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BIO 150 c. questions and answers certified 2024
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BIO 150 c. questions and answers certified 2024
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BIO 150: Photosynthesis Question andanswers correctly solved (5 pgs)
photosynthesis is the use of - correct answer ✔sunlight to manufacture
carbohydrate
sunlight is - correct answer ✔ultimate source of energy in the biosphere
autotrophs - correct answer ✔photosynthetic organisms that make their own
food from ions and simple molecules "self feeder"
heterotrophs - correct answer ✔non-photosynthetic organisms that acquire
their sugars and other macro-molecules from other organisms
photosynthesis - correct answer ✔is crucial to life
heterotrophs are - correct answer ✔dependent on phototrophs/autotrophs
overall equation of photosynthesis - correct answer ✔6CO2+12H2O+light
energy ---> C6H12O6+6O2+6H2O
photosynthesis is an - correct answer ✔endergonic reaction (requires input
of energy, sunlight), reactants have less potential energy that the products
cellular respiration is an - correct answer ✔exergonic reaction
light reactions - correct answer ✔light energy is captured and transformed
into chemical energy (sunlight is converted into ATP and NADPH)
, dark reactions (calvin cycle) - correct answer ✔chemical energy n ATP and
NADPH is transformed into chemical energy n carbohydrates (doesn't require
light but is dependent on the ATP and NADPH generated in the light
reactions)
photosynthesis (prokaryotic) occurs at the - correct answer ✔plasma
membrane (no actual organelle)
photosynthesis (eukaryotic) occurs at the - correct answer ✔chloroplasts
(specific organelle)
chloroplast structure - correct answer ✔thylakoid (pigments found here),
grana (stack of thylakoid), stroma (liquid matrix)
light exists in discrete packets called - correct answer ✔photons
two major classes of pigments in plants - correct answer ✔chlorophylls,
carotenoids
chlorophylls - correct answer ✔chlorophyll a and b, absorb all light except
green (mainly blue and red), reason plants look green
carotenoids (accessory pigments) - correct answer ✔zeaxanthin and beta
carotene, appear yellow, orange, and red (absorb green and blues)
accessory pigments are more prominent in what season - correct answer
✔fall (leaves turn red, orange, and yellow)
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