Exam (elaborations)
UCI Bio 93- Midterm 1 Exam 2023
- Course
- Institution
UCI Bio 93- Midterm 1 Exam 2023...
[Show more]
Content preview
UCI Bio 93- Midterm 1 Exam 2023atoms - ANSWER smallest unit of chemical elements
molecules - ANSWER two or more atoms combined
compound - ANSWER two or more elements combined in a fixed ration
C, O, H, N - ANSWER ... are 4 elements that make up 96% of all living matter
covalent bond - ANSWER what is the strongest bond?
covalent - ANSWER sharing of electrons by two atoms
ionic - ANSWER transfer of electrons between two atoms
hydrogen bond - ANSWER what is a weak bond?
hydrogen bond - ANSWER the H atom forms one covalent bond and a second
weaker bond with an atom in another molecules
nonpolar - ANSWER equal sharing of electrons
(two of the same element)
polar - ANSWER unequal sharing of electrons
has a charge
(water)
negative - ANSWER what is the charge of O in water?
positive - ANSWER what is the charge of H in water?
cohesion - ANSWER interactions between water molecules
(H2O with H2O)
solvent - ANSWER interactions between water and other molecules
4 bonds - ANSWER what is the maximum amount of bonds that hydrogen can
form?
15% - ANSWER in room temperature of water what % is the maximum amount of
bonds going to be made?
,more acidic - ANSWER when H+ concentration increases...
more basic - ANSWER what H- concentration decreases...
hydrophilic - ANSWER affinity for water
(polar and ionic bonds)
hydrophobic - ANSWER repel water
(nonpolar covalent bonds)
buffers - ANSWER chemical processes are sensitive to pH changes and resist
change in the pH solution
7.4 - ANSWER the pH of human blood is...
carbonic acid and bicarbonate - ANSWER what are the main buffers in blood?
right - ANSWER response to a rise in pH in blood (becomes more basic)
left - ANSWER response to a drop in pH in blood (becomes more acidic)
carbon atoms - ANSWER building blocks for biological molecules
4 VE - ANSWER how many VE does carbon have?
covalent bonds - ANSWER how do functional groups join to the carbon skeleton?
hydroxyl - ANSWER -alcohols
-polar
-dissolves organic compounds (like sugars)
carbonyl - ANSWER -ketones (within skeleton)
-aldehydes (at the end of skeleton)
carboxyl - ANSWER -is acidic
-weak acid
-hydroxyl+carbonyl
amino - ANSWER -base
-animes
, -can pick up H from surrounding solutions
amino and carboxyl - ANSWER what functional groups make up an amino acid?
sulfhydryl - ANSWER -thiols
-cross-linking of cysteines
-stabilizes protein structure
phosphate - ANSWER -backbone for phospholipids
-negative charge
-hydrophilic
methyl - ANSWER -expression of genes
-sex hormones (shape and function)
carbohydrates, nucleic acids, lipids, and proteins - ANSWER what are the 4 types
of macromolecules?
carbohydrates, proteins and nucleic acids - ANSWER which macromolecules are
made of polymers?
lipids - ANSWER -diverse group of hydrophobic macromolecules
-built from two or more DIFFERENT small subunits
dehydration reaction - ANSWER removal of water molecules to form a polymer
(makes a bond)
hydrolysis - ANSWER addition of water to polymers to break bonds
carbohydrates - ANSWER sugars and their polymers
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 luzlinkuz. 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)
71184 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now