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WorksheetsCellular Energy Quiz
Total questions: 20
Worksheet time: 11mins
What does the First Law of Thermodynamics state?
Energy can be converted from one form to another but cannot be created or destroyed.
Energy can be created and destroyed.
Energy is always lost as heat.
Energy cannot be converted.
According to the Second Law of Thermodynamics, what happens to energy during conversion?
Energy is completely conserved.
Energy is lost as thermal energy.
Energy is created.
Energy is destroyed.
What is an example of the Second Law of Thermodynamics in nature?
A bear catching and eating a fish, losing usable energy.
A plant growing taller.
Water freezing into ice.
A car accelerating on a highway.
What is the primary source of energy for life on Earth?
The Moon
The Sun
The Ocean
The Wind
What are organisms called that make their own food using inorganic substances?
Heterotrophs
Autotrophs
Carnivores
Herbivores
Which of the following is an example of an autotroph?
Lions
Humans
Plants
Fungi
How do heterotrophs obtain their energy?
By producing their own food using sunlight
By eating other organisms
By absorbing sunlight directly
By converting sunlight into chemical energy
What role do autotrophs play in the energy flow from the sun?
They consume other organisms for energy
They convert sunlight into chemical energy
They directly use sunlight for movement
They store energy in the form of heat
What is metabolism?
The process of cell division
All of the chemical reactions inside a cell
The breakdown of food in the stomach
The movement of molecules across a membrane
What is a metabolic pathway?
A single chemical reaction in a cell
A series of reactions where the product of one is the reactant for the next
The movement of energy through a cell
The breakdown of proteins into amino acids
What happens in catabolic pathways?
Energy is stored in large molecules
Energy is released by breaking larger molecules into smaller ones
Energy is used to build larger molecules
Energy is transferred to the cell membrane
What is the role of anabolic pathways?
To release energy by breaking down molecules
To store energy in the form of ATP
To build larger molecules from smaller ones using energy
To transport molecules across the cell membrane
What is the main purpose of photosynthesis?
To convert chemical energy into light energy
To change light energy from the Sun into chemical energy
To produce carbon dioxide and water
To store energy in inorganic molecules
During photosynthesis, what are light energy, carbon dioxide, and water converted into?
Inorganic molecules and carbon dioxide
Organic molecules and oxygen
Oxygen and nitrogen
Water and glucose
How is energy stored during photosynthesis passed to other organisms?
Through the air
By water absorption
When an animal eats a plant
Through sunlight
What is the overall chemical equation for cellular respiration?
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Chemical Energy (in ATP)
C₆H₁₂O₆ + 6CO₂ → 6O₂ + 6H₂O + Chemical Energy (in ATP)
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ + Chemical Energy (in ATP)
6O₂ + 6H₂O → C₆H₁₂O₆ + 6CO₂ + Chemical Energy (in ATP)
Which stage of cellular respiration occurs in the cytosol and does not require oxygen?
Krebs cycle
Electron transport
Glycolysis
Photosynthesis
Where does the Krebs cycle occur and does it require oxygen?
Cytosol, does not require oxygen
Mitochondria, requires oxygen
Cytosol, requires oxygen
Mitochondria, does not require oxygen
What is the final stage of cellular respiration that occurs in the mitochondria and requires oxygen?
Glycolysis
Krebs cycle
Electron transport
Fermentation
