Bio 100 Exam 1 SDSU || 100% verified answers.
What is Biology? correct answers study of living organisms.
What type of science is bio? correct answers Natural Science, occurs naturally in nature not man
made. Others are math, physics,or geology.
Five steps of scientific method? correct answers 1) Observe
2) Hypothesize
3) Make prediction
4) Test
5) Draw a conclusion
Observe correct answers Look for interesting patterns or cause-and-effect relationships
Formulate a hypothesis correct answers Hypothesis: a proposed explanation for observed
phenomena
Null hypothesis: a hypothesis that states a lack of relationship between two factors; stated as a
negative
Ex. "Echinacea has no effect on the duration and severity of cold symptoms"
Hypothesis must be falsifiable to be scientific
Make a prediction correct answers o "If...Then..."
o Must be testable
Conduct an experiment correct answers o An experiment that makes it possible to decisively
determine whether a particular hypothesis is correct
o Need experimental groups, placebo, control groups, treatment, variables etc.
, Hypothesis vs Law and Principle correct answers o Hypothesis: a proposed explanation for
observed phenomena
o Theory: a hypothesis that has been repeatedly tested and supported
o Law (Principle): a theory that has been repeatedly tested and supported
Comparative method correct answers Special case of the scientific method
o Ex: Seals are more closely related to dogs than to cats (can't really test anything)
o Compares patterns of similarity between seals, dogs, and cats
o Cannot be tested with traditional experiments
Placebo correct answers a substance that has no effect, used as a control in testing new drugs
Atoms correct answers Atoms are the subunit of all life including molecules
There are 92 naturally occurring atoms
Consist of:
Nucleus (Protons [+] and Neutrons[0])
Electrons (Negative charge; rotate around nucleus in "shells")
4 atoms of life. make up 95% of all life correct answers carbon
oxygen
nitrogen
hydrogen
(COHN - carbon oxygen hydrogen nitrogen)
atomic number correct answers number of protons in nucleas
What is Biology? correct answers study of living organisms.
What type of science is bio? correct answers Natural Science, occurs naturally in nature not man
made. Others are math, physics,or geology.
Five steps of scientific method? correct answers 1) Observe
2) Hypothesize
3) Make prediction
4) Test
5) Draw a conclusion
Observe correct answers Look for interesting patterns or cause-and-effect relationships
Formulate a hypothesis correct answers Hypothesis: a proposed explanation for observed
phenomena
Null hypothesis: a hypothesis that states a lack of relationship between two factors; stated as a
negative
Ex. "Echinacea has no effect on the duration and severity of cold symptoms"
Hypothesis must be falsifiable to be scientific
Make a prediction correct answers o "If...Then..."
o Must be testable
Conduct an experiment correct answers o An experiment that makes it possible to decisively
determine whether a particular hypothesis is correct
o Need experimental groups, placebo, control groups, treatment, variables etc.
, Hypothesis vs Law and Principle correct answers o Hypothesis: a proposed explanation for
observed phenomena
o Theory: a hypothesis that has been repeatedly tested and supported
o Law (Principle): a theory that has been repeatedly tested and supported
Comparative method correct answers Special case of the scientific method
o Ex: Seals are more closely related to dogs than to cats (can't really test anything)
o Compares patterns of similarity between seals, dogs, and cats
o Cannot be tested with traditional experiments
Placebo correct answers a substance that has no effect, used as a control in testing new drugs
Atoms correct answers Atoms are the subunit of all life including molecules
There are 92 naturally occurring atoms
Consist of:
Nucleus (Protons [+] and Neutrons[0])
Electrons (Negative charge; rotate around nucleus in "shells")
4 atoms of life. make up 95% of all life correct answers carbon
oxygen
nitrogen
hydrogen
(COHN - carbon oxygen hydrogen nitrogen)
atomic number correct answers number of protons in nucleas
