Chapter 8-9 Flashcards
Heterotroph
Organisms that obtain energy from eating other organisms
Adenosine Triphosphate
ATP - principal compound cells use to store and release energy
Photosynthesis
Autotrophs use sun energy to convert water and CO2 into high energy carbs
Pigment
Light absorbing molecule
Chlorophyll
Plants principal pigment
Thylakoids
Photosynthetic membrane
Photosystem
Light collecting units of the chloroplast
Stroma
Region outside thylakoid membrane
NADP+
Electron carrier molecule in photosynthesis
Light-dependent reactions
First phase of photosynthesis; requires light
ATP Synthase
Protein that spans membrane and allows H ions to pass through
Calvin Cycle
Does not require light, uses ATP and NADPH from light reactions to produce sugars
Calorie
amount of energy needed to raise 1 gram of water 1 degree Celsius
Glycolysis
Splitting of sugar. First step of any kind of respiration
Cellular Respiration
Process that releases energy by breaking down glucose and other food molecules in the presence of energy
NAD+
Electron carrier in cellular respiration
Fermentation
Releases energy from food molecules by producing ATP in the absence of oxygen
Anaerobic
Don’t require oxygen
Aerobic
Requires oxygen
Krebs Cycle
Second stage of cellular respiration. Pyruvic acid is broken down into CO2 in a series of energy extracting reactions
ETC
Uses high energy electrons from Krebs cycle to convert ADP into ATP
Autotroph
An organism that makes its own food