Biology
Chapter 5 Part !
Chapter 5 Part !
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Flashcards
equation for photosynthesis
CO2 + H2O + sunlight = O2 + Glucose
algae and coral have what kind of relationship
symbiotic
what powers photosynthesis
sunlight
sun is like ________ which activates _______
enzyme - formula
the process by which plants, algae and some microorganisms harness solar energy and convert it to chemical energy
photosynthesis
all life ultimately depends on what?
photosynthesis
what captures the sun's energy in photosynthesis
specialized pigments
organic compounds that absorb light
pigments
what gives pigments their color
reflected light
enzymes use the energy to build ____ from ______
glucose
carbon dioxide
plant uses ____ in the process releasing _____ gas
water
O2
electrons moved from H2O to CO2
transfer of electrons
redox
energonic/reduction
uses energy/gains electrons
exergonic/oxidation
releases energy/loses electrons
what does redox stand for
oxidation
reduction
reaction
first organisms were all what
heterotrophs
rise of photosynthesis radically altered earth how?
decreased CO2
lowered global temp
added O2 to atmosphere
protective ozone layer
what is the ozone layer
a layer of O2
ozone =
O3
ozone =
O3
evolution favored the development of photosyntheses bc photosynthetic organisms:
make their own food
short wavelength=
high energy
long wavelength=
low energy
the sun releases enegy in
waves
shorter wavelengths have ______ energy than longer wavelengths
higher
do all wavelengths reach earth?
no
we perceive the visible wavelengths as what
colors
what captures visible light
plant pigments
what specializes in absorbing different wavelengths
different pigments
what is sunlight that reaches earth's surgace
uv
what are photons made up of
atoms
photons are packets of
kinetic energy
chemically, lights are
photons
no pigment absorbs ______ light
green
only _____ light is useful for photosynthesis
absorbed
why are leaves green
plant pigments absorb almost every wavelength except for green
gas exchange occurs where
stomata
stomata is what
leaf pores
difference between stomata and stoma
stomata is plural for stoma
what is the sight of photosynthesis?
chloroplasts
