Bio Chapter 8 Vocab

Energy

The ability to do work

Thermodynamics

The study of the flow and transformation of energy in the universe

Metabolism

All chemical reactions in a cell

Photosynthesis

Anabolic pathway that converts light energy from the sun to usable chemical energy

Cellular respiration

Catabolic pathway in which organic molecules are broken down to release energy for the use by the cell

Adenosine triphosphate(ATP)

Most important biological molecule that provides chemical energy

Thylakoid

Flattened, saclike membranes arranged in stacks that contain pigments

Granum

Stacks of thylakoids in the plant’s chloroplast

Stroma

Fluid-filled space outside the grana

Pigment

Light-absorbing colored molecules

Catabolic pathway

Releases energy

Anabolic pathway

Uses energy