Photosynthesis

Which wavelength(s) of light stimulates photosynthesis?

• Blue (400nm)

• Green (550nm)

• Both red and blue.

• Red (700nm)

Answer explanation

Green light is reflected so it can't stimulate photosynthesis.

Which of the following are products of the photosynthesis reaction?

• None of these.

Answer explanation

In photosynthesis carbon dioxide and water are reactants and combine to produce the products glucose and oxygen.

Which of the following is NOT an autotrophs?

• Bird

• Algae

• Cyanobacteria

• Plants

Answer explanation

Autotrophs make their own food - in the case through the process of photosynthesis.

Photosynthesis requires an input of energy from sunlight because it is a(n) ________ chemical reaction.

• Aerobic

• Anaerobic

Answer explanation

Photosynthesis is an anaerobic reaction meaning it doesn't require oxygen for the reaction to occur. It does however, actually produce oxygen as a product.

The reverse or opposite reaction of photosynthesis is know as ________.

• Reduction

• Fixation

• Respiration

• Regeneration

Answer explanation

The opposite of photosynthesis is respiration. It is the reaction that occurs in humans that uses glucose ad oxygen as reactants and produces oxygen and water which we give off when we breath.

What part of the chloroplast is C?

• Thyllakoid

• Stroma

• Granum

• Lumen

Answer explanation

Granum is a stack of thylakoids.

What part of the chloroplast is B?

• Thyllakoid

• Stroma

• Granum

• Lumen

Answer explanation

Stroma is the fluid found in the chloroplast.

What part of the chloroplast is D?

• Thyllakoid

• Stroma

• Granum

• Lumen

Answer explanation

This is the thyllakoid. Inside of the thyllakoid is the lumen where the light dependent reaction occurs.

What occurs in the lumen?

• The light dependent reaction.

• The light independent reaction.

• The Calvin Cycle.

• None of these.

Answer explanation

The light dependent reaction happens in the lumen which is inside the thyllakoid which are arranged in stacks called geranium.

What part of the chloroplast is E?

• Thyllakoid

• Stroma

• Granum

• Inner Membrane

Answer explanation

This is the thyllakoid. Inside of the thyllakoid is the lumen where the light dependent reaction occurs.