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WorksheetsBiology Unit 1 Review
Total questions: 73
Worksheet time: 37mins
Fill in the blank: _______ is an objective, verifiable observation.
Fact
Opinion
Assumption
Belief
Fill in the blank: _______ is a statement based on repeated experimental observation that describes an aspect of the world.
Principle
Hypothesis
Assumption
Prediction
Fill in the blank: _______ is a broad concept or principle that describes how something occurs in nature.
Law
Theory
Hypothesis
Observation
Fill in the blank: _______ is an explanation of an observed phenomenon based on research.
Theory
Hypothesis
Observation
Experiment
Fill in the blank: _______ describes qualities using the senses.
Qualitative
Quantitative
Comparative
Subjective
Fill in the blank: _______ uses numbers and measurements to quantify something.
Quantitative
Qualitative
Descriptive
Subjective
Fill in the blank: Independent variable = __________
What is deliberately changed or manipulated in an investigation
What is measured in an investigation
What remains constant in an investigation
What is observed but not changed
Fill in the blank: Dependent variable = __________
What changes in response to the IV; what is measured
What is kept constant in the experiment
What the experimenter changes; independent variable
The control group in the experiment
Fill in the blank: Constants (controlled variables) = __________
Aspects of an experiment that are kept constant/consistent
The variable that is changed in an experiment
The results measured in an experiment
The hypothesis being tested
Fill in the blank: Experimental group = __________
Group(s) being tested
Group(s) not being tested
Control group
Random sample
Fill in the blank: Control group = __________
Standard/"normal" group used for comparison
Group that always receives the experimental treatment
Group with the highest number of variables
Group that is never observed
Fill in the blank: Technology = __________
The application of scientific discoveries to meet human needs and goals through the development of products and processes
A form of entertainment used only for leisure purposes
A collection of random tools with no specific purpose
A natural phenomenon that occurs without human intervention
Fill in the blank: Engineering = __________
Applies scientific and mathematic principles to solve problems
Is only about building bridges
Focuses solely on computer programming
Is unrelated to mathematics
Define science. Science is _____________.
A study of the natural world based in experimentation and thus, supported by evidence.
A collection of untested beliefs and opinions.
A set of random guesses about the universe.
A fictional story about the world.
Give an example of a hypothesis in the correct format. Fill in the blank: If a sunflower is exposed to sunlight for 8 hours a day, then ____________.
it will grow taller than sunflowers exposed to less light.
it will not need water to survive.
it will turn blue in color.
it will stop growing completely.
Explain the relationship between independent and dependent variables within a hypothesis. Fill in the blank: The independent variable is the _______ and the dependent variable is the _______.
cause, effect
effect, cause
result, reason
outcome, initiator
An observation is a direct statement of what is seen, while an inference is a conclusion drawn from observations.
An observation is a direct statement of what is seen, while an inference is a conclusion drawn from observations.
An observation is a guess based on prior knowledge, while an inference is a measurement.
An observation is a conclusion, while an inference is a fact.
An observation is always incorrect, while an inference is always correct.
The difference between accuracy and precision, and the significance of having data that is both, can be described as:
Accuracy refers to how close measurements are to the true value, while precision refers to how close measurements are to each other; having both ensures reliable and valid data.
Accuracy and precision both mean the same thing in measurement.
Precision is about being close to the true value, while accuracy is about being consistent.
Having both accuracy and precision is not important in scientific data.
Fill in the blank: The first general step in designing and conducting an experiment is to ________
Make observations and ask questions
Analyze the results and draw conclusions
Publish the findings in a journal
Repeat the experiment several times
Fill in the blank: After making observations, the next step is to ________
Conduct background research to see what has already been found and define purpose for the experiment
Skip to drawing conclusions
Publish your results immediately
Ignore the data collected
Fill in the blank: The third step in designing and conducting an experiment is to ________
Construct a hypothesis
Analyze data
Collect results
Publish findings
Fill in the blank: The fourth step in designing and conducting an experiment is to ________
Test the hypothesis in an experiment
Collect background information
Analyze the data before testing
Publish the results before testing
Fill in the blank: The fifth step in designing and conducting an experiment is to ________
Analyze the data collected
Formulate a hypothesis
Identify the problem
Draw a conclusion
Fill in the blank: The final step in designing and conducting an experiment is to ________
Draw conclusions and communicate them to others
Collect background information
Formulate a hypothesis
Identify the variables
Give an example of a scientific investigation design, with appropriate constants and variables (IV and DV). Anh observes that her brother, who is a swimmer, can hold his breath for a really long time. She wonders if other types of athletes can hold their breath for just as long. She decides to conduct an investigation of different types of athletes and how long they can hold their breath. Fill in the blanks: - IV = ________ - DV = ________ - Constants = ________
IV = type of athlete (which sport they play), DV = how long they can hold their breath, Constants = age of athletes, temperature and conditions where the data is collected, pre-existing health conditions of any of the athletes, physical activities (or amount of rest) done prior to collecting the data, etc.
IV = how long they can hold their breath, DV = type of athlete (which sport they play), Constants = the number of athletes tested, the equipment used, and the time of day.
IV = age of athletes, DV = temperature and conditions where the data is collected, Constants = type of athlete (which sport they play), how long they can hold their breath.
IV = pre-existing health conditions, DV = physical activities done prior to collecting the data, Constants = type of athlete and how long they can hold their breath.
The general steps of the technological design process and the criteria that must be considered when designing a solution include:
Identifying the problem, researching, generating solutions, selecting the best solution, testing, and considering constraints such as cost, safety, and efficiency.
Only brainstorming ideas and immediately building a prototype without considering any criteria.
Focusing solely on aesthetics and ignoring functionality and safety.
Skipping research and testing phases to save time and resources.
Fill in the blank: The first step in the technological design process is to _________.
Define/identify the problem or need.
Build a prototype.
Test the solution.
Communicate the results.
Fill in the blank: When designing a solution for a problem, you must consider time, budget, and ________.
materials
weather
location
color
Fill in the blank: After designing a solution, the next step is to ________ the design by building the solution and testing it out.
implement
ignore
delay
abandon
Fill in the blank: The final step in the technological design process is to ________ the end result.
evaluate
ignore
delay
initiate
Fill in the blank: To conduct a scientific experiment, you should use appropriate laboratory equipment and make ______ measurements.
precise
random
vague
approximate
Fill in the blank: Organizing data from an experiment can be done in a chart, table, or ______, and then interpreting it.
graph
pencil
notebook
calculator
Fill in the blank: When analyzing data with respect to a hypothesis, you should draw an appropriate ______.
conclusion
graph
experiment
variable
Fill in the blank: When given the description of a scientific investigation, you should be able to select the most appropriate hypothesis and identify ______.
variables
conclusions
theories
predictions
Fill in the blank: __________ is anything that has mass and occupies space.
Matter
Energy
Light
Sound
Fill in the blank: __________ is the smallest part of an element that still has the properties of that element.
Atom
Molecule
Electron
Proton
Fill in the blank: The most basic unit of life is called a __________.
Cell
Tissue
Organ
Molecule
Fill in the blank: __________ is the measure of how difficult it is to stretch or break the surface of a liquid/resist an external force.
Surface tension
Viscosity
Density
Buoyancy
Fill in the blank: A uniform homogenous mixture of two or more substances is called a __________.
Solution
Compound
Element
Suspension
Fill in the blank: __________ is what gets dissolved in a solution.
Solute
Solvent
Mixture
Compound
Fill in the blank: Solvent = __________
What does the dissolving in a solution
What gets dissolved in a solution
A type of solute
A solid in a mixture
Fill in the blank: Hydrophilic = __________
"Water loving"; a substance that has an affinity for water
"Water fearing"; a substance that repels water
A substance that dissolves only in oil
A substance that is neutral to water
Fill in the blank: Hydrophobic = __________
"Water fearing"; a substance that does not have an affinity for water
"Water loving"; a substance that readily dissolves in water
A substance that increases the hydrogen ion concentration of a solution
A substance that acts as a buffer in water
List the six elements necessary for life and give examples of three molecules that contain those elements.
C, H, O, N, P, S. Examples: H2O, CO2, O2.
Na, Cl, K, Mg, Fe, Zn. Examples: NaCl, KCl, MgO.
He, Ne, Ar, Kr, Xe, Rn. Examples: HeO, NeO, ArO.
Al, Si, Pb, Hg, Au, Ag. Examples: Al2O3, SiO2, PbO.
List the levels of organization that make up an organism, starting with an atom and ending with an organism.
Atom → Molecule → Organelle → Cell → Tissue → Organ → Organ system → Organism.
Atom → Organelle → Molecule → Cell → Tissue → Organ system → Organ → Organism.
Atom → Molecule → Cell → Organelle → Tissue → Organ system → Organism.
Atom → Molecule → Organelle → Tissue → Cell → Organ → Organ system → Organism.
Differentiate between polar and nonpolar molecules.
Polar: unequal distribution of charges; polar molecules typically dissolve in water because water is also polar. Nonpolar: no separation of charge.
Polar: equal distribution of charges; polar molecules do not dissolve in water. Nonpolar: unequal distribution of charge.
Polar: no separation of charge; polar molecules are always gases. Nonpolar: unequal distribution of charges.
Polar: molecules with metallic bonds; nonpolar: molecules with ionic bonds.
The properties of water that make it such a unique molecule include:
Cohesion, adhesion, high specific heat, and polarity
Lack of hydrogen bonding and low surface tension
Non-polarity and inability to dissolve substances
Low heat capacity and no cohesive forces
What property of water makes water molecules stick to each other, creating a high surface tension in water?
Cohesion
Adhesion
Evaporation
Condensation
What property of water allows water molecules to stick to other types of molecules, allowing for capillary action in plants?
Adhesion
Cohesion
Evaporation
Condensation
Which property of water means it takes a lot of energy to change the temperature of water, so its temperature doesn’t fluctuate much and acts as a buffer to climate changes?
High specific heat
Low density
High surface tension
Low boiling point
Water being less dense as a solid is important for life because:
Ice floats, insulating aquatic life in winter.
It makes water evaporate faster.
It causes water to freeze from the bottom up.
It prevents water from dissolving salts.
Why is water called the universal solvent?
Because it dissolves more substances than any other liquid.
Because it is the only liquid found on Earth.
Because it is always pure.
Because it is colorless and tasteless.
Fill in the blank: Macromolecules are _____________.
Large organic molecules that make up all living things
Small inorganic molecules found in rocks
Simple sugars used for quick energy
Minerals required for plant growth
Fill in the blank: A Monomer is _____________.
Small basic sub-unit that makes up polymers
A large molecule made of many repeating units
A type of chemical reaction
A catalyst in biochemical reactions
Fill in the blank: A Polymer is _____________.
Larger more complex structure made of monomers
A type of small molecule found in cells
A single atom with unique properties
A gas that forms at high temperatures
Fill in the blank: A Monosaccharide is _____________.
Single sugar molecule; the monomer of carbohydrates
A type of protein found in muscles
A lipid used for long-term energy storage
A nucleic acid that stores genetic information
Fill in the blank: A Polysaccharide is _____________.
Larger sugar molecule; the polymer of carbohydrates
A type of protein found in muscles
A simple sugar molecule
A lipid used for energy storage
What is the monomer of carbohydrates?
Monosaccharide
Amino acid
Nucleotide
Fatty acid
What is the polymer of carbohydrates?
Polysaccharide
Amino acid
Nucleotide
Fatty acid
What is the monomer of lipids?
Fatty acids (but no true monomer)
Amino acids
Nucleotides
Monosaccharides
What is the polymer of lipids?
Triglycerides
Polysaccharides
Polypeptides
Nucleic acids
What is the monomer of proteins?
Amino acids
Fatty acids
Nucleotides
Monosaccharides
What is the polymer of proteins?
Polypeptide
Monosaccharide
Nucleotide
Fatty acid
What is the monomer of nucleic acids?
Nucleotides
Amino acids
Fatty acids
Monosaccharides
What is the polymer of nucleic acids?
Nucleic acids
Amino acids
Fatty acids
Monosaccharides
What is the main function of carbohydrates (CARBS)?
Energy storage molecule (short term) as well as structure, signaling, transport
Genetic information storage and transmission
Catalyzing biochemical reactions
Long-term energy storage and insulation
What is the main function of lipids?
Energy storage molecule (long term) as well as insulation, cushioning, structure and protection
Catalyze biochemical reactions in the body
Store genetic information and transmit it to offspring
Provide immediate energy for cellular processes
What is the main function of proteins?
Run your body and pretty much do everything else: enzymes, hormones, transport, muscles, movement, antibodies, receptors
Store genetic information for the cell
Provide long-term energy storage
Act as the main structural component of cell membranes
What is the main function of nucleic acids?
Informational molecule; the instructions for making proteins; store, transmit, and express your genetic information; they make you 'YOU'
Provide structural support to cells and tissues
Serve as a primary source of energy for cellular processes
Act as catalysts to speed up chemical reactions
Provide an example of a carbohydrate (carb) macromolecule.
Sugars (like glucose) and starches
Proteins (like hemoglobin)
Lipids (like triglycerides)
Nucleic acids (like DNA)
Provide an example of a lipid macromolecule.
Fats, oils, phospholipids, steroids
Glucose, fructose, galactose, sucrose
Hemoglobin, insulin, collagen, keratin
DNA, RNA, ATP, cAMP
Provide an example of a protein macromolecule.
Hemoglobin, insulin, collagen
Cellulose, starch, glycogen
DNA, RNA, ATP
Cholesterol, triglyceride, phospholipid
Provide an example of a nucleic acid macromolecule.
DNA and RNA
Glucose and Fructose
Hemoglobin and Myosin
Cholesterol and Triglyceride
