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Unit 1 Mastering Biology Exam Questions and Answers
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Unit 1 Mastering Biology Exam Questions and Answers
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Unit 1: Mastering Biology ExamQuestions and Answers
DNA is composed of building blocks called - Answer -nucleotides
In eukaryotic cells DNA has the appearance of a - Answer -double helix
What is the correct order for the hierarchy of biological organization from least to most
complex - Answer -molecule,
organelle,
cell,
tissue,
organ,
organ system,
organism,
population,
community,
ecosystem
No amino acid molecule by itself can speed up or catalyze reactions between other
molecules; however, when amino acids are joined together to make a protein with
catalytic properties, the new structure (enzymatic protein) can speed up the rate of a
specific chemical reaction. What does this illustrate? - Answer -emergent properties
Which of the following statements is true about chemical nutrients in an ecosystem -
Answer -They recycle within the ecosystem being constantly reused
Which of the following attributes is common to both prokaryotic cells and eukaryotic
cells? - Answer -the use of DNA as the information storage molecule
How does DNA (deoxyribonucleic acid) encode information? - Answer -in the sequence
of nucleotides.
In the snowy tree cricket experiment which ones were controls and which were
experimental groups - Answer -male snowy tree cricket and and female field cricket:
control
female snowy tree cricket: experimental group
Which taxonomic domain includes multicellular photosynthetic organisms? - Answer -
Eukarya
, competition is central to the theory of natural selection. Why does competition occur? -
Answer -Organisms typically produce too many offspring, and resources are limited
Which of the following is an example of "unity in diversity"?
(3 examples) - Answer -The structure of DNA is the same in all organisms.
The forelimbs of all mammals have the same basic structure, modified for different
environments.
All organisms, including prokaryotes and eukaryotes, use essentially the same genetic
code.
In order for a hypothesis to be able to be used in science, which of the following must
be true? - Answer -It is testable and falsifiable.
Which of the following is true of a scientific theory - Answer -It generates testable
hypotheses, is supported by a large body of evidence, and is broad in scope.
Which of the following statements is not true of scientific experiments? - Answer -They
must occur under carefully controlled conditions found in a laboratory.
In an experiment, investigators try to control all of the variables except one—the one
that tests the hypothesis. Which of the following reasons is the primary rationale for
controlling variables in an experiment? - Answer -To eliminate alternative explanations
for the results of an experiment
Which of the following statements is true of a hypothesis? - Answer -A hypothesis can
be supported or rejected through experimentation.
Which of the following variables did Pasteur change in his experiment to test the
hypothesis of spontaneous generation? - Answer -The shape of the flask
In Pasteur's experiment to test the hypothesis of spontaneous generation, why did he
boil the broth in both flasks? - Answer -To kill any existing organisms in the broth
What results from the Zonosemata experiment support the sub-hypothesis that wing
waving alone reduces predation by jumping spiders? - Answer -Zonosemata flies with
housefly wings are attacked less frequently.
Suppose that Zonosemata flies whose own wings had been clipped and reattached
were attacked more frequently than untreated Zonosemata flies. How would this result
affect the reliability of the other experimental results? - Answer -All results for the
experimental groups involving wing surgery would be invalid.
In the course of a conversation, you observe that three of your friends like horror
movies. Horror movies happen to be your favorite type of movie as well. You also know
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