C1.3 MHS IB Bio Photosynthesis (SL level only)

The products of photosynthesis include

• water and carbon dioxide.

• glucose and oxygen.

• oxygen and carbon dioxide.

• carbon dioxide and glucose.

The energy that drives photosynthesis comes from

• light.

• geothermal heat.

• muscle contractions.

• chemical energy.

Select the groups of organisms that perform photosynthesis. (Multi select)

• cyanobacteria

• archaebacteria

• plants

• algae

Photosynthesis is a conversion of ___ energy to ___ energy

• kinetic; chemical

• light; chemical

• potential, kinetic

• chemical; light

This color of light reflects all wavelengths of visible light.

• black

• white

• green

• red

Light energy splits a water molecule into 4H⁺, 4e^-, and O₂ in a process called

• photolysis.

• hydrolysis.

• oxidation.

• reduction.

Longer wavelengths are at the _______ end of the visible light spectrum.

• blue

• red

The order of the colors of light that chlorophyll b absorbs best is (list from greatest to least)

• blue, red, green

• red, blue, green

• green, red, blue

• red, green, blue

The action spectrum represents the

• rate of photosynthesis.

• absorbance of light.

This graph could represent (check all that apply:

• The effect of light intensity on the rate of photosynthesis.

• The effect of carbon dioxide concentration on the rate of photosynthesis.

• The effect of temperature on the rate of photosynthesis.