Photosynthesis: Group Quiz!

Which part of the cell undergoes photosynthesis?

• Leaf

• Palisade Mesophyll Cells

• Chloroplast

• Nucleus

Answer explanation

Chloroplasts perform photosynthesis during the daylight hours. The immediate products of photosynthesis, NADPH and ATP, are used by the photosynthetic cells to produce many organic molecules.

Which products of light-dependent reactions are used in the Calvin Cycle to help form and reduced organic compounds?

• Oxygen, ATP, NADPH, & CO2

• ATP & NADPH

• Water & CO2

• Light, Water, & CO2

Answer explanation

The ATP and NADPH from the light-dependent reactions are used to make sugars in the next stage of photosynthesis, the Calvin cycle.

What happens during the regeneration stage of the Calvin Cycle (light-independent reactions)?

• The remaining G3P molecules that have not exited the cycle are used to re-form RuBP through a series of chemical reactions so that the Calvin cycle can continue.

• Energy from ATP and electrons from NADPH are used to reduce 3-phosphoglycerate to form G3P molecules which can be used to form other organic molecules such as glucose.

• The enzyme Rubisco attaches CO2 to RuBP causing the formation of molecules of 3-phosphoglycerate.

• Oxygen is produced through this process.

Answer explanation

Regeneration. It is the third stage of the Calvin cycle and is a complex process that requires ATP. In this stage, some of the G3P molecules are used to produce glucose, while others are recycled to regenerate the RuBP acceptor.

How many G3P molecules are needed to produce one molecule of glucose?

• 1

• 2

• 3

• 4 and more

Answer explanation

One of the G3P molecules leaves the Calvin cycle to contribute to the formation of the carbohydrate molecule, which is commonly glucose (C6H12O6).

In TEDEd's video discussion, what process is often called as the "Nature's Smallest Factory?"

• Light Dependent Reaction

• Photosynthesis

• Krebs Cycle

• Calvin Cycle

What enzyme is responsible for catalyzing RuBP and Carbon dioxide to form six molecules of 3-phospoglycerate?

• ReBisCO

• RuBP

• RuBisCO

• Hexokinase

In ATP Synthase of the thylakoid membrane, how many hydrogen ions (H+) are needed to produce one ATP molecule?

• 5

• 3

• 2

• 4

When excited electrons leaves photosystem II, how does photosystem II regains its lost electrons?

• By making its own electrons.

• By attracting water molecules.

• Through covalent bonding with Hydrogen ions

• By absorbing energy from the Sun.

What are the by-products of Light Dependent Reaction?

• Oxygen & ATP

• ATP & NADPH

• Oxygen, ATP, & NADPH

• Water Molecules

The excited electrons spent its energy to gather hydrogen ions (H+) from the Stroma to the thylakoid membrane. What transport is being pertained?

• Passive Transport

• Active Transport

• Facilitated Diffusion

• Passive Diffusion