Chapter 5 Photosynthesis and Respiration Flashcards
(28 cards)
Where does all life ultimately get their energy from?
the sun
What are autotrophs?
organisms that convert light or chemical energy into energy to make food
Where do autotrophs get their energy from?
the sun
What are heterotrophs?
organisms that must get energy from food
Where do heterotrophs get their energy from?
they consume other autotrophs or heterotrophs
Describe how photosynthesis and respiration are processes that depend on one another.
Photosynthesis gets light energy and converts it into sugars and respiration breaks down the sugar to make energy
What molecule is a source of energy for all cells?
ATP
Where does the light reaction take place?
thylakoid membrane of chloroplast
What are the products of the light reaction?
O2, ATP, and NADPH
Where does the calvin cycle take place?
stroma of chloroplast
What are the products of the calvin cycle?
NADPH, sugar, and ATP
What are pigments?
molecules that absorb certain colors and reflect the rest
Give examples of pigments.
Chlorophyll a, chlorophyll b, and carotenoids
Which two products of the light reactions of photosynthesis will be used for the calvin cycle?
ATP and NADPH
Why is the calvin cycle known as the “carbon-fixation” cycle?
carbon from CO2 is “fixed” into C6H12O6 (glucose)
Why does cholorphyll a and b look green to the human eye?
It absorbs red and blue best but reflects green.
Why do carotenoids look orange and red to the human eye?
It reflects orange and red,
What is the order of photosynthesis?
light reaction and then calvin cycle
What is the order of cellular respiration?
glycolysis, kreb’s cycle, and ETC
Where is glycolysis located?
cytoplasm
products of glycolysis?
NADH, and ATP
Where does the kreb cycle take place?
matrix of mitochondria
Where does ETC take place?
inner membrane of mitochondria
What are the products of the kreb’s cycle?
FADH2, CO2, and NADH