Exam (elaborations)
BIOL 250 FINAL EXAM With correct answers.
- Course
- Institution
BIOL 250 FINAL EXAM With correct answers.
[Show more]
Seller
Follow
Content preview
BIOL 250 FINAL EXAM With correctanswers
Robert Hooke - correct answer::developed the first microscope, used to look at plant cells, first to use
the term cells-- looked like what monks lived in
Anton Van Leeuwenhoek - correct answer::father of microbiology
first to look at living material-- scraped his teeth and saw that sick people had different microogranisms
than his did
Carolus Linnaeus - correct answer::binomial nomenclature
schleiden and schwann - correct answer::formulated the cell theory-- cells are fundamental unit of life
and carry out functions of all living things
Louis Pasteur - correct answer::swan flask experiment-- if the flask was tipped then it would come in
contact with particles and growth would occur immediately
Koch's postulates - correct answer::When determining the causative agent of disease...
1. specific causative agent must be fond in every case of the disease
2. the disease organism must be isolated into pure culture
3. inoculate a sample of the culture into a previously healthy individual-- must produce the same disease
symptoms
4. culture recovered from the inoculated animal must be the same as the original disease causing agent
What did Koch identify the causative agents of - correct answer::cholera-- Vibrio cholerae
tuberculosis--Mycobacterium tuberculosis
anthrax-- Bacillus anthracis
,Phillip Semmelweis - correct answer::doctors should wash their hands-- connection between doctors
doing autopsies and delivering babies
Joseph Lister - correct answer::father of antiseptic surgery
atom - correct answer::smallest chemical unit
element - correct answer::composted of one kind of matter
molecule - correct answer::two or more atoms combied-- O2
compound - correct answer::multiple elements- C6H12O6
atomic weight - correct answer::sum of protons and neutrons
atomic number - correct answer::sum of protons in the nucleus
cations - correct answer::lose an electron when joined with another atom, become more positively
charged
anion - correct answer::gain an electron, become more negatively charged
isotopes - correct answer::atoms within elements that have different number on neutrons-- ex.
carbon12,13,14
gram molecular weight - correct answer::adding based on atomic weights
Avogadro's number - correct answer::6.023x10^23
ionic bond - correct answer::outermost electrons are transferred from one orbital to another
, covalent bond - correct answer::sharing on electrons between orbitals-- certain arrangements are
favorable and can hold the structure of compounds together
hydrogen bond - correct answer::interactions among postvely and negatively charged assets-- weak
individually but stronger molecular strength when grouping
catabolism - correct answer::two elements/compounds joined together to release the energy (break
down of substances)
anabolism - correct answer::building of substances
qualities of water - correct answer::1. act as a solvent bc of its polar nature, negative attracts positive,
vice versa
2. surface tensions-- provides physical strenght
3. high specific heat-- heat can be maintained in living entities, ex. maintaining body temp
4. medium for most chemical reactions
mixture - correct answer::two substances combined but not chemically bound-- sugar and salt
solution - correct answer::two substances combined and not easily broken-- salt or sugar in water
solute - correct answer::the substance that is dissolved-- the sugar
solvent - correct answer::solutions in which substances are dissolved
pH scales - correct answer::relates concentration to a numeric value
carbohydrates - correct answer::main source of energy for most living things
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 Lectphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81311 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now