Font size
Worksheets🚀11.11
Total questions: 110
Worksheet time: 1hrs 10mins
During a chemical reaction, the total mass of the substances before the reaction is measured carefully using a balance. After the reaction has finished, the mass of all the products is measured again, making sure that nothing has been added or removed from the system. According to the law of conservation of mass, which is a fundamental principle in science, what does this law state about the mass before and after the reaction in a closed system, and why is this important for understanding chemical changes?
The mass before and after the reaction will be the same.
The mass after the reaction will be greater than before.
The mass before the reaction will be less than after.
The mass will always decrease after a reaction.
A student is performing an experiment where they burn a piece of magnesium ribbon inside a closed container. After the reaction, the student measures the mass of the container and everything inside it. Thinking about the law of conservation of mass, which states that matter cannot be created or destroyed in a closed system, which statement best explains what the student should observe and why?
The mass increases because new substances are created.
The mass remains unchanged because no matter enters or leaves the container.
The mass decreases because magnesium is used up.
The mass changes depending on the temperature.
A student mixes two clear solutions in a closed flask and observes the formation of a solid, which is called a precipitate. The student claims that the total mass has increased because a new substance appeared in the flask. Using your understanding of the law of conservation of mass, evaluate the student’s claim and explain what actually happens to the total mass during this chemical reaction.
The claim is correct because new mass is created.
The claim is correct if the solid is heavier than the solutions
The claim is incorrect because the total mass remains the same; the solid formed from existing substances.
The claim is incorrect only if the flask is open
Suppose you have a closed system where a chemical reaction produces a gas, such as when mixing an acid and a carbonate. You want to prove to your classmates that the mass is conserved during the reaction, even though a gas is formed. How would you design an experiment to demonstrate this, and what specific evidence would you collect to support your conclusion about the law of conservation of mass?
Ignore the mass and focus on the color change.
Open the system to let the gas escape and measure the mass.
Only measure the mass of the gas produced.
Weigh the system before and after the reaction to show the mass is unchanged.
Mitochondria are often called the "powerhouses" of the cell because they convert energy stored in food molecules into a form that cells can use. This process is known as cellular respiration, which produces ATP, the main energy currency of the cell. Why is ATP production by mitochondria important for maintaining cellular homeostasis?
It provides energy for cellular processes that keep the cell functioning properly.
It allows cells to store waste products.
It helps the cell divide rapidly.
It produces oxygen for the cell.
Chloroplasts are organelles found in plant cells that capture sunlight and use it to make food through photosynthesis. During this process, chloroplasts convert carbon dioxide and water into glucose and oxygen. How does photosynthesis in chloroplasts help plants maintain homeostasis?
By generating glucose, which provides energy and building materials for the plant.
By producing waste products for the cell.
By breaking down proteins into amino acids.
By removing all water from the cell.
The endoplasmic reticulum (ER) is a network of membranes within the cell that helps in the production and transport of proteins and lipids. The rough ER has ribosomes attached and is involved in protein synthesis, while the smooth ER is involved in lipid synthesis and detoxification. What is the main role of the endoplasmic reticulum in maintaining cellular homeostasis?
It digests food particles.
It stores genetic information.
It helps produce and transport molecules needed for cell function.
It creates energy from sunlight.
Lysosomes are small organelles filled with enzymes that break down waste materials and cellular debris. They help keep the cell clean by digesting unwanted substances. How do lysosomes contribute to the maintenance of homeostasis in the cell?
By producing energy for the cell.
By storing genetic material.
By breaking down and recycling cellular waste and damaged organelles.
By creating proteins.
Imagine a cell that has damaged mitochondria and cannot produce enough ATP. Predict how this would affect the cell’s ability to maintain homeostasis and explain your reasoning?
The cell would be able to function normally because ATP is not important.
The cell would produce more glucose to compensate.
The cell would struggle to perform essential processes, leading to loss of homeostasis.
The cell would divide more rapidly.
Which of the following best describes the main function of mitochondria in maintaining cell homeostasis?
They store genetic information for the cell.
They produce energy by breaking down nutrients.
They synthesize proteins for cell growth.
They transport materials across the cell membrane.
What is the primary role of chloroplasts in plant cells?
Breaking down waste materials
Producing energy from sunlight
Storing water and minerals
Transporting proteins
How does the endoplasmic reticulum contribute to cell function?
By digesting cellular waste
By synthesizing and transporting proteins and lipids
By producing energy from glucose
By storing genetic material
What is the main function of the Golgi apparatus?
Producing ATP for the cell
Modifying and packaging proteins and lipids
Breaking down harmful substances
Storing water and nutrients
What is the primary function of lysosomes in a cell?
Synthesizing proteins
Breaking down and recycling waste
Producing energy
Transporting nutrients
Which statement best describes the role of the cell membrane in transport mechanisms?
It produces energy for the cell.
It controls the movement of substances in and out of the cell.
It stores genetic information.
It digests cellular waste.
Why is it important for chemical reactions in cells to be balanced?
To ensure energy is produced
To maintain the law of conservation of mass
To allow for faster reactions
To increase the number of products
What is a possible consequence of an unbalanced chemical reaction in a cell?
The cell will produce more energy
The cell may not function properly
The cell will store more nutrients
The cell will divide faster
Which of the following best explains why mitochondria are essential for animal cells?
They help in photosynthesis
They provide energy needed for cellular activities
They store waste products
They produce proteins
Why is chlorophyll important for the function of chloroplasts?
It helps break down waste
It absorbs sunlight for photosynthesis
It stores water
It produces ATP directly
What is the main function of ribosomes on the rough ER?
Breaking down glucose
Synthesizing proteins
Storing genetic material
Producing lipids
How does the smooth ER help maintain cell homeostasis?
By producing proteins
By synthesizing lipids and detoxifying chemicals
By storing waste
By producing energy
What would happen if lysosomes did not function properly?
The cell would produce more energy
Waste would accumulate, harming the cell
Proteins would be synthesized faster
The cell would divide more quickly
What is the significance of selective permeability in the cell membrane?
It allows all substances to enter the cell
It helps maintain a stable internal environment
It produces energy for the cell
It stores genetic material
If a cell's mitochondria are damaged, what is the most likely effect on the cell?
Increased protein synthesis
Reduced energy production
Enhanced waste removal
Faster cell division
If chloroplasts are not functioning properly, what would be the impact on the plant cell?
Increased waste production
Decreased energy and oxygen production
Faster protein synthesis
Enhanced cell division
If the ER is not functioning, which cellular process would be most affected?
Energy production
Protein and lipid synthesis
Waste removal
Cell division
If the Golgi apparatus is damaged, what is the most likely consequence for the cell?
Proteins will not be properly processed or delivered
Increased energy production
Enhanced waste removal
Faster cell division
If lysosomes are absent, what would happen to the cell over time?
The cell would produce more energy
Waste would build up, damaging the cell
Proteins would be synthesized faster
The cell would divide more quickly
Match each of these Transformations of State with its correct State Change.
G → S
Deposition
S → G
Sublimation
G → L
Condensation
L → G
Vaporization
S → L
Melting
Match the following.
Subatomic particle with +1 Charge.
Proton
Subatomic particle with -1 Charge.
Electron
Subatomic particle with 0 Charge.
Neutron
Center Region of Atom, Positively Charged.
Nucleus
Outer Region of Atom, Negatively Charged.
Electron Cloud
Understanding the Atom's Structure.
Accurately identify the property of each subatomic particle.
Negatively charged subatomic.
e-
Located in the Electron Cloud.
Smallest of the three subatomics.
Positively charged subatomic.
p+
Located in the Nucleus with n0.
Unique to each element.
Neutrally charged subatomic.
n0
Located in the Nucleus with p+.
Does not affect the charge of the Nucleus.
Blue subatomic particle
Green subatomic particle
Red subatomic particle
Identifying the States of Matter.
Accurately select characteristics of each State of Matter.
Defintion: Definite, Definite
Definition: Indefinite, Definite
Definition: Indefinite, Indefinite
Particles: Packed Close
Movement: Vibrates
Intermolecular Force: Strongest
Temperature: Coolest
Particles: Loosely Touching
Movement: Slide Past One Another
Intermolecular Forces: Medium
Particles: Farthest apart
Movement: Zippy Bumper Cars
Intermolecular Forces: Weakest
Temperature: Warm
Temperature: Hottest
Match each of these organelles with its specific function (job).
Mitchondria
Converts cell food into cell energy (ATP)
Nucleus
Controls all cell activity
Golgi Vesicles
"Fedex Trucks". Shipper of the substances in and out of cell
Lysosome
Removes waste and toxins from cell
Plasma Membrane
Regulates which substances may come in and out of cell
Match each of these organelles with its specific function (job).
Vacuole
Stores water, food and waste
Mitchondria
Converts cell food into cell energy (ATP)
Nucleolus
Location of MOST of cell DNA
Golgi Body
Packages and ships substances in and out of cell
Cell Wall
Provides rigid structure and maintains plant pressure
Cells with a nucleus and membrane-bound organelles are called _____.
Match each term with its correct definition.
Prokaryote
A single-celled organism that does not have a nucleus or membrane-bound organelles.
Eukaryote
Organism made of cells that have nucleus enclosed by membrane.
Cell
Basic building block of living things.
Organism
One individual living thing; anything that can carry out life processes independently.
Organelle
Tiny parts of a cell with a specific function.
Match each of these terms with its correct definition.
unicellular
organism made of one cell
multicellular
organism made of many cells
cell
basic building block of all living things
microscope
tool used for making really small things → BIG
hierarchy
order of organization
Eukaryotic cells can include _______ (Select all that apply).
protists
plants
animals
fungi
What is #3?
Plasma membrane
Ribosome
Centriole
Chloroplast
Mitochondria
What is #2?
Cell wall
Cell membrane
Mitochondria
Chloroplast
Match each of these terms with its correct definition.
ATP
Energy Molecule of the cell
Homeostasis
Maintenance of the internal environment
DNA
Blueprint of creation for the cell
Internal
Means "inside"
Chloroplast
Location of photosynthesis
What is #9?
Golgi bodies
smooth endoplasmic reticulum
rough endoplasmic reticulum
Nucleus
Nucleolus
Match each of these organelles with its specific function (job).
Vacuole
Stores water, food and waste
Mitchondria
Converts cell food into cell energy (ATP)
Nucleolus
Location of MOST of cell DNA
Golgi Body
Packages and ships substances in and out of cell
Cell Wall
Provides rigid structure and maintains plant pressure
What is #1?
Cell wall
Cell membrane
Mitochondria
Chloroplast
What is #3?
Central vacuole
Nucleus
Nucleolus
Cytoplasm
Place these Hierarchical Levels in order, from MOST members to LEAST members.
Kingdoms
Phylum
Family
Genus
Species
What is #11?
Golgi bodies
smooth endoplasmic reticulum
rough endoplasmic reticulum
Nucleus
Nucleolus
Match each term with its correct definition.
Thylakoids
Flat sacs inside chloroplast
Cristae
Zig-zag folds of the mitochondria
Photosynthesis
Process of converting sunlight to plant food
Cytoplasm
Jelly of cell; Maintains pressure and allows organelles to move
ATP
Cellular energy molecule
What is #4?
Central vacuole
Nucleus
Nucleolus
Cytoplasm
Which is NOT part of cell theory?
all organisms are made of one or more cells
cells are the basic units of life
cells form from other cells
all organisms are made of multiple cells
What is #5?
Cell wall
Cell membrane
Mitochondria
Chloroplast
What is #6?
Plasma membrane
Ribosomes
Centriole
Chloroplast
Mitochondria
Match each of these organelles with its specific function (job).
Mitchondria
Converts cell food into cell energy (ATP)
Nucleus
Controls all cell activity
Golgi Vesicles
"Fedex Trucks". Shipper of the substances in and out of cell
Lysosome
Removes waste and toxins from cell
Plasma Membrane
Regulates which substances may come in and out of cell
What is #10?
Cell wall
Cell membrane
Mitochondria
Chloroplast
What is #1?
Golgi bodies
smooth endoplasmic reticulum
rough endoplasmic reticulum
Nucleus
Nucleolus
Match the following.
Center Region of Atom, Positively Charged.
Nucleus
Outer Region of Atom, Negatively Charged.
Electron Cloud
The Number of Protons.
Atomic Number
The amount of Nucleons.
Mass Number
Occurs with different amounts of Neutrons.
Isotope
What is the minimal goal accuracy (WITH COMPLETION OF THE TASK) for all homework assignments?
80%
34%
85%
50%
What is the minimal goal accuracy (WITH COMPLETION OF THE TASK) for all homework assignments?
80%
34%
85%
50%
A rock with the mass of 60 g is broken into 2 pieces. What are possible masses for the two pieces of rock?
What is the minimal goal accuracy (WITH COMPLETION OF THE TASK) for all homework assignments?
80%
34%
85%
50%
Match each of these functions with its organelles.
Factory that prepares proteins for distribution throughout the cell.
Endoplasmic Reticulum
Located in the center of the nucleus; most concentrated area of DNA.
Nucleolus
Synthesizes proteins.
Ribosomes
Provides structure and supports cellular pressure.
Cell Wall
Flatten-sacs that are packaging agents; shipping proteins and lipids in and out of the cell.
Golgi Body
Which of statement best describes the function of the cell membrane?
It allows things to freely enter and exit the cell.
It controls which substances enter and exit the cell.
It prevents substances from entering the cell.
It prevents substances from leaving the cell.
Match each of these functions with its organelle.
Brain of the cell; controls all cellular functions.
Nucleus
Site of photosynthesis; process that converts carbon dioxide and water to glucose.
Chloroplasts
Detoxifiers of the cell; trashman.
Lysosomes
Jelly of the cell; maintains organelle motility and cellular shape.
Cytoplasm
Powerhouse of the cell; converts cellular food into cellular energy (ATP).
Mitochondria
Balanced or NOT:
Balanced
NOT
Balanced or Not: Mg + O2 → MgO
Balanced Equation
NOT Balanced Equation
a
b
c
d
a
b
c
d
a
b
c
d
a
b
c
The largest division used to classify living things
Class
Domain
Genus
Species
What is the order of the taxonomic levels from least specific to most specific?
Kingdom, Family, Species, Order, Class, Phylum, Genus
Kingdom, Phylum, Class, Order, Family, Genus, Species
Species, Order, Kingdom, Family, Genus, Phylum, Class
Species, Genus, Family, Order, Class, Phylum, Kingdom
What is the order of the taxonomic levels from least specific to most specific?
Kingdom, Family, Species, Order, Class, Phylum, Genus
Kingdom, Phylum, Class, Order, Family, Genus, Species
Species, Order, Kingdom, Family, Genus, Phylum, Class
Species, Genus, Family, Order, Class, Phylum, Kingdom
Match each of these terms with its definition.
Domain
Highest Taxonomic Ranking; Most Biodiversity
Kingdom
Taxonomic Ranking that comprises Domain
Genus
Taxonomic Ranking above Species; First part of Binomial Nomenclature
Species
Smallest Taxonomic Ranking; Least Biodiversity
Scientific Name
Two-Part Name; Provides each organism with unique name
Match each protist with its image.
Euglena
Ameba
Paramecium
Match the description with the protist.
Euglena
Plant-like Protist with flagella
Ameba
Protozoan with pseudopods.
Paramecium
Protozoan with cilia.
Match each image with its accurate kingdom.
Fungi
Plantae
Animalia
Protista
Archaebacteria
Wild cats (Felis silvestris) are most closely related to which of the following?
lion (Panthera leo)
bearcat (Arctictis binturong)
cheetah (Acinonyx jubatus)
lynx (Felis lynx)
Which of the following sets of protists would be the most closely related?
Protists in the same species
Protists in the same genus
Protists in the same family
Protists in the same class
What are the six kingdoms of life?
Animals, Plants, Vertebrates, Invertebrates, Viruses, Fungi
Bacteria, Amoeba, Algae, Archaea, Protists, Nuclei
Archaea, Bacteria, Protists, Animals, Plants, Fungi
Archaea, Bacteria, Animals, Plants, Proteins, Fungi
Which of the following is not true about the Kingdom Animalia?
they are multicellular
they reproduce with a partner
they use photosynthesis to produce food
they can move from place to place
Which of these traits are not used to classify organisms?
Cell type (prokaryotic or eukaryotic)
How they create/obtain energy
The number of cells they have
How long they live
Some students used information they gathered from lab investigation to prepare a table. They entered the table in their lab notebook. Which statement identifies Cell 1 and Cell 2 based on the results?
Cell 1 is eukaryotic, and Cell 2 is Prokaryotic
Cell 1 is prokaryotic, and Cell 2 is Eukaryotic
Both Cell 1 and Cell 2 are Eukaryotic
Both Cell 1 and Cell 2 are Prokaryotic
This is a group of unicellular organisms. They do have a flagellum, a nucleus, and other membrane-bound organelles, including chloroplasts. How would this unicellular organism be classified?
Plantae
Fungus
Protist
Eubacteria
This is a microscopic image. Each snake-like shape is a chain of spherical shaped, single-celled organisms. These cells do not have a nucleus or membrane-bound organelles. How would this unicellular organism be classified?
Protist
Eubacterium
Yeast
Dinoflagellate
This is a microscopic image of an organism that is a heterotrophic decomposer. It is a eukaryote. Its cells have a cell wall made of chitin. How would this organism be classified?
Animalia
Protist
Fungi
Plantae
Which group of organisms contain peptidoglycan in their cell walls?
Archaebacteria
Eubacteria
Fungi
Protists
Match each of these organelles with its relatable role.
Ribosomes
Small Protein Factory
Cytoplasm
Jelly
SER
Factory for Lipids
Cell/ Plasma Membrane
Doorman
Golgi Body
Fedex Shipper
Which organelles are not present in an animal cell:
A. Cell membrane
B. Chloroplast
C. Cell wall
D. Mitochondria
A and B
B and C
A and D
B and D
Eukaryotic cells can include _______ (Select all that apply).
protists
plants
animals
fungi
Match each of these terms with its correct definition.
unicellular
organism made of one cell
multicellular
organism made of many cells
cell
basic building block of all living things
microscope
tool used for making really small things → BIG
hierarchy
order of organization
Match each term with its correct definition.
Prokaryote
A single-celled organism that does not have a nucleus or membrane-bound organelles.
Eukaryote
Organism made of cells that have nucleus enclosed by membrane.
Cell
Basic building block of living things.
Organism
One individual living thing; anything that can carry out life processes independently.
Organelle
Tiny parts of a cell with a specific function.
Cells with a nucleus and membrane-bound organelles are called _____.
Match each of these organelles with its specific function (job).
Vacuole
Stores water, food and waste
Mitchondria
Converts cell food into cell energy (ATP)
Nucleolus
Location of MOST of cell DNA
Golgi Body
Packages and ships substances in and out of cell
Cell Wall
Provides rigid structure and maintains plant pressure
Which of these groups has members that all may be photosynthetic?
Animals only .
Plants only.
Only plants and animals.
Plants, algae, bacteria, and some protists.
Which of these statements is TRUE (Select all that apply)?
All multicellular organisms have specialized cells.
Kingdoms are the highest taxa of classification.
Bacteria are eukaryote-celled organisms.
Taxonomy is the science of describing, classifying, and naming organisms.
Only organisms in kingdom Plantae are autotrophic.
