DCAT PHOTOSYNTHESIS (OVERVIEW & PHOTOSYNTHETIC PIGMENTS)

photosynthesis

The process of using sunlight to build up complex substances from simpler ones

chlorophyll

enables the plant to trap light energy and use it to make sugars.

light-dependent stage and light-independent stage

two main stages in photosynthesis

light-dependent stage

water is broken down into hydrogen and oxygen using light energy

light-independent stage

hydrogen reacts with carbon dioxide to form a carbohydrate

glucose

main substrate used in respiration

cellulose

glucose converted into carbohydrates that is used to form cell walls

sucrose

glucose converted into carbohydrates that is used for transporting to other parts of the plant

starch

glucose converted into carbohydrates that is used for storage

chloroplast

• green parts of a plant have this

• contains all the biochemical machinery necessary for the light-dependent and light-independent stages of photosynthesis

stroma

• each chloroplast consists of two membranes enclosing a gelatinous matrix called __

• contains ribosomes, circular DNA, and enzymes used in photosynthesis

thylakoids

• suspended in the stroma

• disc-like membrane sacs, several of which are stacked in a group to form a granum (plural grana)

thylakoid space

the space inside each thylakoid in a stack is connected with the other thylakoids in the stack, formed a continuous fluid-filled compartment called __