Exam (elaborations)
BIOL 101 Exam 1 Exam Questions and Answers Latest Update
- Course
- Institution
BIOL 101 Exam 1 Exam Questions and Answers Latest Update
[Show more]
Content preview
BIOL 101 Exam 1 Exam Questions andAnswers Latest Update
theory - Answer-a general set of principles (supported by evidence) that explains some
aspect of nature; never PROVEN true
scientific method - Answer-a systematic process through which scientists formulate
hypotheses and make conclusions about the natural world
observation--> question--> hypothesis-->
experiment--> conlcusion
hypothesis - Answer-a tentative, testable explanation that is tested via observation or an
experiment; must be falsifiable
falsifiable - Answer-able to be proven false; testable
> ex. a hypothesis that is not shown to occur in an experiment is falsified
biology - Answer-the study of life and living things
characteristics of life - Answer-all living things must...
1. use energy
2. respond to environment
3. maintain a stable internal environment (homeostasis)
4. reproduce
5. possess inherited genetic information (DNA)
6. be made of 1 or more cells
7. be evolved from other living things
8. be highly organized (compared to nonliving objects)
high organization (hierarchy) - Answer-life is highly organized into a categorical
hierarchy
> ex. atom--> molecule--> organelle--> cell--> tissue-->
organ--> organ system--> organism--> population-->
community--> ecosystem--> biosphere
reproduction - Answer-an organism's ability to pass on its genetic information to
offspring; i.e. "making more of yourself"
cell - Answer-the smallest unit of life
cell theory - Answer-1. cells are the basic unit of life
2. all living things are made up of cells
3. cells can only come from preexisting cells
, DNA - Answer-deoxyribonucleic acid; a complex molecule used to transmit genetic
information from one generation to the next
homeostasis - Answer-the tendency of living things to maintain a relatively stable
internal environment
> ex. shivering when cold to warm yourself back up, throwing up after eating bad food to
make sure you're not poisoned/injured
evolution - Answer-Charles Darwin's idea that a species adaptively changes over time;
a central theme of biology
provisional assent - Answer-every scientific assertion (whether it's a hypothesis or
theory) is subject to revision/change in the future
spontaneous generation - Answer-the belief that life can arise from nonliving material
> ex. maggots are "born" from rotting meat
Louis Pasteur - Answer-French scientist who used a series of experiments to prove the
idea of spontaneous generation is false; i.e. life cannot magically arise from non life
atom - Answer-fundamental building blocks of matter; made up of protons, neutrons,
and electrons
proton - Answer-subatomic particle with a positive (+) charge, located in the nucleus,
mass = 1 amu
neutron - Answer-subatomic particle with no charge, located in the nucleus, mass = 1
amu
valence electrons - Answer-the number of electrons located in an atom's outermost
(valence) electron shell; determines that atom's chemical properties/bonding patterns
element - Answer-a substance made of only one type of atom, defined by its atomic
number (number of protons); CANNOT be further broken down into simpler parts
electron - Answer-subatomic particle with a negative (-) charge, located in outer shell
within orbitals, no real mass
octet rule - Answer-all atoms attempt to fill their valence electron shell fully
(2 electrons in first shell, 8 electrons in all other shells)
isotope - Answer-atoms of the same element that differ in their number of neutrons
(thus, no charge difference)
> ex. C12, C13, C14 (isotopes of carbon)
hydrogen - Answer-the simplest element, contains 1 proton, 1 electron, and no neutrons
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lectknancy. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78075 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now