Chapter 6 Section One

17 terms by 9thSemesterOne 

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autotrophs

Organisms that use energy from sunlight's in inorganic substances to make organic compounds.

Photosynthesis

The process used my autotrophs to convert light energy from the sun into chemical energy in the form of organic compounds, primarily carbohydrates.

heterotrophs

Animals and other organisms that must get energy from food instead of directly from sunlight or inorganic substances

Biochemical pathway

A series of chemical reactions linked in which the product of one reaction is consumed in the next reaction.

Cellular respiration

A process when CO2 and water are produced, thus the products of photosynthesis and are reactants in cellular respiration.

Light reactions

First state of photosynthesis where light energy absorbed from the sun is converted to chemical energy, which is temporarily stored in ATP and the energy carrier molecule NADPH.

calvin cycle

Organic compounds are formed using CO2 and the chemical energy stored in ATP and NADPH.

photosynthesis equation

6CO2+6H20 yields C6 H12 O6 +6O2

chloroplasts

Organelles found in cells of plants and algae that absorb light in photosynthesis.

thylakoids

Inside the inner membrane, are arranged as flattened sacs that connect to form grana.

grana

Connected thylakoids

stroma

Surrounds the grana solution

visible spectrum

The result of a light passing through a prism in an array of colors ranging from red at one end to violet at the other is called the visible spectrum.

pigments

Compounds that absorb light.

carotenoids

Other compounds found on the thylakoid membrane including yellow, orange, and brown that function as necessary pigments.

photosystem

Cluster of pigment molecules and the proteins that the pigment molecules are embedded in. Slip into two groups (photosystem one and two) that contain similar kinds of pigments but have different roles in light reactions.

ATP synthase

An enzyme that harnesses the energy of protons that is located on the thylakoid membrane.

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