Photosynthesis

Which of the following components is not used by both plants and cyanobacteria to carry out photosynthesis?

• carbon dioxide

• chlorophyll

• chloroplasts

• water

Why are chemoautotrophs not considered the same as photoautotrophs if they both extract energy and make sugars?

• Chemoautotrophs use wavelengths of light not available to photoautotrophs

• Chemoautotrophs extract energy from inorganic chemical compounds

• Photoautotrophs prefer the blue side of the visible light spectrum.

• Photoautotrophs make glucose, while chemoautotrophs make galactose

In which compartment of the plant cell do the light-independent reactions of photosynthesis take place?

• mesophyll

• outer membrane

• stroma

• thylakoid

What is a part of grana?

• the Calvin cycle

• the inner membrane

• stroma

• thylakoids

What are two major products of photosynthesis?

• chlorophyll and oxygen

• oxygen and carbon dioxide

• sugars/carbohydrates and oxygen

• sugars/carbohydrates and carbon dioxide

What is the primary energy source for cells?

• glucose

• starch

• sucrose

• triglycerides

Which portion of the electromagnetic radiation originating from the sun is harmful to living tissues?

• blue

• green

• infrared

• ultraviolet

The amount of energy in a wave can be measured using what trait?

• color intensity

• distance from trough to crest

• the amount of sugar produced

• wavelength

What portion of the electromagnetic radiation emitted by the sun has the least energy?

• gamma

• infrared

• radio

• X-rays

What is the function of carotenoids in photosynthesis?

• 1. They supplement chlorophyll absorption.

• 1. They are visible in the fall during leaf color changes.

• 1. They absorb excess energy and dissipate it as heat.

• 1. They limit chlorophyll absorption.