Life Science 15: midterm (UCLA) || All Solved.
What is scientific thinking used for? correct answers to create a better understanding of the
world. there are 5 steps
How does scientific thinking work? correct answers 1. making observations
2. formulate a hypothesis
3. making a prediction
4. conduct an experiment
5. conclusion
example of scientific thinking.... correct answers I have observed that when people take steroids
they become bigger. therefore I would apply all five steps to this hypothesis to receive an
outcome.
How does a hypothesis differ from a theory? correct answers A hypothesis is a provisional or
working explanation, assumed true only to guide experimentation or for the sake of argument. A
prediction is an assumption made from anecdotal observations.
what does it mean to control an experiment? correct answers a group of subjects who are treated
identically to an exprimental group with one exception. EX: one group recieves steriods while
the other group does not. We are controlling how much they eat,sleep, and train to identify the
specific different outcome of the people taking steroids and not.
Pseudoscience correct answers set of claims that seems scientific but isn't EX: Autism and
Vaccine correlation
compare and contrast pseudoscience to superstitions and anecdotal science correct answers EX:
pushing an elevator button to make the elevator come faster. Or the rats pushing the lever with
delayed time creating a "superstition" to be preformed in order to retrieve the treat.
, more and more observations that support a hypothesis to be true, does this make it true? correct
answers no, because scientist can only become more and more confident within a "theory" or
"hypothesis." these
What is evolution? correct answers change in allele frequencies in a population over time
When can evolution occur? correct answers evolution can occur when there is 4 different ways
1. Mutation
2. Migration/ genetic flow
3.Genetic Drift
4. Natural Selection
Mutation correct answers a drift aleration of DNA/ ones alleles is changed to another. This is
essential to the population. EX: radiation can change allele/DNA
What is natural selection? correct answers 1. Variability of trait
2. heritable
3. differential reproductive success
gentic drift correct answers Random change in allele frequencies
migration or gene flow correct answers the movement of some individuals of a species from one
population to another
Ideas and observations that influenced Darwin? correct answers During his research he was told
that all species are the same and extinction doesn't exist. on his travels around the word for came
across two species that looked very similar, yet were not the same. (Finch). these species were on
two different places and he realized that "evolution" had occured
1. mutation
What is scientific thinking used for? correct answers to create a better understanding of the
world. there are 5 steps
How does scientific thinking work? correct answers 1. making observations
2. formulate a hypothesis
3. making a prediction
4. conduct an experiment
5. conclusion
example of scientific thinking.... correct answers I have observed that when people take steroids
they become bigger. therefore I would apply all five steps to this hypothesis to receive an
outcome.
How does a hypothesis differ from a theory? correct answers A hypothesis is a provisional or
working explanation, assumed true only to guide experimentation or for the sake of argument. A
prediction is an assumption made from anecdotal observations.
what does it mean to control an experiment? correct answers a group of subjects who are treated
identically to an exprimental group with one exception. EX: one group recieves steriods while
the other group does not. We are controlling how much they eat,sleep, and train to identify the
specific different outcome of the people taking steroids and not.
Pseudoscience correct answers set of claims that seems scientific but isn't EX: Autism and
Vaccine correlation
compare and contrast pseudoscience to superstitions and anecdotal science correct answers EX:
pushing an elevator button to make the elevator come faster. Or the rats pushing the lever with
delayed time creating a "superstition" to be preformed in order to retrieve the treat.
, more and more observations that support a hypothesis to be true, does this make it true? correct
answers no, because scientist can only become more and more confident within a "theory" or
"hypothesis." these
What is evolution? correct answers change in allele frequencies in a population over time
When can evolution occur? correct answers evolution can occur when there is 4 different ways
1. Mutation
2. Migration/ genetic flow
3.Genetic Drift
4. Natural Selection
Mutation correct answers a drift aleration of DNA/ ones alleles is changed to another. This is
essential to the population. EX: radiation can change allele/DNA
What is natural selection? correct answers 1. Variability of trait
2. heritable
3. differential reproductive success
gentic drift correct answers Random change in allele frequencies
migration or gene flow correct answers the movement of some individuals of a species from one
population to another
Ideas and observations that influenced Darwin? correct answers During his research he was told
that all species are the same and extinction doesn't exist. on his travels around the word for came
across two species that looked very similar, yet were not the same. (Finch). these species were on
two different places and he realized that "evolution" had occured
1. mutation
