Bio 2170 Practice Exam 1 Questions And All Correct Answers.
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Course
Bio 2170
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Bio 2170
Observations allow scientists to draw tentative explanations called hypotheses. True or False - Answer True
When small molecules are linked together to form larger molecules, the increase in entropy typically comes from: - Answer Heat
______is NOT a domain of life. - Answer Protists
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Bio 2170 Practice Exam 1 Questions And
All Correct Answers.
Observations allow scientists to draw tentative explanations called hypotheses. True or False - Answer
True
When small molecules are linked together to form larger molecules, the increase in entropy typically
comes from: - Answer Heat
______is NOT a domain of life. - Answer Protists
The primate MOST closely related to humans is the: - Answer Chimpanzee
Imagine that you are standing in a field and you see a group of butterflies. You notice an individual that
looks significantly different from the other butterflies in the population. This difference allows the
butterfly to escape predation more efficiently than other butterflies in the population. How might this
trait have arisen in the individual? - Answer There was a random mutation in a gene that led to
differences in the ability to escape predation.
What is an example of the first law of thermodynamics in action? - Answer Light energy is transformed
into chemical energy during photosynthesis.
Living systems differ from non-living systems in that energy not used to do work is lost as heat, reducing
the total amount of energy in the universe. True or False - Answer False
Organisms that possess a nucleus are called prokaryotes; organisms that do not possess a nucleus are
called eukaryotes. True or False - Answer False
Most of the diversity of life on this planet comes from microbes. True or False - Answer True
The study of how organisms interact with each other and with their physical environment is referred to
as _____. - Answer Ecology
,Human activities have likely aided in the dispersal-and success-of what organisms? - Answer Wheat,
bed bugs, and chickens
In the context of the scientific method, the words theory and hypothesis can be used interchangeably.
True or False - Answer False
What is true about Louis Pasteur? - Answer His work using broth and swan-neck flasks demonstrated
that microbes are produced by other microbes.
What entity does not possess the ability to synthesize its own proteins? - Answer A virus
Currently, antibiotic-resistant bacteria are a major concern for all of us. Antibiotic bacteria have arisen
through natural selection. True or False - Answer True
Consider the following two statements:
Determine which one of the options below is correct.
1 - Animal behavior can be required for the reproductive success of plants.
2 - Animal behavior can be detrimental to the reproductive success of plants. - Answer Statements 1
and 2 are both true.
What species is endangered by human activity, but not yet extinct? - Answer The African white
rhinoceros
What statement about hypotheses is incorrect? - Answer Hypotheses that provide reasonable
explanations do not need to be tested.
What statements about hypothesis are correct? - Answer Hypotheses make predictions about
observations not yet made, A collection of related hypotheses that endures repeated testing is called a
theory, Hypotheses can be tested by experiments or by making additional observations.
, Consider a phylogenetic tree. The node at the bottom of the tree (i.e., the "root") would represent
what? - Answer The common ancestor of all organisms included in the tree.
Through interactions with insects, birds, and other organisms, plants have evolved what? - Answer
Nectar, fruit, colored flowers, and scented flowers.
In the scientific method, hypotheses lead most directly to: - Answer Predictions
Given the high degree of "order" living organisms demonstrate, the second law of thermodynamics can
never be applied to life. True or False - Answer False
In which of the following domains do the cells store their genetic information in a nucleus? - Answer
Eukarya
You may know that, on average, individuals were shorter 400 years ago compared to today. The fact that
modern-day humans are now taller is likely a reflection of: - Answer Environmental and genetic
variation
Imagine that you are comparing the teeth of a wolf to those of an elephant. As you probably know, a
wolf's teeth are sharp, whereas an elephant's teeth are flatter and broader. Different tooth shapes likely
evolved to meet organisms' different dietary requirements. True or False - Answer True
Imagine that a researcher claimed to have created a genetically modified plant that produces twice as
much energy as it harnesses from its environment. How could this be possible? - Answer This is not
possible because such a plant would violate the second law of thermodynamics.
Entropy can be thought of as the amount of _____ in a system. - Answer disorder
In Pasteur's experiment showing that living organisms arise from other living organisms,what statement
most accurately describes Pasteur's hypothesis? - Answer If microbes arise from non-living matter, they
should appear spontaneously in sterile broth.
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