AnswersFL-2000310-Biology 1 Sem 1 - FlexAssessing Claims and Evidence

Development of Scientific Knowledge Answers

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Which hypothesis is testable?

A
Plants that are grown by using brand A fertilizer taste best.
B
Plants that have flowers look prettier than plants that do not have flowers.
C
Plants will eventually die off if global warming trends continue.
D
Plants make more sugar on sunny days than on cloudy days.
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A student conducted an experiment with two rose plants to determine if a liquid formula for fertilizer produced greater growth than a dry formula. After testing each fertilizer on two different plants for one month, his data led to the conclusion that the liquid formula was a better promoter of plant growth. When he described his conclusion to his teacher, she told him he needed to conduct additional trials. The teacher most likely asked for additional trials because

A
she did not believe the new formula helped plants grow better than the old formula.
B
it was necessary to see data from more plants before the conclusion could be accepted.
C
it was necessary to have tested the fertilizer on different kinds of plants.
D
she thought he should test additional fertilizer formulas on the same two plants.
3

Which is an example of science playing a role in developing technology?

A
the use of an electric spark to produce amino acids from gases that are present in Earth’s early atmosphere
B
the discovery that Penicillium mold produces a substance that prevents bacterial growth
C
the improvement in lens-grinding technology, which led to the discovery of cells in cork
D
the discovery that microwaves can pop corn, which led to the creation of microwave ovens
4

Gregor Mendel is referred to as the father of which classical science?

A
genetics
B
bioethics
C
botany
D
horticulture
5

A scientist who conducted an experiment obtained an unexpected result. What will she most likely do with the unexpected result?

A
leave it out of her analysis and final report
B
stop the experiment and begin again
C
change the procedures and try again
D
develop a new question to be investigated
6

In 1970, Hamilton Smith isolated the first restriction enzyme. Restriction enzymes are used to cut strands of DNA at specific points. This discovery led to the development of recombinant DNA, which is widely used in several scientific industries to produce proteins and hormones more cheaply and in much larger quantities than earlier methods. The change in scientific knowledge caused by Smith’s discovery most directly affected which sector of society?

A
technology
B
commerce
C
government
D
education
7

Which career field is an applied science?

A
geology
B
biotechnology
C
physics
D
chemistry
8

Biology and geology are two very different sciences, but biologists and geologists use scientific knowledge in the same way. These scientists both use scientific knowledge to

A
answer questions and solve problems affecting the natural world.
B
investigate the chemical composition of the Earth’s different layers.
C
observe and classify living organisms into groups.
D
explain the rituals and traditions of human cultures.
9

What is one way that early scientific practice differed from modern scientific practice?

A
Early hypotheses were not based on observations.
B
Early hypotheses were not tested by experimentation.
C
Early hypotheses were formed from scientific questions.
D
Early hypotheses were influenced by creative thinking.
10

A scientist noticed that a dark-colored peppered moth is more visible on a light-colored background than a light-colored peppered moth. He wonders, “Does this difference in visibility affect the survival rate of dark moths?” Which part of the scientific method does he need to carry out next?

A
Pose a question.
B
Form a hypothesis.
C
Interpret data.
D
Form a conclusion.

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