WorksheetsBiology and Scientific Concepts Quiz
Total questions: 45
Worksheet time: 23mins
Which step of the scientific method involves forming a testable explanation?
Observation
Hypothesis
Experiment
Conclusion
In an experiment testing how sunlight affects plant growth, what is the independent variable?
Height of the plant
Amount of sunlight
Type of soil
Amount of water
Which variable is measured during an experiment?
Independent variable
Control
Dependent variable
Constant
On a graph, the dependent variable is usually found on the:
X-axis
Title
Legend
Y-axis
Why is a control group important?
It changes the dependent variable
It provides a comparison
It increases accuracy automatically
It proves the hypothesis is true
A hypothesis must be proven correct to be useful.
True
False
If the graph shows an upward trend, the dependent variable increases as the independent variable increases.
True
False
Which of the following is an example of qualitative data?
Plant height in centimeters
Number of leaves
Color of the leaves
Time in minutes
Which subatomic particle has a positive charge?
Electron
Neutron
Proton
Ion
Which type of chemical bond involves sharing electrons?
Ionic
Covalent
Hydrogen
Van der Waals
What is a molecule?
Single atom
Two or more atoms bonded together
A charged particle
An element
Which macromolecule is made of amino acids?
Carbohydrates
Lipids
Proteins
Nucleic acids
Which macromolecule stores genetic information?
Proteins
Lipids
Nucleic acids
Carbohydrates
Which macromolecule is the main source of quick energy?
Carbohydrates
Lipids
Proteins
Nucleic acids
Which macromolecule is used for long-term energy storage?
Carbohydrates
Lipids
Proteins
Nucleic acids
Enzymes function by:
Increasing activation energy
Lowering activation energy
Destroying substrates
Being consumed in reactions
Enzymes are specific to their substrates.
True
False
Which factor can affect enzyme activity?
Temperature
pH
Both temperature and pH
Neither
Which process moves molecules from high to low concentration without using energy?
Active transport
Diffusion
Endocytosis
Exocytosis
Which process requires energy to move molecules against the concentration gradient?
Passive transport
Diffusion
Active transport
Osmosis
What happens to a cell in a hypotonic solution?
It shrinks
It swells
No change
It divides
What happens to a cell in a hypertonic solution?
It shrinks
It swells
No change
It divides
Which process is an example of bulk transport for solid particles?
Phagocytosis
Pinocytosis
Diffusion
Osmosis
Which process is an example of bulk transport for liquids?
Phagocytosis
Pinocytosis
Active transport
Exocytosis
Where does photosynthesis occur?
Mitochondria
Chloroplast
Nucleus
Cytoplasm
Which equation correctly represents photosynthesis?
C6H12O6 + 6O2 → 6CO2 + 6H2O
6CO2 + 6H2O + light → C6H12O6 + 6O2
6CO2 + 6O2 → C6H12O6 + 6H2O
6H2O + 6O2 → C6H12O6 + 6CO2
What is the main purpose of photosynthesis?
Make ATP from glucose
Convert chemical energy into sunlight
Convert light energy into chemical energy
Break down glucose for energy
Which statement is true about ATP?
It stores genetic information
It is the main energy currency of the cell
It is a type of lipid
It is only made during photosynthesis
During cellular respiration, glucose is broken down into:
Amino acids
ATP, CO2, and H2O
Oxygen and water
Fatty acids
Which of the following best explains conservation of energy in cells?
Energy is destroyed during reactions
Energy can change forms but is never lost
Energy disappears when ATP is used
Energy is created from nothing
Which of the following best explains conservation of matter in cells?
Matter is destroyed when energy is released
Matter changes forms but is not created or destroyed
Matter disappears during cellular respiration
Matter is created when ATP is made
Which is a product of photosynthesis?
CO2
Glucose
ATP
Water
Which part of the cell regulates what enters and exits the cell?
Nucleus
Mitochondria
Cell membrane
Cytoplasm
Which of the following is true about enzymes?
They are consumed during the reaction
They speed up chemical reactions
They do not have specific substrates
They always require light
Which term describes a substance that speeds up a chemical reaction without being consumed?
Enzyme
Substrate
ATP
Product
Which macromolecule is composed of sugar molecules?
Proteins
Carbohydrates
Lipids
Nucleic acids
Which of the following processes does NOT require energy input from the cell?
Active transport
Endocytosis
Exocytosis
Diffusion
Which statement about osmosis is true?
Water moves from high solute to low solute concentration
Water moves from low to high solute concentration
Water moves from high to low water concentration
Water moves from low to high water concentration
Which statement correctly compares passive and active transport?
Passive transport requires ATP; active transport does not
Active transport requires ATP; passive transport does not
Both require ATP
Neither require ATP
Which molecule is broken down first to release energy during cellular respiration?
Lipids
Proteins
Glucose
ATP
Which is an example of facilitated diffusion?
Oxygen moving directly across the membrane
Glucose moving through a protein channel
Sodium being pumped against a gradient
Water being transported by vesicles
Which of the following correctly represents the flow of energy in photosynthesis and respiration?
Sun → Glucose → ATP → Heat
ATP → Sun → Glucose → Heat
Glucose → Sun → ATP → Heat
Sun → ATP → Glucose → Heat
True or False: In an isotonic solution, water moves in and out of the cell at equal rates.
True
False
Which statement about chloroplasts and mitochondria is correct?
Both perform photosynthesis
Both produce ATP
Chloroplasts store genetic info
Mitochondria capture light energy
Which statement about enzymes is false?
Enzymes are proteins
Enzymes can be reused multiple times
Enzymes increase activation energy
Enzymes are substrate-specific
