Biology Chapter 7 Flash Cards

Front 1

Electromagnetic Energy

Back 1

This is the term for the sun’s energy.

Front 2

Radiation

Back 2

This is the more common term for electromagnetic energy

Front 3

Photons

Back 3

Electromagnetic energy travels in waves, but it also behaves like individual particles, photons.

Front 4

Electromagnetic Spectrum

Back 4

This is the full range of electromagnetic radiation in the universe - it includes visible light and radio waves.

Front 5

Pigments

Back 5

These are molecules that absorb some visible light rays and reflect others.

Front 6

Absorption Spectrum

Back 6

This is the range of photons that a molecule is able to absorb.

Front 7

Carotenoids

Back 7

Plant pigment that absorbs photons of green, blue and violet. It reflects the red, orange and yellow.

Front 8

Chlorophyll

Back 8

Plant pigment that absorb blue, violet and red photons and reflects green and yellow.

Front 9

Autotrophs

Back 9

This is an organism that can produce it’s own food by photosynthesis.

Front 10

Chemosynthetic Autotrophs

Back 10

These use energy from inorganic molecules to make their own food.

Front 11

Photosynthetic Autotrophs

Back 11

These use sun and light energy to make their own food.

Front 12

Heterotrophs

Back 12

These are organisms that can not produce their own food.

Front 13

Cellular Respiration

Back 13

This is when organisms unlock the energy in food, which originally came from the sun.

Front 14

Aerobolic Respiration

Back 14

Resperation that is oxygen dependent.

Front 15

Photosynthesis

Back 15

This is when light energy is transformed into stored chemical energy. Light Dependent

Front 16

Reactions

Back 16

These are reactions that produce ATP and NADPH and take place in the presence of sun-light.

Front 17

NADPH

Back 17

This is an electron carrier; it helps carry hydrogen atoms from one molecules to another.

Front 18

Light Independent Reaction

Back 18

This is the reaction that uses the ATP and NADPH to form the glucose from carbon dioxide.

Front 19

Chloroplasts

Back 19

This is a cell organelle in which photosynthesis takes place.

Front 20

Thylakoids

Back 20

These are the flattened sacs within the chloroplasts.

Front 21

Grana

Back 21

These are the stacks of thylakoids.

Front 22

Stroma

Back 22

This is the fluid that surrounds that thylakoids; it contains the enzymes of the light independent reaction.

Front 23

Photocenters

Back 23

These are the networks that are located in the thylakoids.

Front 24

Chlorophyll a

Back 24

The photo centers capture and send photon energy towards these pigments.

Front 25

Photosystem II

Back 25

During non-cyclic electron flow, energized electrons eject from here.

Front 26

Electron Transport Train

Back 26

This is where the electrons go after the photosystem II ejects them; it then triggers the production of ATP.

Front 27

Photosystem I

Back 27

Energized electrons eject from here along with hydrogen ions, reduce NADP+ to NADPH

Front 28

Chemiosmosis

Back 28

This is when a cell uses potential energy in a concentration gradient in order to ATP.

Front 29

Carbon Fixation/ Calvin Cycle

Back 29

This is when photosynthetic organisms use the ATP and NADPH from the light-dependent reaction in order to build organic molecules from atmospheric carbon dioxide.