Photosynthesis Quiz

**%%Photosynthesis%%** occurs in cell organelles called the chloroplast.

In the **%%light-dependent%%** stage of photosynthesis, light energy is used to make two molecules; NADPH and ATP.

ATP and NADPH require light, therefore they are called **%%light-dependent reactions.%%**

**The Calvin Cycle** (light-independent stage) of photosynthesis is the process where ATP, NADPH, and CO2 are used to make sugars.

The thylakoid membrane contains pigments, the most common being **%%chlorophyll%%**.

**%%Chlorophyll%%** absorbs red and blue light and reflects green.

**%%Chlorophyll%%** is part of the two systems that convert light energy into chemical energy. These systems are called photosystems.

**%%RuBisCo%%** is an enzyme that fixes carbon from the atmosphere.

**%%RuBisCo%%** is the most important enzyme in the world because it makes life out of air.

**%%RuBisCo%%** is the most abundant enzyme.

Hydrogen Ions from water move through an enzyme, **%%ATP Synthase%%**.

**%%ATP Synthase%%** adds a phosphate to a molecule called ADP to make **%%ATP%%**.

**%%ATP%%** is used as an energy source for many chemical reactions in cells.

**%%ATP%%** = cellular energy.

**%%Autotrophs%%** get their energy from “self.”

**%%Autotrophs%%** get their energy from sunlight.

Autotrophs use light energy to synthesize organic molecules.

**%%Heterotrophs%%** get their energy from “eating others.”

**%%Heterotrophs%%** are consumers of other organisms.

**%%Heterotrophs%%** consume organic molecules.

**%%Heterotrophs%%** depend on **%%autotrophs%%**.

The **%%chemical equation for photosynthesis%%** is 6CO2 + 6H2O + light energy = C6H16O6 + 6O2

Oxygen is a byproduct of **%%photosynthesis.%%**

Reactants = products.

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