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WorksheetsUnit 1 Biology Basics Test Review
Total questions: 89
Worksheet time: 1hrs 27mins
Ada and Elijah have decided to do an experiment testing how sunlight affects plant growth. The students choose the same type of plants, soil, pots and amount of water they give the plants. They also make sure each plant is put in their designated area for the same amount of time each day. One plant is placed outside; one in front of a window that only gets light for 1/2 the day, and one in a closet. The students collect data every day for two weeks. Their results show that the plant outside grew the most and the plant in the closet had the least amount of growth. What is the independent variable:
type of environment
type of soil
amount of light
A and B
When designing an experiment, scientists will test a relationship between a “cause” and an “effect.” The “effect” is known as the ____________.
dependent variable
constant
independent variable
control group
Five students each used the same ruler to measure the length of the same pencil. Their measurements were: 15.33 cm, 15.34 cm, 15.33 cm, 15.33 cm, 15.34 cm. The actual length of the pencil was 15.85 cm. Explain whether the students’ measurements were accurate, precise, both, or neither.
The measurements were precise but not accurate.
The measurements were accurate but not precise.
The measurements were both accurate and precise.
The measurements were neither accurate nor precise.
Write a hypothesis predicting a relationship between the following independent variable (IV), and dependent variable (DV). IV- amount of caffeine DV- breathing rate of goldfish
If the amount of caffeine increases, then the breathing rate of goldfish will increase.
If the amount of caffeine increases, then the breathing rate of goldfish will decrease.
If the amount of caffeine increases, then the breathing rate of goldfish will remain the same.
If the amount of caffeine decreases, then the breathing rate of goldfish will increase.
Identify the independent and dependent variables in the hypothesis : If students eat a high-protein breakfast, then they will score higher on their biology test.
Independent variable: eating a high-protein breakfast; Dependent variable: biology test score
Independent variable: biology test score; Dependent variable: eating a high-protein breakfast
Independent variable: breakfast type; Dependent variable: biology test score
Independent variable: eating a high-protein breakfast; Dependent variable: test duration
Identify the independent and dependent variables in the hypothesis: If a player practices longer, then he will score more points in the game.
Independent variable: practice time; Dependent variable: points scored
Independent variable: points scored; Dependent variable: practice time
Independent variable: game time; Dependent variable: practice time
Independent variable: practice time; Dependent variable: game played
Describe what constants are and why they make the results from an experiment more reliable/accurate. Also tell why a control group makes an experiment more accurate.
Constants are factors kept the same in all groups to ensure a fair test. They make results more reliable by reducing variables. A control group provides a baseline for comparison, making results more accurate.
Constants are the variables that are changed in every group to test different outcomes. They make results less reliable by introducing more variables. A control group is used to change the outcome of the experiment.
Constants are the results obtained from the experiment. They make results more accurate by being unpredictable. A control group is not necessary for accuracy.
Constants are the errors that occur during the experiment. They make results more reliable by increasing variability. A control group is used to confuse the results.
Which of the following terms represents the smallest part of an element that still has the properties of that element?
Cell
Matter
Atom
Molecule
Which particles determine the identity of an element?
Protons only
Neutrons and protons
Neutrons only
Protons and electrons
The subatomic particles that are lost, gained, or shared in chemical bonds are called (a) .
protons
atoms
neutrons
An atom is electrically neutral because…
neutrons balance the protons and electrons.
nuclear forces stabilize the charges
the numbers of protons and electrons are equal
the numbers of protons and neutrons are equal
The nucleus of an atom has all of the following characteristics EXCEPT that it (a) .
is positively charged
is very dense
contains nearly all of the atom’s mass
contains nearly all of the atom’s volume
Atoms of elements in the same group of the periodic table share the same (a) .
number of energy levels
number of valence electrons
atomic numbers
atomic masses
Life can exist under frozen surfaces in polar seas because…
water is less dense as a solid.
water is a terrific solvent.
water has a high surface tension.
water has a high specific heat.
When placed in water, oil does not dissolve and stays separate. This means oil is (a) and (b) .
hydrophilic
The most important element necessary for life that makes up EVERY macromolecule is
Hydrogen
Nitrogen
Carbon
Oxygen
The three components that make up the structure of the atom, including their charge and specific locations within the atom, are:
Protons (positive, nucleus), neutrons (neutral, nucleus), electrons (negative, electron cloud)
Protons (negative, nucleus), electrons (positive, electron cloud), neutrons (neutral, electron cloud)
Neutrons (positive, nucleus), protons (neutral, electron cloud), electrons (negative, nucleus)
Electrons (neutral, nucleus), protons (positive, electron cloud), neutrons (negative, nucleus)
Which of the following is a reason why water is considered awesome?
It has unique properties such as cohesion, high specific heat, and being a universal solvent.
It is the only liquid found on Earth.
It is always found in a solid state.
It does not interact with other substances.
If available, the body will always digest which macromolecule for energy first?
lipids
proteins
enzymes
carbohydrates
We obtain all of the macromolecules from the food that we eat except for (a) .
carbohydrates
proteins
Animals store most of their excess energy reserves as (a) because…
glucose; it is easy to break down.
fat; they store twice as much energy per gram.
protein; it is a compact source of energy in their bodies.
carbohydrates; they store twice as much energy per gram of glucose.
The macromolecules that make up the majority of the cell membrane’s structure are (a) .
lipids
proteins
enzymes
carbohydrates
The macromolecules that would most likely be involved in contracting muscles would be (a) .
lipids
proteins
enzymes
carbohydrates
There are several levels of protein structure, the most complex of which is quaternary. Why are there so many different ways our bodies make proteins?
We use them mainly for energy
The cell is not allowed to make only one shape of protein.
The form of the protein fits its function.
Both A and C
Polymers are formed and broken down by which specific types of reactions?
Polymers are formed by dehydration synthesis and broken down by hydrolysis.
Polymers are formed by hydrolysis and broken down by dehydration synthesis.
Polymers are formed by oxidation and broken down by reduction.
Polymers are formed by condensation and broken down by combustion.
The order in which each type of macromolecule is consumed by the body for energy is:
Carbohydrates first, then lipids, then proteins
Proteins first, then carbohydrates, then lipids
Lipids first, then proteins, then carbohydrates
Proteins first, then lipids, then carbohydrates
Which bonds are created when amino acids are join together to form a polypeptide?
peptide bonds
hydrogen bonds
phosphodiester bonds
disulfide bonds
Which of the following is an example of a carbohydrate?
Cellulose
Oil
Enzyme
RNA
Nucleic acids, including DNA and RNA, are the only macromolecule that contains (a)
Select ALL the correct answers: Which of the following are examples of lipids?
Phospholipids
Enzymes
Triglycerides
Amylose
A monomer is (a) building block of a macromolecule. A polymer is made of (b) repeating units.
Which of the following is a function of a protein?
Provide short term energy
Speed up chemical reactions
Store hereditary information
Warmth / insulation
Which macromolecule is shown?
lipid
protein
nucleic acid
carbohydrate
What is the definition of a dependent variable?
A variable that depends on another variable
A variable that is manipulated or changed by the researcher
A variable that is measured or observed in an experiment
A variable that remains constant throughout an experiment
Research question: How does the amount of sunlight affect the growth of a plant? Which of the following is an example of a dependent variable for this research question?
The hours of sunlight
The height of a plant
The type of plant
The amount of darkness
Research Question: Does the type of gasoline put in a car affect how fast the car can drive.
What is the independent variable?
Type of gasoline
which car the gas is put into
how fast the car can drive
how much gas is put into the car
In a line graph you will find the independent variable on .... axis and the dependent variable on .... axis
x , y
y, x
they can be switched
The ability of water molecules to stick to each other, creating surface tension is called:
Cohesion
Adhesion
Insulation
Ph
What property of water allows for water to act as a temperature regulator for the world?
Cohesive Behavior
Expansion Upon Freezing
High Specific Heat
Universal Solvent
Why does water move from the roots to the leaves of plants?
Water is pushed by solutes
Water is pulled by gravity
Capillary action pulls the water molecules like a chain
Water's cohesion causes it to "pull" towards the leaves
Water has an unusually high specific heat. What does this mean?
At its boiling point, water changes from liquid to vapor.
A large amount of heat is required to raise the temperature of water.
Ice floats in liquid water.
Salt water freezes at a lower temperature than pure water.
Floating ice can insulate bodies of water.
What characteristic is shown: A giraffe gives birth to a healthy
Reproduce
Genetic Code
Change Over Time
Acquire and Use Energy
What characteristic is shown: A bacteria cell divides itself in two.
Reproduce
Respond to a Stimulus
Homeostasis
Grow and Develop
Which characteristic is shown: An American alligator kills and eats a fish.
Change Over Time
Acquire and Use Energy
Grow and Develop
Made of Cells
Which characteristic is shown: A corn field absorbs sunlight to produce food.
Made of Cells
Respond to a Stimulus
Acquire and Use Energy
Genetic Code
Which characteristic is shown: A chocolate lab puppy becomes a fully grown dog.
Respond to a Stimulus
Grow and Develop
Homeostasis
Change Over Time
Which characteristic is shown: A tadpole grows legs and becomes a fully grown frog.
Homeostasis
Grow and Develop
Acquire and Use Energy
Change Over Time
Which characteristic is shown: A deer runs from a dog after hearing barking.
Made of Cells
Respond to a Stimulus
Acquire and Use Energy
Homeostasis
Which characteristic is shown: A plant switches position and follows the sunlight throughout the day.
Grow and Develop
Respond to a Stimulus
Acquire and Use Energy
Reproduce
Which characteristic is shown: Your body sweats to maintain body temperature.
Respond to a Stimulus
Homeostasis
Made of Cells
Change Over Time
Which characteristic is shown: Carbon Dioxide is used in your blood to maintain the blood pH.
Respond to a Stimulus
Homeostasis
Reproduce
Grow and Develop
Which characteristic is shown: An unknown organism is shown to have a cell wall and organelles.
Made of Cells
Homeostasis
Respond to a Stimulus
Reproduce
Which characteristic is shown: Organism A is found to have eukaryotic cells.
Made of Cells
Grow and Develop
Change Over Time
Reproduce
Which characteristic is shown: Humans have changed to now have many different types of skin color.
Made of Cells
Grow and Develop
Change Over Time
Reproduce
Which characteristic is shown: Many bacteria have become resistant to the antibiotics we use.
Respond to a Stimulus
Made of Cells
Change Over Time
Homeostasis
What characteristic is shown: An unknown organism is found to have the gene for producing oxygen in its DNA.
Genetic Code
Homeostasis
Reproduce
Acquire and Use Energy
What characteristic is shown: An unknown organism is found to have a small DNA circle referred to as a plasmid.
Genetic Code
Homeostasis
Respond to a Stimulus
Grow and Develop
Enzymes are an example of
Lipids
Carbohydrate
Protein
Nucleic Acid
What 3 letters do sugars typically end in?
Match the monomer "building block" to its polymer:
Protein
Amino Acid
Carbohydrate
Monosaccharide
Nucleic Acid
Nucleotide
Lipid
Glycerol + Fatty Acid
Match the following macromolecule to the image
Carbohydrate
Lipid
Protein
Nucleic Acid
Which student has the best argument based on the evidence gathered during their observations?
Student 1, The specimen is living because it is made of cells and responds to stimuli
Student 2, The specimen is not living because it did not grow or develop
Student 3, The specimen is living because it is made of cells and can move
Student 4, I dont care science sucks.
Which of the following is NOT a function of lipids in living organisms?
Energy storage
Insulation
Genetic information storage
Component of cell membranes
What type of bond forms between two amino acids during protein synthesis?
Hydrogen bond
Glycosidic bond
Phosphodiester bond
Peptide bond
