BSC 2010 EXAM 1 REVIEW QUESTIONS AND
100% CORRECT ANSWERS
Describe how the characteristics of an organism differ from those of non-living thing .
•Organisms acquire and use materials and energy.
•Organisms actively maintain organized complexity.
•Organisms perceive and respond to stimuli.
•Organisms grow.
•Organisms reproduce.
•organisms, collectively, have the capacity to evolve.
Nonliving objects may posses some of these attributes, but only life-forms can do it all.
Give an example of a process in the human body that is regulated by homeostasis and
expalin why maintaing homeostasis is necessary.
Body temperature
Homeostasis is necessary to sustain organization throughout a living organism.
Which of the 3 domains contain only single, prokaryotic cells? Which of the 3 domains
contain only eukaryotic organisms?
a. Bacteria, Archaea
b. Eukarya
Which kingdoms are part of Domain Eukarya and which types of organisms does each of
them contain?
Protists, single cells
Fungi, mushrooms, mold, mildew
Plantae, plants
Anamalia, animals
What is the different between a scientific theory and theory as thought of in laymen's
terms?
A scientific theory is a general explanation of important natural phenomena developed through
extensive and reproducible observations.It is assumed to be true unless proven false. A layman's
theory is an idea based on observations that has not been proven true.
Why is it important to use the scientific method?
To ensure validity of the experiment.
The effect of a new oral acne medicine is being tested on human volunteers. Volunteers are
divided into 4 groups: Group 1 swallows a 25mg dose, group 2 swallows a 50mg dose, and
group 3 swallows a 75 mg dose, and group 4 swallows a placebo (sugar pill with no effect)
once a day for 3 weeks. After the allotted time, before-and-after photos of the volunteers
, are analyzed by counting the number of pimples on the faces of each of the volunteers.
a.) State one possible hyopthesis for this experiment
b.) Which group(s) is/are the experimental group(s)? Which group is/are the control
group?
c.) What is/ are the variables in this experiment?
d.) Describe a possible factor (experimental or otherwise) which could lead to a false
interpretation of the results.
a.) Group 3 will have the least amount of pimples on their face because, they comsumed they
most amount of acne medicine with in the three week time period to prevent acne.
b.) Group(s) 1,2,3 are experimental group. Group 4 is the control group.
c.) The variables in this experiment are the different grams of medication being given to
manipulate the amount of acne medication, in which is needed to be given to prevent pimples on
ones face.
d.) One possible factor, that can lead to a false interpretation of results, is that the acne medicine
can fail to work and the volunteers consuming the 70 mg could have more acne now that they
have consumed this medicine, then before consuming the medication prior to the last three
weeks.
8. A new stork species is discovered in Nebraska. Storks are known to migrate south in the
winter time. The wildlife biologists who study them are expecting the new species to
migrate, so they are tagging the stork's legs with numbered bands. What kind of logical
reasoning are the biologists using?
deductive reasoning.
9. In an atom, why does the number of electrons always have to balance the number of
protons?
to make the atom electrically neutral
10. Explain why certain atoms seek to form chemical bonds with other atoms.
because they have vacancies in their outer electron shells.
11. Why is the shape of a molecule so important?
Molecular shape determines how biological molecules function, recognize, and respond to one
another with specificity.
12. In general, energy is __________ when chemical bonds are formed. Energy is
______________ when chemical bonds are broken.
released.
consumed.
13. What is the difference between covalent and ionic bonds, and which bond is stronger?
100% CORRECT ANSWERS
Describe how the characteristics of an organism differ from those of non-living thing .
•Organisms acquire and use materials and energy.
•Organisms actively maintain organized complexity.
•Organisms perceive and respond to stimuli.
•Organisms grow.
•Organisms reproduce.
•organisms, collectively, have the capacity to evolve.
Nonliving objects may posses some of these attributes, but only life-forms can do it all.
Give an example of a process in the human body that is regulated by homeostasis and
expalin why maintaing homeostasis is necessary.
Body temperature
Homeostasis is necessary to sustain organization throughout a living organism.
Which of the 3 domains contain only single, prokaryotic cells? Which of the 3 domains
contain only eukaryotic organisms?
a. Bacteria, Archaea
b. Eukarya
Which kingdoms are part of Domain Eukarya and which types of organisms does each of
them contain?
Protists, single cells
Fungi, mushrooms, mold, mildew
Plantae, plants
Anamalia, animals
What is the different between a scientific theory and theory as thought of in laymen's
terms?
A scientific theory is a general explanation of important natural phenomena developed through
extensive and reproducible observations.It is assumed to be true unless proven false. A layman's
theory is an idea based on observations that has not been proven true.
Why is it important to use the scientific method?
To ensure validity of the experiment.
The effect of a new oral acne medicine is being tested on human volunteers. Volunteers are
divided into 4 groups: Group 1 swallows a 25mg dose, group 2 swallows a 50mg dose, and
group 3 swallows a 75 mg dose, and group 4 swallows a placebo (sugar pill with no effect)
once a day for 3 weeks. After the allotted time, before-and-after photos of the volunteers
, are analyzed by counting the number of pimples on the faces of each of the volunteers.
a.) State one possible hyopthesis for this experiment
b.) Which group(s) is/are the experimental group(s)? Which group is/are the control
group?
c.) What is/ are the variables in this experiment?
d.) Describe a possible factor (experimental or otherwise) which could lead to a false
interpretation of the results.
a.) Group 3 will have the least amount of pimples on their face because, they comsumed they
most amount of acne medicine with in the three week time period to prevent acne.
b.) Group(s) 1,2,3 are experimental group. Group 4 is the control group.
c.) The variables in this experiment are the different grams of medication being given to
manipulate the amount of acne medication, in which is needed to be given to prevent pimples on
ones face.
d.) One possible factor, that can lead to a false interpretation of results, is that the acne medicine
can fail to work and the volunteers consuming the 70 mg could have more acne now that they
have consumed this medicine, then before consuming the medication prior to the last three
weeks.
8. A new stork species is discovered in Nebraska. Storks are known to migrate south in the
winter time. The wildlife biologists who study them are expecting the new species to
migrate, so they are tagging the stork's legs with numbered bands. What kind of logical
reasoning are the biologists using?
deductive reasoning.
9. In an atom, why does the number of electrons always have to balance the number of
protons?
to make the atom electrically neutral
10. Explain why certain atoms seek to form chemical bonds with other atoms.
because they have vacancies in their outer electron shells.
11. Why is the shape of a molecule so important?
Molecular shape determines how biological molecules function, recognize, and respond to one
another with specificity.
12. In general, energy is __________ when chemical bonds are formed. Energy is
______________ when chemical bonds are broken.
released.
consumed.
13. What is the difference between covalent and ionic bonds, and which bond is stronger?
