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Biology sager butler Test |80+ Verified Q&A’S | Latest Update
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Biology sager butler Test |80+ Verified Q&A’S | Latest Update
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Biology sager butler Test |80+ Verified Q&A’S| Latest Update
Animalia-humans and all other animals. Protista-Plants (fruits, algae etc.) and Fungi- molds,
mushrooms etc.
What is the difference between a virus and a bacterium? - ✔✔Bacterium are single cells that
can survive on their own, inside or outside the body. Viruses are not cells, and they cause
infections by entering and multiplying inside the host's healthy cells.
What is meant by the scientific method? What are the limitations? - ✔✔The scientific
method is the process of objectively establishing facts through tests and experiments.
Limitations include constrained by the extent of existing knowledge. A hypothesis must be
testable and the experiments and observations be repeatable.
What is the first step in any experiment? - ✔✔Define a question or hypothesis to investigate.
Hypothesis - ✔✔an idea that is proposed for the sake of argument so that it can be tested to
see if it is true. Ex- "I think the antibiotic will be 100% larger than the control"
Dependent variable - ✔✔Value DEPENDS on that of another (count, measure, observe) on
the y axis.
Independent variable - ✔✔Variable who's variation does not depend on that of another.
What the experiment is about. (x)
Standardized variable - ✔✔Variables that stay the same throughout the experiment.
Sample size - ✔✔The number of units (persons, animals, patients, etc.) in a population to be
studies.
, Experimental group - ✔✔a test sample or group that receives an experimental procedure Ex
(a human experimental group can receive a new medicine)
Control Group - ✔✔A group in the experiment which a variable is not being tested. Ex (Study
to determine the effectiveness of a new drug)
Why is the wording of a hypothesis so important? What does it mean to accept or reject a
hypothesis? Does rejecting a hypothesis mean it was a "bad" experiment? - ✔✔It is what
forms the basis of entire research experiments. To accept a hypothesis it implies the null
hypothesis is by nature true and it is proved. Does not mean it was a bad experiment.
What is the mean and how is it calculated? - ✔✔Average of a set of data that is found by
adding up all the items collected and dividing that sum by the total number of items
How does an experiment's design help to distinguish between fact and opinion? - ✔✔A fact
is a statement that can be verified. It can be proven true of false through an experiment. An
opinion expresses feelings, attitude, judgement etc. And can neither be true or false.
How do you determine the total magnification of a microscope? - ✔✔Multiply the power of
the ocular lens by the power of the objective lens. For example if the ocular lens is 5x and the
objective lens is 12x the total magnification would be t x 12 or 60x
Antigen - ✔✔a toxin or other foreign substance that induces an immune response in the
body, especially the production of antibodies. You have them on your cells too.
Antibodies - ✔✔Formed by the body in response to a foreign antigen. Produce long term
protection.
Antibiotics - ✔✔Come from an outside source. Used to fight bacterial infections.
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