BIO 201 Final Exam UNCW Questions and Complete Solutions
4 views 0 purchase
Course
BIO 201
Institution
BIO 201
Explain how science is a process of inquiry inquiry means questions, and these questions are based on the natural world
List the characteristics common to all living things -maintain organized structure -metabolize -grow, reproduce, and die -respond to environment
Order the organizational units o...
BIO 201 Final Exam UNCW Questions
and Complete Solutions
Explain how science is a process of inquiry ✅inquiry means questions, and these
questions are based on the natural world
List the characteristics common to all living things ✅-maintain organized structure
-metabolize
-grow, reproduce, and die
-respond to environment
Order the organizational units of life from smallest to largest ✅atoms-
>molecules/macromolecules->cells->tissues->organs->organism->population-
>community->ecosystem->biosphere
Recognize the 3 domains of life ✅prokaryotes, eukaryotes, archaea
Explain how the theory of evolution unifies all life on earth ✅provides biological unity
(similarity) and diversity (differences)
Distinguish atomic number, atomic mass, and valence ✅-atomic number= number of
protons
-atomic mass= sum of protons and neutrons
-valence= outermost shell of electrons
Classify chemical bonds as either covalent, ionic, or hydrogen and rank their relative
strength ✅-covalent: strongest bond, occurs when 2 atoms share 1 or more pairs of
valence electrons (ex: h2o)
-ionic: 2nd strongest, occurs when attraction is between oppositely charged ions (ex:
nacl)
-hydrogen: weakest, occurs when hydrogen atom is covalently bound to an e-neg atom
Distinguish polar from nonpolar covalent bonds ✅-polar: unequal sharing of electrons,
0.4-2.0
-non-polar: equal sharing, <0.4
Explain the relationship between the polar nature of water and its ability to form
hydrogen bonds ✅water readily dissolves polar molecules, displays cohesion
(attraction between water molecules by hydrogen bonding) and adhesion (attraction of
different molecules by hydrogen bonding)
, Describe buffers and explain their importance to living organisms ✅buffers act as
minimizers of changes in ph in a solution
Summarize why carbon forms diverse organic molecules ✅carbon is the building block
of organic molecules
Describe the 4 classes of biological macromolecules ✅-carbohydrates
-proteins
-fats
-nucleic acids
Recognize common carbohydrate monomers and polymers ✅monomers:
-monosaccharides (6 carbon sugars)
1. Glucose: primary source of energy
2. Fructose: simple sugar found in plants
3. Galactose: simple sugar found in dairy products
-disaccharides (2 monosaccharides joined covalently)
1. Lactose "milk sugar": galactose and glucose
2. Maltose "malt sugar": 2 glucoses
3. Sucrose "table sugar": fructose and glucose
-polysaccharides (hundreds-thousands of monosaccharides)
1. Starch: moderately branched
2. Glycogen: highly branched
3. Cellulose: unbranched
Compare and contrast the structure and function of triacylglycerol, phospholipids, and
steroids ✅-triacylglycerol: fats, can be saturated or unsaturated
-phospholipids: composed of 1 glycerol, 2 fatty acids, and 1 phosphate group with a
polar group; contain polar "heads" and nonpolar "tails"; spontaneously organize in
aqueous solutions
-steroids: lipids characterized by carbon skeleton containing 4 fused rings; vary by
functional groups added to rings; include cholesterol and sex hormones
Describe the components of a nucleotide ✅-pentose sugar
-nitrogenous base
-phosphate group
Compare and contrast dna and rna's chemical composition ✅-dna: c3h10o4
-rna: c5h10o5
-both: made up of nucleotides, where dna has t, a, g, and c, and rna has u, a, g, and c
Describe the general structure of an amino acid and the importance of the side chain
chemistry ✅amino acids have a central carbon, which is connected to an amino group
(nh2), and carboxyl group (cooh), a hydrogen, and an r group that determines the
chemical of the amino acid
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 twishfrancis. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.99. You're not tied to anything after your purchase.
