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BSC 2010 Exam 1 Review Questions and answers graded A+
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BSC 2010 Exam 1 Review Questions and answers graded A+
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BSC 2010 Exam 1 Review QuestionsDescribe how the characteristics of an organism differ from those of non-living thing . - correct answer
✔✔•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. - correct answer ✔✔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? - correct answer ✔✔a. Bacteria, Archaea
b. Eukarya
Which kingdoms are part of Domain Eukarya and which types of organisms does each of them contain? -
correct answer ✔✔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? - correct
answer ✔✔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? - correct answer ✔✔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. - correct answer ✔✔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? - correct
answer ✔✔deductive reasoning.
9. In an atom, why does the number of electrons always have to balance the number of protons? -
correct answer ✔✔to make the atom electrically neutral
10. Explain why certain atoms seek to form chemical bonds with other atoms. - correct answer
✔✔because they have vacancies in their outer electron shells.
11. Why is the shape of a molecule so important? - correct answer ✔✔Molecular shape determines how
biological molecules function, recognize, and respond to one another with specificity.
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