Bio100 Exam 1 Questions And Answers.
Graded A+
How is discovery-based science different from hypothesis-driven science? -
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(Correct Answer) Discovery Based science- has the goal of finding new information
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and serves to form new hypotheses. Hypothesis Driven science- uses deduction
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and the scientific method.
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What are the steps of the Scientific Method? - (Correct Answer) 1. Do an
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observation
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2. Ask a question
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3. Construct a hypothesis
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4. Make a prediction
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5. Test the experiment
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6. Analyze the results
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7. Draw a conclusion
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Remember: A hypothesis is an educated guess to your question, must be testable, j j j j j j j j j j j j
and can never be proven!
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Are large or small sample sizes more accurate for scientific studies? - (Correct
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Answer) Large sample sizes are more accurate for scientific studies because it
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increase the chance of finding a significant difference and leads to a more precise
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data.
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What is the difference between a hypothesis and a scientific theory? - (Correct
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Answer) A hypothesis is an explanation that may or may not have undergone
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scientific testing, while a theory is a hypothesis that has undergone numerous tests
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over many years and has accumulated a large body of evidence in support of the
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explanation.
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What are the six qualities of life? Be able to describe each quality and not just
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recognize them. - (Correct Answer) 1. All living things have cells - Cell is the
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smallest unit of life. Cell contains all the material that are necessary for life to exist.
j j j j j j j j j j j j j j j j
,j Some organisms are unicellular (only one cell) like bacteria, multicellular (many
j j j j j j j j j j
j cells) like human. Human cells have different function like for nerves or skin.
j j j j j j j j j j j j j
2. Living things can sense and response to change - Living things response to a
j j j j j j j j j j j j j j
stimuli. A stimuli could include smells (good or bad), taste, sound, heat (touching a
j j j j j j j j j j j j j j
hot stove), light or darkness, or gravity.
j j j j j j j j
- Homeostasis: When an organism responds to changes in order to keep its internal
j j j j j j j j j j j j j
environment the same.
j j j j
3. Living things reproduce - Living things must reproduce to ensure that their
j j j j j j j j j j j j
species survives.
j j j
4. Living things have DNA - Living things have DNA because it controls all the
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characteristics and activities of an organism.
j j j j j j j
5. Living things use energy - Organisms takes in energy, converts it to useful forms,
j j j j j j j j j j j j j j
and expels energy.
j j j
6. Living things grow and develop - Development: Living things change and mature
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as they grow old over time. Organisms pass through different stages as they grow.
j j j j j j j j j j j j j j j
- Single celled organisms: Grow larger.
j j j j j
- Multi-celled organisms: Grow in number of cells.
j j j j j j j
- Metamorphosis: Is when organisms have a complete change of body shape. Ex:
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Capterpillar -> Butterfly or Tadpole -> Frog.
j j j j j j j
What is an emergent property? What quality of life does it have to do with? - (Correct
j j j j j j j j j j j j j j j j
Answer) -It's the property where living things become more and more complex as it
j j j j j j j j j j j j j j
goes from cellular level to organ system (Some kind of characteristics comes
j j j j j j j j j j j j
around when two interest come together).
j j j j j j j
-Life requires the ability to grow and reproduce using the information in one's DNA.
j j j j j j j j j j j j j
, Why is the ability to evolve important for living things? - (Correct Answer) Living
j j j j j j j j j j j j j
things evolve to adapt to their surroundings.
j j j j j j j
How does taxonomy help scientists study life? - (Correct Answer) By providing
j j j j j j j j j j j
easily remembered scientific names for organisms. The more features 2 organisms
j j j j j j j j j j j
share, the more taxonomic levels they share. Ranks group to similar organisms.
j j j j j j j j j j j j
Be able to list, in order, the taxonomic hierarchy. Which taxonomic category is the
j j j j j j j j j j j j j
most specific and which is the most general? - (Correct Answer)
j j j j j j j j j j j
Domain>Kingdom>Phylum>Class>Order>Family>Genus>Species
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-Domains are most general and species are specific. j j j j j j j
What are the three domains that include all living things? - (Correct Answer) -
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Bacteria: Unicellular, found everywhere, some cause disease in humans, but most
j j j j j j j j j j
are beneficial.
j j j
-Archaea: Unicellular, often live in extreme conditions, such as environments that
j j j j j j j j j j
are very hot, salty, or acidic.
j j j j j j
-Eukarya: Unicellular or multicellular, larger (10-100x), more sophisticated cells.
j j j j j j j j
Generally, what does an evolutionary tree tell you about the organisms on it? -
j j j j j j j j j j j j j
(Correct Answer) How organisms are related.
j j j j j j
What is the smallest piece of an element that still retains the qualities of the
j j j j j j j j j j j j j j
element? - (Correct Answer) Atom
j j j j j
What are the components of an atom? What are the characteristics of each of these
j j j j j j j j j j j j j j
components (big vs. little?, charged?, location?) - (Correct Answer) Each Atom is
j j j j j j j j j j j j
made of even smaller sub-atomic particles called Protons, Neutrons, and
j j j j j j j j j j
Electrons.
j
Protons = positive charge j j j j
Electrons = negative charge j j j
Neutrons = no charge j j j
Graded A+
How is discovery-based science different from hypothesis-driven science? -
j j j j j j j j
(Correct Answer) Discovery Based science- has the goal of finding new information
j j j j j j j j j j j j
and serves to form new hypotheses. Hypothesis Driven science- uses deduction
j j j j j j j j j j j
and the scientific method.
j j j j
What are the steps of the Scientific Method? - (Correct Answer) 1. Do an
j j j j j j j j j j j j j
observation
j
2. Ask a question
j j j
3. Construct a hypothesis
j j j
4. Make a prediction
j j j
5. Test the experiment
j j j
6. Analyze the results
j j j
7. Draw a conclusion
j j j
Remember: A hypothesis is an educated guess to your question, must be testable, j j j j j j j j j j j j
and can never be proven!
j j j j j
Are large or small sample sizes more accurate for scientific studies? - (Correct
j j j j j j j j j j j j
Answer) Large sample sizes are more accurate for scientific studies because it
j j j j j j j j j j j j
increase the chance of finding a significant difference and leads to a more precise
j j j j j j j j j j j j j j
data.
j
What is the difference between a hypothesis and a scientific theory? - (Correct
j j j j j j j j j j j j
Answer) A hypothesis is an explanation that may or may not have undergone
j j j j j j j j j j j j j
scientific testing, while a theory is a hypothesis that has undergone numerous tests
j j j j j j j j j j j j j
over many years and has accumulated a large body of evidence in support of the
j j j j j j j j j j j j j j j
explanation.
j
What are the six qualities of life? Be able to describe each quality and not just
j j j j j j j j j j j j j j j
recognize them. - (Correct Answer) 1. All living things have cells - Cell is the
j j j j j j j j j j j j j j j
smallest unit of life. Cell contains all the material that are necessary for life to exist.
j j j j j j j j j j j j j j j j
,j Some organisms are unicellular (only one cell) like bacteria, multicellular (many
j j j j j j j j j j
j cells) like human. Human cells have different function like for nerves or skin.
j j j j j j j j j j j j j
2. Living things can sense and response to change - Living things response to a
j j j j j j j j j j j j j j
stimuli. A stimuli could include smells (good or bad), taste, sound, heat (touching a
j j j j j j j j j j j j j j
hot stove), light or darkness, or gravity.
j j j j j j j j
- Homeostasis: When an organism responds to changes in order to keep its internal
j j j j j j j j j j j j j
environment the same.
j j j j
3. Living things reproduce - Living things must reproduce to ensure that their
j j j j j j j j j j j j
species survives.
j j j
4. Living things have DNA - Living things have DNA because it controls all the
j j j j j j j j j j j j j j
characteristics and activities of an organism.
j j j j j j j
5. Living things use energy - Organisms takes in energy, converts it to useful forms,
j j j j j j j j j j j j j j
and expels energy.
j j j
6. Living things grow and develop - Development: Living things change and mature
j j j j j j j j j j j j
as they grow old over time. Organisms pass through different stages as they grow.
j j j j j j j j j j j j j j j
- Single celled organisms: Grow larger.
j j j j j
- Multi-celled organisms: Grow in number of cells.
j j j j j j j
- Metamorphosis: Is when organisms have a complete change of body shape. Ex:
j j j j j j j j j j j j
Capterpillar -> Butterfly or Tadpole -> Frog.
j j j j j j j
What is an emergent property? What quality of life does it have to do with? - (Correct
j j j j j j j j j j j j j j j j
Answer) -It's the property where living things become more and more complex as it
j j j j j j j j j j j j j j
goes from cellular level to organ system (Some kind of characteristics comes
j j j j j j j j j j j j
around when two interest come together).
j j j j j j j
-Life requires the ability to grow and reproduce using the information in one's DNA.
j j j j j j j j j j j j j
, Why is the ability to evolve important for living things? - (Correct Answer) Living
j j j j j j j j j j j j j
things evolve to adapt to their surroundings.
j j j j j j j
How does taxonomy help scientists study life? - (Correct Answer) By providing
j j j j j j j j j j j
easily remembered scientific names for organisms. The more features 2 organisms
j j j j j j j j j j j
share, the more taxonomic levels they share. Ranks group to similar organisms.
j j j j j j j j j j j j
Be able to list, in order, the taxonomic hierarchy. Which taxonomic category is the
j j j j j j j j j j j j j
most specific and which is the most general? - (Correct Answer)
j j j j j j j j j j j
Domain>Kingdom>Phylum>Class>Order>Family>Genus>Species
j
-Domains are most general and species are specific. j j j j j j j
What are the three domains that include all living things? - (Correct Answer) -
j j j j j j j j j j j j j
Bacteria: Unicellular, found everywhere, some cause disease in humans, but most
j j j j j j j j j j
are beneficial.
j j j
-Archaea: Unicellular, often live in extreme conditions, such as environments that
j j j j j j j j j j
are very hot, salty, or acidic.
j j j j j j
-Eukarya: Unicellular or multicellular, larger (10-100x), more sophisticated cells.
j j j j j j j j
Generally, what does an evolutionary tree tell you about the organisms on it? -
j j j j j j j j j j j j j
(Correct Answer) How organisms are related.
j j j j j j
What is the smallest piece of an element that still retains the qualities of the
j j j j j j j j j j j j j j
element? - (Correct Answer) Atom
j j j j j
What are the components of an atom? What are the characteristics of each of these
j j j j j j j j j j j j j j
components (big vs. little?, charged?, location?) - (Correct Answer) Each Atom is
j j j j j j j j j j j j
made of even smaller sub-atomic particles called Protons, Neutrons, and
j j j j j j j j j j
Electrons.
j
Protons = positive charge j j j j
Electrons = negative charge j j j
Neutrons = no charge j j j
