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Worksheets7th Unit 1 Test Review
Total questions: 50
Worksheet time: 38mins
Which of the following is a characteristic of life?
Ability to fly
Growth and development
Inability to move
Lack of response to stimuli
What is the difference between non-living and dead?
Non-living things were never alive; dead things were once alive
Non-living things can grow; dead things cannot
Non-living things can reproduce; dead things cannot
Non-living things can move; dead things cannot
Which of the following is NOT a component of cell theory?
All living things are made of cells
Cells are the basic unit of life
Cells can spontaneously generate
All cells come from pre-existing cells
Who is NOT one of the scientists who contributed to cell theory?
Hooke
Leeuwenhoek
Newton
Virchow
What is the main purpose of a microscope?
To magnify small objects
To heat substances
To measure temperature
To weigh objects
How do you calculate total magnification on a microscope?
Multiply the eyepiece magnification by the objective lens magnification
Add the eyepiece magnification to the objective lens magnification
Subtract the eyepiece magnification from the objective lens magnification
Divide the eyepiece magnification by the objective lens magnification
Which feature is characteristic of a prokaryotic cell?
Presence of a nucleus
Lack of a nucleus
Presence of mitochondria
Presence of chloroplasts
Which feature is a characteristic of a eukaryotic cell and NOT of a prokaryotic cell?
Lack of a nucleus
DNA in the form of chromosomes
Presence of ribosomes
Presence of a cell wall
How much do prokaryotic and eukaryotic cells differ in size?
Plant cells are bigger than animal cells
Prokaryotic cells are 5 times larger than eukaryotic cells
Eukaryotic cells are 5 times larger than prokaryotic cells
Prokaryotic cells are the same size as eukaryotic cells
Which organelle is responsible for energy production in a cell?
Nucleus
Mitochondria
Ribosome
Golgi apparatus
What is a key difference between plant and animal cells?
Plant cells have a cell wall; animal cells do not
Animal cells have chloroplasts; plant cells do not
Plant cells lack a nucleus; animal cells have one
Animal cells have a cell wall; plant cells do not
Which organelle is involved in photosynthesis?
Mitochondria
Chloroplast
Ribosome
Nucleus
What is the function of ribosomes in a cell?
Energy production
Protein synthesis
Photosynthesis
DNA replication
Which scientist is known for discovering cells?
Hooke
Einstein
Darwin
Curie
Which organelle is known as the "control center" of the cell?
Mitochondria
Nucleus
Ribosome
Golgi apparatus
What is the role of the cell membrane?
To produce energy
To control what enters and exits the cell
To synthesize proteins
To store genetic information
Which of the following is a reason why cell theory is important?
It explains the origin of life
It provides a framework for understanding living organisms
It describes the chemical composition of cells
It predicts the future of biological research
What is the function of the Golgi apparatus?
To synthesize proteins
To package and transport proteins
To produce energy
To store genetic information
What is the primary function of chloroplasts?
Energy production
Photosynthesis
Protein synthesis
DNA replication
Which organelle is responsible for breaking down waste in a cell?
Ribosome
Lysosome
Nucleus
Chloroplast
Which scientist is known for his work with microscopes?
Hooke
Leeuwenhoek
Virchow
Schleiden
What is the role of the cell wall in plant cells?
To control cell division
To provide structure and support
To synthesize proteins
To store energy
What is the function of the endoplasmic reticulum?
To produce energy
To transport proteins and lipids
To store genetic information
To break down waste
Which of the following is a feature of plant cells but not animal cells?
Cell membrane
Chloroplasts
Mitochondria
Ribosomes
What is the primary function of the nucleus?
To produce energy
To store and protect DNA
To synthesize proteins
To transport materials
Which part of a light microscope is used to adjust the amount of light passing through the specimen?
Stage clips
Diaphragm
Coarse focus knob
Objective lens
What is the correct order of steps when focusing a specimen under high power on a light microscope?
Start with the fine focus knob, then use the coarse focus knob
Only use the coarse focus knob
Only use the diaphragm
Start with the coarse focus knob, then switch to the fine focus knob
What is the function of the objective lenses on a light microscope?
To support the base of the microscope
To adjust the light intensity
To magnify the image of the specimen
To hold the slide in place
Which of the following is the correct order of steps in the scientific method?
Conclusion, Analysis, Experiment, Hypothesis, Observation
Experiment, Observation, Hypothesis, Analysis, Conclusion
Hypothesis, Observation, Experiment, Conclusion, Analysis
Observation, Hypothesis, Experiment, Analysis, Conclusion
What is the main purpose of using a model in scientific investigations?
To prove a hypothesis is correct
To avoid collecting data
To replace experiments entirely
To represent and explain complex systems or processes
In an experiment, what is the variable that is deliberately changed by the scientist called?
Constant variable
Dependent variable
Control variable
Independent variable
Which organelle is found in animal cells but usually not in plant cells?
Chloroplast
Vacuole
Cell wall
Centrioles
Who first observed and described cells in cork using a microscope?
Schwann
Hooke
Virchow
Leeuwenhoek
Which variable is measured as the outcome in an experiment?
Independent variable
Dependent variable
Control variable
Constant variable
What is the main purpose of having a control group in an experiment?
To test multiple variables at once
To increase the sample size
To provide a baseline for comparison
To change the dependent variable
Which of the following best describes a constant variable in an experiment?
A variable that is kept the same throughout the experiment
A variable that is measured as a result
A variable that is changed by the scientist
A variable that is not recorded
Which scientists are credited with formulating the cell theory?
Schleiden and Schwann
Darwin and Wallace
Watson and Crick
Curie and Pasteur
Which statement is part of the modern cell theory?
All cells contain a cell wall
All living things are made up of one or more cells
Cells can arise from non-living matter
Only animal cells have nuclei
What does the cell theory state about the origin of new cells?
New cells are created by chemical reactions
New cells arise only from pre-existing cells
New cells are formed by spontaneous generation
New cells form from non-living materials
Which of the following organisms is a prokaryote?
Bacterium
Fungus
Plant
Animal
What is the typical size range of most prokaryotic cells?
1–10 centimeters
100–1000 nanometers
0.1–5 micrometers
10–100 micrometers
Which statement best describes the size difference between prokaryotic and eukaryotic cells?
Both are the same size
Prokaryotic cells are generally larger than eukaryotic cells
Prokaryotic cells are generally smaller than eukaryotic cells
Prokaryotic cells are always visible to the naked eye
Which of the following best describes a scientific model?
A type of laboratory equipment
A set of experimental results
A simplified representation of a system or process
A physical object only
Which of the following is an example of a model used in science?
A diagram of the water cycle
A ruler
A microscope slide
A test tube
Which of the following best describes a variable in a scientific experiment?
A fixed value that never changes
A type of scientific theory
A tool used to collect data
A factor that can be changed or measured
What is the dependent variable in an experiment?
The variable that is not recorded
The variable that is changed by the scientist
The variable that is measured as a result
The variable that is kept constant
In a plant growth experiment, which of the following could be an independent variable?
The number of leaves on each plant
The type of ruler used to measure the plants
The height of the plants after two weeks
The amount of sunlight each plant receives
Euglena are unicelled organisms that live in pond water. They move around using a flagella and can perform photosynthesis when needed. They contain many organelles . What type of cells are they?
Animal Cell
Prokaryotic Cell
Eukaryotic Cell
Plant Cell
Students use a microscope to look for structures present in four different cells. The students placed an 'X' for each structure they saw in each cell.
Which cell that was viewed was most likely a prokaryote?
Cell W
Cell X
Cell Y
Cell Z
