Biology Chapt 4 (cells & energy)

An organism capable of synthesizing its own food from inorganic substances, using light or chemical energy. Green plants, algae, and certain bacteria are autotrophs.

Organelle that absorbs sunlight and uses it to drive the synthesis of organic compounds from carbon dioxide and water.

The process that converts light energy into chemical energy that is stored in glucose or other organic compounds; occurs in plants, algae, and certain prokaryotes.

An organism that obtains organic food molecules by eating other organisms or substances derived from them.

Pores on the leaf where O2 exits and CO2 enters

The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water.

A flattened, membranous sac inside a chloroplast. They often exist in stacks called grana that are interconnected; their membranes contain molecular "machinery" used to convert light energy to chemical energy.

Green pigment located in membranes within the chloroplasts of plants and algae and in the membranes of certain prokaryotes.

The first of two major stages in photosynthesis (preceding the Calvin cycle). These reactions, which occur on the thylakoid membranes of the chloroplast or on membranes of certain prokaryotes, convert solar energy to the chemical energy of ATP and NADPH, releasing oxygen in the process.

The second of two major stages in photosynthesis (following the light reactions), involving fixation of atmospheric CO2 and reduction of the fixed carbon into carbohydrate.

What is the balanced equation for photosynthesis?

What provides electrons for the light reactions?

See image

See image

What provides the carbon atoms that are incorporated into sugar molecules in the Calvin cycle?