TEST SHEET FULL SOLUTIONS CORRECT
ANSWERS GUARANTEED PASS
◉ What is Biology?
Answer: the study of life
◉ What is the typical presentation of the scientific method?
Answer: Purpose (state the problem)
Research (find out about the topic)
Hypothesis (predict the outcome of the problem)
Experiment (develop a procedure to test the hypothesis)
Analysis ( Record the results of the experiment)
Conclusion ( Compare the hypothesis to the experiment's
conclusion)
◉ What types of studies can be done?
Answer: Observational Studies (patterns found in nature)
Quasi- Experimental Studies ( making use of natural differences)
Manipulative Experiments (Changing the conditions to test ideas)
,◉ What are the steps to develop an experiment?
Answer: asking a specific question, conducting background research,
constructing a testable hypothesis, designing the procedure,
analyzing data, and communicating results.
◉ What is life? Cell theory
Answer: Cells- all life is made up of cells
-Single-celled to multicellular
◉ What is metabolism?
Answer: The chemical processes that occur within a living organism
in order to maintain life.
◉ What is homeostasis?
Answer: the body's automatic process of maintaining a stable,
balanced internal environment despite changing external conditions
◉ What is evolution?
Answer: All life can evolve (as a group)
◉ What are the differences between hypothesis, theory and fact?
Answer: Hypotheses: A reasoned explanation that generates testable
predictions
,Fact: A repeatedly observed/confirmed phenomenon
Theory: A well-supported testable explanation.
◉ What are some pieces of direct observations of evolution?
Answer: Antibiotic resistance in bacteria.
Pesticide Resistance in crop pests.
Changes in genetic disease prevalence across human populations.
Rapid Shifts in morphology and behavior of natural populations due
to land use and climate change.
Continued evolution in modern humans
◉ What is a homology? Give an example
Answer: Shared similarities between species due to common
ancestry. Vertebrate forelimb
◉ What is an analogy? Give an example
Answer: Similar structures due to evolutionary processes, not
shared ancestry. Wings in birds and insects, shark fins and dolphin
flippers.
◉ How does the fossil record inform evolution?
Answer: The petrified remains or impression of a prehistoric
organism.
, ◉ What is a vestigial structure?
Answer: Traits that are gradually reduced and no longer retain their
primary function ( still present in related lineages).
◉ What is homoplasy vs analogy?
Answer: Homology: Shared similarities between species due to
common ancestry.
Analogy: Similar structures resulting from evolutionary processes,
not from shared ancestry.
◉ What is population genetics?
Answer: Study of the distribution of alleles in populations and the
causes of allele frequency changes
◉ What are alleles?
Answer: A particular version of DNA at a locus
◉ What are genotypes?
Answer: The combination of alleles found in an individual
◉ What is homozygous?
Answer: An individual carries two copies of the same allele