Bio 100 Exam 1 SDSU Questions and ANSWERs.
What is Biology? - ANSWER -study of living organisms.
What type of science is bio? - ANSWER -Natural Science, occurs naturally in
nature not man made. Others are math, physics, or geology.
Five steps of scientific method? - ANSWER -1) Observe
2) Hypothesize
3) Make prediction
4) Test
5) Draw a conclusion
Observe - ANSWER -Look for interesting patterns or cause-and-effect
relationships
Anaerobic Respiration - ANSWER -Anaerobic respiration = fermentation.
Anaerobic respiration is only 6% as efficient as aerobic respiration.
Anaerobic respiration is simply a means for cells to continue glycolysis
Lactic Acid Fermentation - ANSWER -a process of anaerobic that animal cells
carry out
2 pyruvates (C3) converted to 2 molecules of lactic acid (C3).
2 NADH oxidized back to NAD+ to be used again in glycolysis. Net
gain of 2 ATP
Formulate a hypothesis - ANSWER -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 - ANSWER -o "If...Then..." o
Must be testable
Conduct an experiment - ANSWER -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 - ANSWER -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 - ANSWER -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 - ANSWER -a substance that has no effect, used as a control in testing
new drugs
Atoms - ANSWER -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 - ANSWER -carbon
oxygen nitrogen hydrogen
(COHN - carbon oxygen hydrogen nitrogen)
atomic number - ANSWER -number of protons in nucleas
mass number - ANSWER -protons plus nuetrons
What is Biology? - ANSWER -study of living organisms.
What type of science is bio? - ANSWER -Natural Science, occurs naturally in
nature not man made. Others are math, physics, or geology.
Five steps of scientific method? - ANSWER -1) Observe
2) Hypothesize
3) Make prediction
4) Test
5) Draw a conclusion
Observe - ANSWER -Look for interesting patterns or cause-and-effect
relationships
Anaerobic Respiration - ANSWER -Anaerobic respiration = fermentation.
Anaerobic respiration is only 6% as efficient as aerobic respiration.
Anaerobic respiration is simply a means for cells to continue glycolysis
Lactic Acid Fermentation - ANSWER -a process of anaerobic that animal cells
carry out
2 pyruvates (C3) converted to 2 molecules of lactic acid (C3).
2 NADH oxidized back to NAD+ to be used again in glycolysis. Net
gain of 2 ATP
Formulate a hypothesis - ANSWER -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 - ANSWER -o "If...Then..." o
Must be testable
Conduct an experiment - ANSWER -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 - ANSWER -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 - ANSWER -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 - ANSWER -a substance that has no effect, used as a control in testing
new drugs
Atoms - ANSWER -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 - ANSWER -carbon
oxygen nitrogen hydrogen
(COHN - carbon oxygen hydrogen nitrogen)
atomic number - ANSWER -number of protons in nucleas
mass number - ANSWER -protons plus nuetrons
