WorksheetsPrinciples of Biology 1
Total questions: 58
Worksheet time: 29mins
Which of the following is NOT a characteristic that all living organisms share?
Respond to their environment.
Grow and develop.
Consist of cells.
Attract to sugar crystals.
What is an example of a living thing responding to the environment?
A rock not moving when stepped on.
A turtle moving when it thinks it's being stepped on.
A frog staying still when approached.
Bacteria not changing in cell size.
What happens if a plant seed is placed in the right conditions?
It remains a lifeless pebble.
It grows and develops into a plant.
It attracts to sugar crystals.
It does not change at all.
Why can't a tadpole grow and develop into a frog if iodine is absent in water?
Because it will not respond to its environment.
Because it will not be able to maintain homeostasis.
Because it will not be able to produce offspring.
Because it needs iodine for growth and development.
What is reproduction in living things?
The process by which living things consume food
The process by which living things give rise to offspring
The process by which living things grow
The process by which living things move from one place to another
Which of the following is an example of asexual reproduction?
A frog laying eggs
A human giving birth
Bacteria dividing to form two daughter cells
A tree growing from a seed
What is homeostasis?
The ability to reproduce
The ability to move
The maintenance of a stable internal environment
The process of consuming food
What is metabolism?
The process of maintaining a stable body temperature
The total of all the biochemical reactions occurring in a cell or organism
The process of a cell dividing into two daughter cells
The ability of an organism to change its skin color
Why do living things need a continuous input of energy?
To maintain homeostasis
To sustain life processes
To reproduce
To move from one place to another
What is the basic unit of the structure and function of living things?
Organ
Tissue
Cell
Atom
How are frog cells and bacteria cells similar according to the text?
They both have a nucleus.
They both can be seen without a microscope.
They both are made of multiple cells.
They both are very similar despite the organisms looking different on the outside.
What is a virus according to the text?
A single-celled organism
A type of bacteria
DNA or RNA surrounded by a coat of protein
A living organism that can reproduce on its own
Which of the following is NOT one of the four unifying principles of biology mentioned in the text?
Cell theory
Gene theory
Homeostasis
Photosynthesis
According to the cell theory, how do all organisms begin life?
As multiple cells
From preexisting cells
As non-living things
From spontaneous generation
What is the approximate number of cells that make up the human body?
100 million
100 billion
100 trillion
100 thousand
What is the main idea of the gene theory?
Genes are found on chromosomes and control the characteristics of organisms.
Genes are single-celled organisms that affect living things.
Genes are a type of cell that helps in respiration.
Genes are found in the atmosphere and affect the oxygen levels.
What percentage of the Earth's atmosphere is made up of oxygen?
21%
10%
50%
78%
What role do living things play in maintaining the concentration of oxygen in Earth's atmosphere?
They consume oxygen and decrease its concentration.
They produce oxygen and increase its concentration.
They have no effect on the concentration of oxygen.
They convert oxygen into other gases.
What is the oxygen cycle?
A process where oxygen is only produced but not used
A biogeochemical cycle that helps in maintaining almost constant levels of oxygen in the atmosphere
A cycle where oxygen is used by animals and not replenished by plants
A cycle that occurs only in the ocean
What is evolution?
A process where living things remain unchanged over time
A change in the characteristics of non-living things over time
A change in the characteristics of living things over time
A process where living things produce fewer offspring over time
What is natural selection?
A process where all living things have an equal chance to pass on their genes
A process where some living things produce more offspring than others, so they pass more genes to the next generation
A process where living things do not adapt to their environment
A process where living things change their environment to suit their needs
Why is the mole's touch organ an adaptation?
It helps the mole to see in the dark
It helps the mole to hear better underground
It helps the mole to survive in its dark, underground environment
It helps the mole to fly
Why are the mole's very large front claws considered an adaptation for its life in the soil?
They help the mole to swim
They are not an adaptation; they are purely decorative
They help the mole to sense food by touch in the dark
They are not mentioned as an adaptation in the text
What does the cell theory state about living things?
All living things are made up of cells, and living cells always come from other non-living matter.
All living things are made up of cells, and living cells always come from other living cells.
All living things are made up of a single cell that can replicate indefinitely.
All living things are not made up of cells, but they contain genetic material.
What is homeostasis?
The process by which species evolve over time.
The interaction between different species for survival.
Maintaining a constant internal environment.
The theory that characteristics of living things are controlled by the environment.
What is evolution in the context of living organisms?
The process by which living organisms maintain a constant internal environment.
The change in species over time.
The theory that all living things are made up of cells.
The relationship between organisms of different species.
What is symbiosis?
A relationship where one organism benefits and the other is unaffected.
A relationship where both organisms are harmed.
A close relationship between organisms of different species where at least one benefits.
A relationship where one organism benefits and the other is harmed.
According to the text, what is a myth regarding human evolution?
Humans and chimpanzees share 99% of their DNA.
Humans evolved directly from chimpanzees.
Humans, chimpanzees, and gorillas evolved from a common ancestor.
Humans and chimpanzees do not share any common DNA.
What is interdependence in the context of living things?
The theory that living things are controlled by their genes.
The process by which living things evolve over time.
The dependency of living things on their environment and other organisms for survival.
The maintenance of a constant internal environment by living things.
What is competition in the context of living organisms?
A relationship where one organism benefits and the other is harmed.
A process where organisms work together to share resources.
A relationship between living things that depend on the same resources and try to obtain them at the same place and time.
A situation where organisms avoid each other to prevent conflict over resources.
What can make an organism more likely to win in a competition for resources?
Being slower than other organisms.
Having adaptations that make it more fit to live in its environment.
Avoiding the resources that are in competition.
Sharing resources with other organisms.
What are antibiotics that are used to treat bacterial infections actually doing in the natural environment?
They are harming the bacteria without any competition.
They are helping bacteria to grow faster.
They are competing with bacteria for nutrients.
They are making bacteria immune to chemicals.
What is symbiosis in the context of living organisms?
A) A competition between living things for resources
B) A close relationship between organisms of different species where at least one benefits
C) The organization of cells into tissues and organs
D) A group of organs that work together to perform a certain function
What does competition refer to among living things?
A) A close relationship between organisms of different species
B) The organization of cells into tissues and organs
C) A relationship between living things that depend on the same resources
D) A group of organs that work together to perform a certain function
What is the basic unit of structure and function in all living things?
A) Tissue
B) Organ
C) Cell
D) Organ system
Which of the following is NOT one of the four major tissue types in the human body?
A) Epithelial tissue
B) Muscular tissue
C) Connective tissue
D) Cartilage tissue
What is a population in biological terms?
A) A single organism
B) A group of cells
C) Organisms of different species living in the same area
D) Organisms of the same species that live in the same area
What does an ecosystem consist of?
Only the living things in a given area
Only the nonliving environment
Both the living things and the nonliving environment in a given area
Only populations of fish and coral
What is a biome?
A single species of organism
A group of similar ecosystems with the same general type of physical environment
The nonliving environment in an ecosystem
The diversity of living things
What is the biosphere?
The part of Earth where only animals exist
The part of Earth where only plants exist
The part of Earth where all life exists, including land, water, and air
The part of Earth that consists of only water and air
What is biodiversity?
The number of different species of animals that live on Earth
The number of different species of organisms that live on Earth
The number of different biomes on Earth
The number of different ecosystems on Earth
How many kingdoms are commonly used to group the different species on Earth?
Four
Five
Six
Seven
What is evolution often described as?
A change in the nonliving environment over time
A change in biomes over time
A change in species over time
A change in the number of ecosystems over time
Approximately how many years ago did life begin on Earth?
1 to 2 billion years ago
3.5 to 4 billion years ago
5 to 6 billion years ago
2.5 to 3 billion years ago
What is the theory of evolution by natural selection as proposed by Charles Darwin?
A process where the strongest animals survive and the weakest perish
A theory that states organisms do not change over time
A process where some members of a species are better adapted to their environment than others
A theory that all species on Earth appeared at the same time
What is an adaptation in the context of evolution?
A change in the environment that forces organisms to leave
A trait that helps an organism survive and reproduce in a given environment
A random mutation that does not affect the organism's chances of survival
The process by which new species are created
Who is associated with the publication of "On the Origin of Species"?
Aristotle
Isaac Newton
Charles Darwin
Albert Einstein
What does the timeline of life on Earth illustrate?
The process of natural selection
The history of human civilization
The evolution of multicellular organisms and the increase in Earth's biodiversity
The geological changes of Earth's surface
What advantage did giraffes with long necks have in their environment according to the text?
They could run faster.
They could feed off the higher branches.
They had better camouflage.
They could swim better.
Why was Darwin's theory of evolution not well-received at first?
People were not interested in evolution.
Darwin's book was difficult to understand.
Many found it hard to accept that humans had evolved from an ape-like ancestor.
Darwin's evidence was considered insufficient.
What did scientists learn about by the 1930s that helped support the theory of evolution?
The discovery of electricity.
The invention of the microscope.
The structure of DNA.
Genes and how they work.
Who developed essentially the same theory of evolution as Darwin?
Isaac Newton.
Alfred Russel Wallace.
Thomas Edison.
Gregor Mendel.
According to modern technology, how can scientists compare the genes of living species?
By observing their physical characteristics
By comparing the number of chromosomes
By directly comparing the genes of the species
By studying their fossil records
What percentage of their genes do humans and chimpanzees share?
About 78%
About 88%
About 98%
About 108%
What does the theory of evolution explain?
How life on Earth first began
Only how life changed after it first appeared
That humans evolved from modern apes
The process of natural disasters over time
How long ago did life begin on Earth according to the summary?
1 to 2 billion years ago
2 to 3 billion years ago
3 to 4 billion years ago
4 to 5 billion years ago
What is the main mechanism by which evolution occurs?
Genetic mutation
Natural selection
Artificial selection
Environmental changes
How are characteristics of organisms passed from one generation to the next?
Through their learned behaviors
Through their physical strength
Through their genes
Through environmental adaptation
