1|Page
WGU C190 OA prep TEST FINAL EXAM AND PRACTICE
EXAM 20262027 BANK 2 VERSIONS QUESTIONS WITH
DETAILED VERIFIED ANSWERS EXAM QUESTIONS WILL
COME FROM HERE (100% CORRECT ANSWERS A+ GRADED
What best describes metabolism in living organisms? - ANSWERS--
Metabolism is all the chemical reactions in a cell that allow an organism
to grow, repair tissues, maintain homeostasis, and produce energy.
What process breaks down large molecules to release energy? -
ANSWERS--Catabolism.
What process builds large molecules from smaller ones using energy? -
ANSWERS--Anabolism.
What is the main energy currency of the cell? - ANSWERS--ATP
(adenosine triphosphate).
How does ATP release energy for cell functions? - ANSWERS--By losing
one phosphate group to form ADP.
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What is cellular respiration? - ANSWERS--The process by which cells
break down glucose into ATP.
Where does glycolysis occur and what is produced? - ANSWERS--
Glycolysis occurs in the cytoplasm and produces a small amount of ATP
and pyruvate.
Where does the Krebs cycle occur, and what is released? - ANSWERS--
Mitochondria; carbon dioxide is released.
Which stage of cellular respiration produces the most ATP? - ANSWERS-
-Electron transport chain.
Why is oxygen necessary for aerobic respiration? - ANSWERS--Oxygen
accepts electrons at the end of the electron transport chain.
What happens when oxygen is absent? - ANSWERS--Cells use
fermentation to produce ATP.
What is fermentation? - ANSWERS--An anaerobic process that makes
ATP without oxygen.
What waste product forms in human muscle fermentation? -
ANSWERS--Lactic acid.
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What is photosynthesis? - ANSWERS--A process in which plants use
sunlight to produce glucose and oxygen from CO2 and water.
Where do light-dependent reactions occur? - ANSWERS--In the
thylakoid membranes of the chloroplasts.
What does the Calvin cycle produce? - ANSWERS--Glucose (sugar).
Why is metabolism essential for living things? - ANSWERS--It allows
organisms to grow, repair, reproduce, and maintain homeostasis.
Which molecule stores the energy cells use for immediate work? -
ANSWERS--ATP.
How are catabolic and anabolic reactions linked? - ANSWERS--
Catabolism provides the energy needed for anabolism.
What happens to glucose during cellular respiration? - ANSWERS--It is
broken down into CO2 and H2O, releasing energy as ATP.
What is biology? - ANSWERS--Biology is the scientific study of life and
living organisms.
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What is a hypothesis? - ANSWERS--A hypothesis is a testable prediction
about how something works.
What is a theory? - ANSWERS--A well-tested explanation of natural
phenomena.
What is the difference between a hypothesis and a theory? - ANSWERS-
-A hypothesis is a prediction; a theory explains observations.
What is a controlled experiment? - ANSWERS--An experiment where
only one variable is changed at a time.
What is an independent variable? - ANSWERS--The factor that is
deliberately changed in an experiment.
What is a dependent variable? - ANSWERS--The factor that is measured
in an experiment.
What is a control group? - ANSWERS--A group in an experiment that
does not receive the experimental treatment.
What are the characteristics of life? - ANSWERS--Living things grow,
reproduce, respond to stimuli, use energy, maintain homeostasis, and
evolve.
WGU C190 OA prep TEST FINAL EXAM AND PRACTICE
EXAM 20262027 BANK 2 VERSIONS QUESTIONS WITH
DETAILED VERIFIED ANSWERS EXAM QUESTIONS WILL
COME FROM HERE (100% CORRECT ANSWERS A+ GRADED
What best describes metabolism in living organisms? - ANSWERS--
Metabolism is all the chemical reactions in a cell that allow an organism
to grow, repair tissues, maintain homeostasis, and produce energy.
What process breaks down large molecules to release energy? -
ANSWERS--Catabolism.
What process builds large molecules from smaller ones using energy? -
ANSWERS--Anabolism.
What is the main energy currency of the cell? - ANSWERS--ATP
(adenosine triphosphate).
How does ATP release energy for cell functions? - ANSWERS--By losing
one phosphate group to form ADP.
,2|Page
What is cellular respiration? - ANSWERS--The process by which cells
break down glucose into ATP.
Where does glycolysis occur and what is produced? - ANSWERS--
Glycolysis occurs in the cytoplasm and produces a small amount of ATP
and pyruvate.
Where does the Krebs cycle occur, and what is released? - ANSWERS--
Mitochondria; carbon dioxide is released.
Which stage of cellular respiration produces the most ATP? - ANSWERS-
-Electron transport chain.
Why is oxygen necessary for aerobic respiration? - ANSWERS--Oxygen
accepts electrons at the end of the electron transport chain.
What happens when oxygen is absent? - ANSWERS--Cells use
fermentation to produce ATP.
What is fermentation? - ANSWERS--An anaerobic process that makes
ATP without oxygen.
What waste product forms in human muscle fermentation? -
ANSWERS--Lactic acid.
,3|Page
What is photosynthesis? - ANSWERS--A process in which plants use
sunlight to produce glucose and oxygen from CO2 and water.
Where do light-dependent reactions occur? - ANSWERS--In the
thylakoid membranes of the chloroplasts.
What does the Calvin cycle produce? - ANSWERS--Glucose (sugar).
Why is metabolism essential for living things? - ANSWERS--It allows
organisms to grow, repair, reproduce, and maintain homeostasis.
Which molecule stores the energy cells use for immediate work? -
ANSWERS--ATP.
How are catabolic and anabolic reactions linked? - ANSWERS--
Catabolism provides the energy needed for anabolism.
What happens to glucose during cellular respiration? - ANSWERS--It is
broken down into CO2 and H2O, releasing energy as ATP.
What is biology? - ANSWERS--Biology is the scientific study of life and
living organisms.
, 4|Page
What is a hypothesis? - ANSWERS--A hypothesis is a testable prediction
about how something works.
What is a theory? - ANSWERS--A well-tested explanation of natural
phenomena.
What is the difference between a hypothesis and a theory? - ANSWERS-
-A hypothesis is a prediction; a theory explains observations.
What is a controlled experiment? - ANSWERS--An experiment where
only one variable is changed at a time.
What is an independent variable? - ANSWERS--The factor that is
deliberately changed in an experiment.
What is a dependent variable? - ANSWERS--The factor that is measured
in an experiment.
What is a control group? - ANSWERS--A group in an experiment that
does not receive the experimental treatment.
What are the characteristics of life? - ANSWERS--Living things grow,
reproduce, respond to stimuli, use energy, maintain homeostasis, and
evolve.
