from chlorophyll in noncyclic ATP formation.

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes. -This is a carbon-fixing system that separates two carbon fixations into night and day activities.

Matching. Choose the one most appropriate description. -The PGA to PGAL conversion

Matching. Choose the one most appropriate description. -Noncyclic pathway of ATP formation

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes. -In this process,carbon dioxide is incorporated first into an unstable intermediate compound and then into phosphoglycerate.

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements. -When light energy is absorbed by a leaf,this will be the first result.

Classification. The five reactions listed below occur during the noncyclic pathway of ATP formation. Use them to respond to the following statements. -High-energy phosphate bonds are formed during this process.

Matching. Match the pigment with its relationship to sunlight. -____ is responsible for red color in cyanobacteria.

Matching. Match the pigment with its relationship to sunlight. -____ absorbs only blue light.

Matching. Match the pigment with its relationship to sunlight. -____ is the primary pigment in photosynthetic plants.

Matching. Match the pigment with its relationship to sunlight. -____ causes some fruits and vegetables to appear orange or yellow.

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes. -This yields NADPH as well as ATP.

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes. - This carbon-fixing system uses CO2 from inside the plant,and precedes the Calvin-Benson cycle.

Matching. Match the pigment with its relationship to sunlight. -____ causes some protists to appear blue.

Use the figure below to match the pigments' description with their absorption spectra. Figure 6.5C -Potent antioxidant and signaling molecule found in carrots

Classification. The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes. - This carbon-fixing system uses CO₂ from inside the plant,and precedes the Calvin-Benson cycle.