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10/7/2024 11:03AM
Biology Savvas Semester Exam Questions
With 100% Correct Answers
Modern scientists continue the tradition of the Greek philosopher in their efforts to understand
the world around them. They know that the universe consists of objects, organisms, and
processes that interact in many different ways, and proper scientific methods can help this
understanding. Which two statements state the goals of science? - answer✔A goal of science is
to generate testable explanations for events in the natural world.
A goal of science is to make useful predictions about natural events , and to understand patterns
in nature by using explanations supported by data
Scientific methodology is a well-established method used to study biological systems and
conduct experiments leading to valid results. In the methods of science, which step generally
comes before the other three steps? - answer✔developing a hypothesis
Kari is testing the hypothesis that plants rely on photosynthesis to grow, She conducts an
experiment in which she observes the sprouting and growth of bean seeds. The beans are raised
either in sunlight or darkness. She records her observations in a data table. Which statements
from Kari's records convey qualitative data, and not quantitative data? Choose all that apply. -
answer✔The beans in the control group have a white spot on day 2
The beans in the control group feel soft on day 2
The beans of both groups appear equally green and healthy on day 1.
The famous scientist Albert Einstein sometimes used "thought experiments" such as imagining
himself chasing a beam of light or riding an elevator in free fall. These thought experiments,
which would not be possible to conduct physically, helped him challenge current scientific
thinking and develop his theories of gravity and of special relativity. Write the words or phrases
from the box on the lines to complete the paragraph. - answer✔In actual physical experiments,
scientists must select equipment (E) carefully and avoid errors (A) in data collection and
analysis. There is variation in nature, so the larger the sample size (D) , the more accurately
researchers can determine dissimilarities within each group, and analyze variances between
experimental groups and controls. When interpreting data, researchers use statistical analysis (F)
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to decide if an experimental treatment is significantly different from the control group. When
drawing conclusions, the hypothesis (B) being tested may either be supported, or refuted and
revised (C) to be tested again.
When, if ever, can a scientific theory becomes a scientific law? - answer✔never, under no
circumstances
A scientist is designing an experiment on tomato plants. Which is the best example of hypothesis
that the experiment could test? - answer✔Increasing the amount of sunlight that a tomato plant
receives will increase its height.
Francesca, a PhD candidate, conducts extensive research on aluminum corrosion. When finished,
she will submit her research data and conclusions in a report to a scientific journal for peer
review. What are three benefits of peer review? Select three answer choices. - answer✔Peer
review allows other scientists the chance to try and replicate the experimental results
Peer review can lead to new ideas and further study.
Peer review helps check for mistakes, bias, or fraud in a set of experimental work.
Society expects scientists to follow ethical practices and meet many ethical standards. Which is
an example of one of those ethical standards? - answer✔Analyze data that was truly observed,
and not data that was expected or desired.
Scientists are often faced with ethical questions, or questions of right and wrong. Which of the
following situations involve the need for an ethical decision or resolution?
I. Mairead wants to include a hypothesis in her report, and she asks if she must give credit to the
scientist who first proposed it.
II. Aiden is planning and experiment on gerbils, and he asks how large the cages should be.
III. Paula is developing a new technique for mining fossil fuels, and she asks if the technique
must avoid polluting the experiment. - answer✔I.,II.,and III.
which task would be best accomplished in a field of engineering? - answer✔designing and
building an artificial heart for the human circulatory system
Fill in the paragraph - answer✔Living things are similar in many ways. Genes made of DNA (A)
carry the directions for inheritance, and offspring usually resemble their parents. With asexual
reproduction (G) , offspring have the same traits as their parents. With sexual reproduction (F) ,
offspring differ from their parents in some ways, Living organisms use energy and materials to
grow ,develop, and reproduce. These life processes involve a set of chemical reactions called
metabolism (B) . Organisms have means of detecting a change in their environment and
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responding to this stimulus (D) . Most organisms require that their internal environments remain
in a fairly constant range, and so they maintain homeostasis (E) . The ability of a group of
organisms to change, or evolve (C) over time helps populations survive in an ever-changing
environment.
No single characteristic alone can't describe a living thing, but all living things share certain
characteristics. Which is NOT one of these characteristics? - answer✔ability to move from place
to place
DeShawn is studying homeostasis and circulation. To organize his findings, he constructs two
models: one to represent a non-smoker, and one that includes attributes typically found in a
smoker. By comparing the two models, which relationship of cause and effect can DeShawn
BEST explain? - answer✔Smoking damages the function of the circulatory systems
Look at the pictures. Which crosscutting concept of biology do these phenomena BEST
represent? - answer✔Patterns
Scientists use the metric system when gathering data and performing experiments, Which of the
following statements about the metric system are true? Select three correct answers. -
answer✔The units of the metric system are scaled on multiples of 10, making mathematical
calculations easier to perform.
The Units of the metric system include kilograms for mass, meters for length, liters for volume,
and degrees Celsius for temperature.
Scientists often retest others' experiments, so a common system of measurement is essential.
Fill in the paragraph - answer✔There are many fields of biology, and in some branches,
biologists are concerned with tiny molecules (D) , while others study whole planets (C).
Biologists who study how the activities of all living organisms affect both the atmosphere ad
climate are working in the field of global ecology (E). Researchers who seek to replace damaged
genes that cause inherited diseases or to genetically engineer bacteria are studying biotechnology
(F). Some biologists work to combine the latest genetic information with computer technology to
organize all living things into a single universal " Tree of All Life" (B). Scientists concerned
with HIV, bird flu, and drug-resistant bacteria, and other pathogens are researching the ecology
and evolution (A) of infectious diseases. Scientists who look at the entire sets of DNA code
contained in a wide range of organisms are studying genomics (G).
How are electric charges distributed within the atoms? - answer✔Positive charges are
concentrated in the nucleus; negative charges surround the nucleus.
