1|Page
Bio 139 KCTCS- Exam 1 (2026/2027) Updated:
EXAM QUESTIONS WITH ACCURATE ANSWERS |
GET IT RIGHT!!
What is the quick energy molecule used by organelles? - ANSWER -ATP
Write the chemical formula for photosynthesis. - ANSWER -6CO2 +
6H2O -> C6H12O6 + 6O2
Name the reactants of photosynthesis. - ANSWER -Water, CO2, sunlight
energy
Name the products of photosynthesis. - ANSWER -Oxygen, glucose
List the two phases of photosynthesis. - ANSWER -Light dependent
reactions, light independent reactions
In photosynthesis, what is light energy converted into? - ANSWER -
Chemical energy
In photosynthesis, what is the end result of the second phase? -
ANSWER -Simple sugars
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What's the job of a thylakoid? - ANSWER -Provide energy in the
chemiosmosis process
What's the job of a stroma? - ANSWER -Host the Calvin Cycle
What happens to the electrons as they pass down the electron
transport chain? - ANSWER -They are passed down from protein to
protein releasing energy
How are the electrons that are lost from chlorophyll molecules replaced
so that it can absorb light energy again? - ANSWER -Molecules of water
are split in the first photosystem (photolysis)
What is the other name given to the light independent reactions? -
ANSWER -Calvin Cycle
Write the chemical formula for cellular respiration. - ANSWER -C₆H₁₂O₆
+ O₂ → CO₂ + H₂O
What are the reactants of cellular respiration? - ANSWER -Oxygen,
glucose
What are the products of cellular respiration? - ANSWER -ATP, CO2,
water
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How many ATP molecules are formed during Glycolysis? - ANSWER -2
How many ATP molecules are formed during the Citric Acid Cycle? -
ANSWER -1
How many ATP molecules are formed during the Electron Transport
Chain? - ANSWER -32
How are the Calvin Cycle and the Kreb Cycle similar? - ANSWER -
Molecules used in the first reaction are also one of the end products
Name the anaerobic process that occurs after glycolysis. - ANSWER -
Lactic Acid Fermentation
Explain Lactic Acid Fermentation. - ANSWER -Process that supplies
energy when oxygen is scarce
Explain Alcoholic Fermentation. - ANSWER -Used by yeast cells and
some bacteria to produce CO2 and ethyl alcohol
What is heredity? - ANSWER -Passing on of characteristics from parents
to offspring
What is genetics? - ANSWER -Branch of biology that studies heredity
Bio 139 KCTCS- Exam 1 (2026/2027) Updated:
EXAM QUESTIONS WITH ACCURATE ANSWERS |
GET IT RIGHT!!
What is the quick energy molecule used by organelles? - ANSWER -ATP
Write the chemical formula for photosynthesis. - ANSWER -6CO2 +
6H2O -> C6H12O6 + 6O2
Name the reactants of photosynthesis. - ANSWER -Water, CO2, sunlight
energy
Name the products of photosynthesis. - ANSWER -Oxygen, glucose
List the two phases of photosynthesis. - ANSWER -Light dependent
reactions, light independent reactions
In photosynthesis, what is light energy converted into? - ANSWER -
Chemical energy
In photosynthesis, what is the end result of the second phase? -
ANSWER -Simple sugars
,2|Page
What's the job of a thylakoid? - ANSWER -Provide energy in the
chemiosmosis process
What's the job of a stroma? - ANSWER -Host the Calvin Cycle
What happens to the electrons as they pass down the electron
transport chain? - ANSWER -They are passed down from protein to
protein releasing energy
How are the electrons that are lost from chlorophyll molecules replaced
so that it can absorb light energy again? - ANSWER -Molecules of water
are split in the first photosystem (photolysis)
What is the other name given to the light independent reactions? -
ANSWER -Calvin Cycle
Write the chemical formula for cellular respiration. - ANSWER -C₆H₁₂O₆
+ O₂ → CO₂ + H₂O
What are the reactants of cellular respiration? - ANSWER -Oxygen,
glucose
What are the products of cellular respiration? - ANSWER -ATP, CO2,
water
, 3|Page
How many ATP molecules are formed during Glycolysis? - ANSWER -2
How many ATP molecules are formed during the Citric Acid Cycle? -
ANSWER -1
How many ATP molecules are formed during the Electron Transport
Chain? - ANSWER -32
How are the Calvin Cycle and the Kreb Cycle similar? - ANSWER -
Molecules used in the first reaction are also one of the end products
Name the anaerobic process that occurs after glycolysis. - ANSWER -
Lactic Acid Fermentation
Explain Lactic Acid Fermentation. - ANSWER -Process that supplies
energy when oxygen is scarce
Explain Alcoholic Fermentation. - ANSWER -Used by yeast cells and
some bacteria to produce CO2 and ethyl alcohol
What is heredity? - ANSWER -Passing on of characteristics from parents
to offspring
What is genetics? - ANSWER -Branch of biology that studies heredity
