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WorksheetsBio- Unit 1: Intro to Life 2025
Total questions: 120
Worksheet time: 2hrs 58mins
What do you call the tiny cell structures inside a cell that carry out a specific function within the cell?
Biomolecules
Organelles
Cells
Atoms
What do you call the eukaryotic cells that have a cell wall, chloroplasts and a central vacuole.
Animal Cells
Bacterial Cells
Plant Cells
Viral Cells
Which type of cells have a membrane bound nucleus and membrane bound organelles?
Eukaryotic Cells
Prokaryotic Cells
Which type of cells do not have a membrane bound nucleus or any membrane bound organelles?
Prokaryotic Cells
Eukaryotic Cells
What do you call the jellylike substance between the cell membrane, organelles and the nucleus that fills the "empty" space in a cell?
Chromatin
Chromosomes
Microtubles
Cytoplasm
What is the barrier that protects the cell and regulates what substances enter and leave the cell and it is mainly composed of lipids?
Cell Wall
Cell Membrane
Nuclear Envelope
Endoplasmic Reticulum
What is the cell's control center that directs all activities of the cell?
Nucleolus
City Hall
Ribosome
Nucleus
What is the rigid layer of nonliving material that surrounds the cells of plants, it protects the cell and provides structure?
Cellulose
Cell Membrane
Cytoplasm
Cell Wall
Which organelle is known as the "powerhouse" of the cell because it converts energy in food molecules to energy the cell can use to carry out its functions?
Mitochondria
Chloroplasts
Lysosomes
Vacuoles
What do you call the organelles found only in plant cells that capture energy from sunlight and use it to produce food for the cell?
Mitochondria
Central Vacuole
Chloroplasts
Golgi Bodies
What are the three things that all cell types have in common?
Nucleus
Genetic Material
Cell Wall
Cell Membrane
Cytoplasm
Which organelle is colored purple in this photo?
Vacuole
Mitochondria
Nucleus
Ribosome
Which organelle is colored blue in this photo?
Nucleus
Cell membrane
Cell wall
Vacuole
Which of the following types of cells DO NOT have a nucleus?
Prokaryotes
Eukaryotes
Plants
Animals
___________a molecule that is present in all living cells and that contains the information that determines the traits a living thing inherits and needs to live.
Cell
Stimulus
Homeostasis
DNA
All living things grow and develop.
Living things are made up of units called
DNA
Cells
Homeostasis
Seeds
________ are small individual molecules that when linked together form a _______
polymers
monomer
carbohydrates
lipid
proteins
nucleic acid
monomers
polymer
Which biomolecule is a source of quick energy for cells?
carbohydrates
lipids
proteins
nucleic acids
Which biomolecule is involved in long term energy storage?
carbohydrates
lipids
proteins
nucleic acids
Which biomolecule plays a role in muscle development and repair?
carbohydrates
lipids
proteins
nucleic acids
If athletes "pasta load" the day before a big game, which biomolecule are they consuming the most of to stock up on a source of quick energy?
carbohydrates
lipids
proteins
nucleic acids
A mutation in DNA would initially start with which biomolecules?
carbohydrates
lipids
proteins
nucleic acids
Enzymes are special _______ that speed up chemical reactions.
carbohydrates
lipids
proteins
nucleic acids
DNA and RNA belong to this biomolecule group.
carbohydrates
lipids
proteins
nucleic acids
Which group of biomolecules contains glycerol and fatty acids?
carbohydrates
lipids
proteins
nucleic acids
The breakdown of ________ supplies immediate, quick energy for all cell activities.
carbohydrates
lipids
proteins
nucleic acids
Which of these is NOT a lipid
fats
oils
amino acids
waxes
Glucose, Lactose, and Sucrose all end in -ose. This means they are sugars...which group of biomolecules do they belong to?
carbohydrates
lipids
proteins
nucleic acids
Which group of biomolecules is involved in storing and transmitting genetic (hereditary) material?
carbohydrates
lipids
proteins
nucleic acids
A monosaccharide is the monomer for which biomolecule:
lipid
carbohydrate
nucleic acid
protein
Lipids have which of the following monomer:
glycerol & fatty acids
amino acids
monosaccharide
nucleotide
Which biomolecule has amino acids as their monomer?
carbohydrate
nucleic acid
lipid
protein
A banana is an example of which biomolecule
carbohydrate
lipid
protein
nucleic acid
C,H,O,N,P are the elements in
nucleic acid
protein
carbohydrate
lipid
Match the following functions to the biomolecule
Act as hormones
Lipid
Build muscle
Protein
Carry genetic information
Nucleic acid
Energy source (cellular respiration)
Carbohydrate
protein
nucleic acid
lipid
carbohydrate
protein
nucleic acid
lipid
carbohydrate
carbohydrate
lipid
protein
nucleic acid
protein
nucleic acid
lipid
carbohydrate
monosaccharide
amino acid
nucleotide
polysaccharide
What is homeostasis?
The process of maintaining a stable internal environment
The process of maintaining a constant body temperature
The process of breaking down food for energy
The process of eliminating waste from the body
What is negative feedback?
A feedback loop that amplifies a response
A feedback loop that inhibits a response
A feedback loop that doesn't affect the response
A feedback loop that occurs only in plants
The kidneys play a role in maintaining homeostasis by:
Regulating body temperature
Excreting excess water and waste products
Controlling voluntary body movements
Producing hormones for metabolism
What is the relationship between diabetes and insulin feedback loops?
Diabetes is caused by an overactive insulin feedback loop
Diabetes is caused by an underactive insulin feedback loop
Diabetes has no connection to insulin feedback loops
Diabetes only affects the kidneys' role in homeostasis
What is a stimulus?
A response to a change in the internal environment
A change in the external environment
The body's ability to maintain a constant temperature
The breakdown of proteins for energy
Thermoregulation refers to:
The process of maintaining a stable internal temperature
The process of digesting food to provide energy
The process of eliminating waste from the body
The process of controlling voluntary body movements
Metabolism is:
The process of maintaining a stable internal environment
The process of maintaining a constant body temperature
The process of breaking down food through chemical reactions for energy
The process of eliminating waste from the body
How does temperature affect proteins?
High temperatures denature proteins
Low temperatures denature proteins
Temperature has no effect on proteins
Temperature only affects the respiratory system
What is the difference between involuntary and voluntary methods of maintaining homeostasis?
Involuntary methods are controlled by conscious effort, while voluntary methods are automatic
Involuntary methods are automatic, while voluntary methods are controlled by conscious effort
Involuntary methods only affect the respiratory system, while voluntary methods affect the whole body
There is no difference between involuntary and voluntary methods of maintaining homeostasis
How does the respiratory system contribute to maintaining homeostasis?
By regulating body temperature
By eliminating waste products from the body
By producing insulin for glucose regulation
By controlling voluntary body movements
What is the difference between ectotherms and endotherms?
Ectotherms can maintain a constant internal temperature, while endotherms cannot
Ectotherms obtain heat from the environment, while endotherms generate heat internally
Ectotherms have a faster metabolism than endotherms
Ectotherms are found only in mammals, while endotherms are found in reptiles
When a lizard is hot, why does it lay on a rock?
To cool down by transferring heat to the rock
To warm up by absorbing heat from the rock
To regulate its blood sugar levels
To increase its metabolic rate
Which organisms complete homeostasis?
Only mammals
Only reptiles
All living organisms
Organisms with high metabolic rates
How does a stimulus affect homeostasis?
It disrupts the balance and triggers a response to restore homeostasis
It has no effect on homeostasis
It permanently alters the body's internal environment
It only affects voluntary methods of maintaining homeostasis
How are a thermostat and homeostasis similar?
They both control body temperature
They both regulate the respiratory system
They both respond to external stimuli only
They both involve feedback loops to maintain stability
What role does sweating play in homeostasis?
It increases body temperature during cold weather
It decreases body temperature by evaporative cooling
It eliminates excess proteins from the body
It regulates blood sugar levels
How does negative feedback regulate blood glucose levels?
By increasing insulin production when glucose levels are high
By decreasing insulin production when glucose levels are low
By increasing glucose production in the liver regardless of insulin levels
By decreasing glucose absorption in the intestines
Which of the following best describes the role of negative feedback in thermoregulation?
It prevents any change in body temperature
It amplifies changes in body temperature to maintain homeostasis
It corrects deviations in body temperature by initiating responses that bring the temperature back to normal
It has no role in regulating body temperature
What is the primary function of insulin in managing blood glucose levels?
To increase blood glucose levels by promoting glucose production in the liver
To decrease blood glucose levels by facilitating the uptake of glucose into cells
To break down dietary fats into simpler molecules
To stimulate the pancreas to release more digestive enzymes
What is the primary role of the pancreas in glucose metabolism?
To store glucose as glycogen for future use
To produce digestive enzymes that break down carbohydrates
To release insulin to help regulate blood sugar levels
To absorb glucose from the digestive tract
The term biosphere refers to the parts of Earth that contain
freshwater environments
living things
land masses
greater biodiversity
An individual living thing is called a(n)
species
cell
atom
organism
The basic unit of life is...
the cell
an atom
DNA
a species
A beneficial inherited trait is passed on to future generations is a(n)
stimulus
adaptation
system
homeostatic mechanism
At which stage of scientific inquiry would scientists find out if their hypotheses were supported by their data?
observing
testing hypotheses
analyzing data
evaluating results
In an experiment, the condition that is manipulated by a scientist is the
independent variable
dependent variable
constant
control condition
Which phrase best defines a gene?
basic unit of life
segment of DNA
slice of a specimen
inherited trait
Scientists use observation and data to form and test...
constants
hypotheses
theories
conclusions
During and experiment, which factors are observed and measured?
dependent variable
independent variable
constants
hypotheses
Similar organisms that can reproduce by interbreeding belong to the same
ecosystem
environment
habitat
species
All the chemical processes used to build up or break down materials are called an organism's
metabolism
homeostasis
adaptation
stimuli
What has to be true to be considered an Organism?
Have all 8 Characteristics of Life
Be made of Cells
Has to breathe
Have 6 or 7 out of the 8 Characteristics of Life (IF YOU READ THIS RESPONSE OUT LOUD YOU GET A DETENTION...ONLY LAUGH)
What cell process goes with Development?
Cell Differentiation
Energy Consumption
Adjusting to Environment
Cell Growth
Which type of scientific discovery involves testing one variable at a time?
Researching
Field Study
Using a model
Controlled Experiment
The group in an experiment in which the variable is being tested or manipulated
Control Group
Experimental Group
The group in an experiment that does not receive treatment
Control Group
Experimental Group
On a graph, which axis typically shows the independent variable?
x-axis
y-axis
neither
On a graph, which axis typically shows the dependent variable?
x-axis
y-axis
neither
After collecting data what do scientists typically do?
Write a conclusion
Analyze the data with graphs
Write a procedure
Create a hypothesis
"Which type of medium is best for plant growth?"
What is the DEPENDENT variable (effect) in this experiment?
"Does eating breakfast improve test score?"
eating breakfast or not
the grade you got on the test
what time you get up in the morning
how tasty the breakfast is
A scientist is studying if height and arm length are connected. What can the scientist conclude from this graph?
Height does not affect arm length.
Height does affect arm length for most people.
Height always affects arm length.
There is no trend so I would not be able to tell.
A scientist is testing which flavor of ice cream melts the fastest. What would his controlled variables be? (choose ALL that apply)
The flavor of ice cream
the bowl the ice creams are in
the place in the room where the ice cream is
the size of the scoop
the time it takes to melt
Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark all that apply.
She used different types of seeds/plants.
The plants are in different pots.
She did not plant very many plants.
Seed age might not make a difference.
What elements are present in a lipid molecule?
Carbon, Hydrogen, Oxygen
Carbon, Oxygen, Nitrogen
Hydrogen, Oxygen, Phosphorus
Carbon, Hydrogen, Sulfur
Which of the following is a characteristic of macromolecules?
They are small molecules
They can include nucleic acids
They do not contain carbon
They are large molecules
What elements are present in a protein molecule?
Carbon, Hydrogen, Oxygen, Nitrogen
Carbon, Hydrogen, Oxygen
Carbon, Hydrogen, Sulfur
Hydrogen, Oxygen, Phosphorus
Which of the following elements are found in ALL macromolecules? (Select all that apply).
