chloroplasts/ photosynthesis quiz

label #1

Intermembrane space

label #2

Inner membrane

label #3

Granum

label #4

Lamella

label #6

Stroma

label #7

Thylakoid

label #8

Outer membrane

define pigment

substances that absorb light

What color of light is least effective for photosynthesis

green

What is Rf

retention factor

formula for Rf

distance substance travels/distance solvent travels

what are the two stages of photosynthesis

light dependent reactions and the light independent reactions aka Calvin cycle

roles of light independent reactions

Uses chemical energy produced in the light reaction to make glucose (sugars)

roles of light dependent reactions

pigments absorb light energy

Oxygen gas is produced

ATP is made

NADPH is made

what happens for oxygen to come out of the plant

when the light energy is absorbed it “excites” the electrons which are used in chemical reactions. When the plant needs more electrons it breaks water down into Hydrogen ions and oxygen gas. It releases the oxygen as waste.

Identify which subatomic particle (electron, neutron, proton) is involved in the first stage of photosynthesis.

electron

Identify the products of the first stage of photosynthesis?

ATP and NADPH

Identify the four steps of the light-dependent reaction

1. light energy absorbed through stomata

2. Light, carbon dioxide, and water move into the chloroplasts

3. light is absorbed by pigments which excites the electrons and water is broken down into Hydrogen ions and oxygen gas to give the plant more electrons and produce oxygen gas as waste

4. Light, water, electrons are used to make (2) molecules: ATP and NADPH

Describe the roles of ATP and NADPH

ATP: energy

NADPH: made from NADP+ and carries molecules and atoms

Define the Light Independent reaction (Calvin cycle

ATP and NADPH help carbon dioxide in making glucose

Know which reactant in the Photosynthesis equation is necessary in the light-independent reaction

Carbon dioxide

Know the 2 types of molecules that "drive" the Calvin Cycle

ATP and NADPH

where does the light dependent reactions occur

thylakoid

where does the light independent reactions occur

stroma

The splitting of Water molecules in the light independent reactions is essential because it provides ________

electrons to replace those lost by chlorophyll and hydrogen ions (protons)