WorksheetsCellular Energy Review
Total questions: 20
Worksheet time: 10mins
A student places a plant in sunlight and measures the bubbles produced from its leaves. These bubbles are most likely composed of:
Carbon dioxide
Oxygen
ATP
Glucose
Which inputs are needed for photosynthesis to occur inside chloroplasts?
Oxygen and glucose
Carbon dioxide and water
Water and nitrogen
Glucose and ATP
Cells that contain a large number of mitochondria are specialized for which process?
Active transport
Energy production
Photosynthesis
Protein synthesis
Which condition would decrease the rate of photosynthesis in a plant?
Reduced carbon dioxide concentration
Increased water supply
Increased light intensity
Stable temperature
Examine the diagram: (Glucose → ? → ATP + CO₂ + H₂O) Which process does the arrow represent?
Photosynthesis
Cellular respiration
Diffusion
Fermentation
A plant in a sealed chamber uses up all of the available carbon dioxide. What will happen?
Photosynthesis will slow down
Photosynthesis will increase
Which factor most directly influences the rate of photosynthesis in aquatic plants?
Availability of ATP
Oxygen levels in the water
Carbon dioxide concentration
Protein concentration
Which statement best explains the role of plants in the carbon cycle?
Plants release carbon dioxide as a waste product during photosynthesis
Plants use oxygen from animals to create carbon dioxide
Plants absorb carbon dioxide and convert it into glucose
Plants prevent animals from using oxygen
The direct products of aerobic respiration are:
Oxygen and ATP
Carbon dioxide, water, and ATP
Lipids and starches
Glucose and proteins
Which molecule is the primary fuel for cellular respiration?
Proteins
DNA
Glucose
Lipids
Compared to fermentation, aerobic respiration produces:
Less ATP
More ATP
Equal amounts of ATP
No ATP
A malfunctioning mitochondrion would directly affect which cellular activity?
Photosynthesis
Energy release
Protein folding
DNA replication
Muscle cells in marathon runners contain a high number of mitochondria. This adaptation is most likely because these cells:
Require more energy for sustained activity
Store more oxygen for protein synthesis
Need fewer enzymes to function
Use ATP only at night
The energy stored in ATP becomes available to a cell when:
A) A bond between two phosphates is broken
B) Oxygen is absorbed into mitochondria
C) Carbon dioxide is produced
D) Water diffuses across the cell membrane
Which of the following describes a key difference between photosynthesis and cellular respiration?
Photosynthesis produces glucose, while respiration breaks it down
Photosynthesis only occurs in mitochondria
Respiration requires light, while photosynthesis does not
Respiration produces oxygen, while photosynthesis consumes it
Which pair is correctly matched?
Protein – nucleotides
Carbohydrate – monosaccharides
Nucleic acid – fatty acids
Lipid – amino acids
Enzymes work best under specific conditions. If an enzyme functions best at 37°C and pH 7, what will most likely happen at 80°C?
The enzyme will speed up the reaction
The enzyme will denature and stop working
The enzyme will produce more ATP
The enzyme will increase oxygen levels
Which organelle is essential for photosynthesis?
Mitochondria
Nucleus
Chloroplast
Ribosome
Facilitated diffusion differs from simple diffusion because it:
Requires ATP energy
Uses protein channels
Moves molecules from low to high concentration
Moves only gases
Which process directly produces ATP that powers cellular activities?
Osmosis
Photosynthesis
Cellular respiration
Diffusion
