Chapter 7 Photosynthesis

Question 1

Photosyntesis

Answer 1

The process by which green plants and some other organisms use sunlight to synthesize foods from Carbon Dioxide and water.

Question 2

Formula for Photosynthesis

Answer 2

H2O+CO2+light= O2 + C6H12O6 (glucose)

Question 3

Autotrophs

Answer 3

Producers. Organisms that produce their own food through the process of photosynthesis. Are consumed by Heterotrophs

Question 4

Heterotrophs

Answer 4

Consumers. Organisms that feed on other organisms or decompose organisms for sustenance.

Question 5

Chemoautotrophs

Answer 5

Prokaryotes that use inorganic chemicals as their energy source

Question 6

Chloroplast

Answer 6

Organelle/structure in plant cells that is the site of photosynthesis

Question 7

Thylakoid Membrane

Answer 7

Part of the chloroplast. An internal system of interconnected membranes, that carry out the light reactions of photosynthesis.

Question 8

Chlorophyll

Answer 8

Green pigments found within the thylakoid membrane of chloroplasts that allow plants to absorb light.

Absorbs light most strongly in the blue portion of the electromagnetic spectrum

Question 9

Mesophyll

Answer 9

Green tissue in the interior of the leaf where most of the chloroplasts are concentrated

Question 10

Stomata

Answer 10

Tiny pores in the leaf that allow carbon dioxide to enter and oxygen to exit the leaf.

Mouth of the plants.

Question 11

Structure of the Chloroplasts

Answer 11

1) Stroma

2) Thylakoid Membrane

Question 12

Stroma

Answer 12

Thick fluid within an inner compartment. One of the two structures of the chloroplast.

Question 13

Redox Process

Answer 13

Oxidation+Reduction

Question 14

Oxidation

Answer 14

Gain of oxygen.

Eventually causes things to deteriorate

Question 15

Reduction

Answer 15

Loss of oxygen

Question 16

Photosynthesis as a redox process

Answer 16

Co2 reduced to sugar as electrons and Hydrogen ions from water are added to it.

Water molecules are oxidized when they lose electrons along the hydrogen ions.

Question 17

Light Reactions

Answer 17

Reaction where Energy from sun is captured and stored. They occur in Thylakoid Membranes.

Light energy is absorbed by the Chlorophyll molecules - NADP+ is reduced to NADPH

Question 18

Dark Reactions

Answer 18

Reactions where energy is used to build sugar molecules.

Also known as the Calvin Cycle. Occurs in the stroma of the Chloroplast.

Question 19

Carbon Fixation

Answer 19

During the Calvin Cycle, CO2 is incorporated into organic compounds in a process called Carbon Fixation.

Question 20

Photon

Answer 20

Fixed quantity of light energy

Question 21

Photosystem

Answer 21

A number of light-harvesting complexes surrounding a reaction-center complex.

In other words, photosynthesis is a photosystem because it absorbs light energy and uses it to produce organic molecules.