New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

BSC 114 Chapter 5b. notes

by: Lauren Dutch

BSC 114 Chapter 5b. notes BSC 114

Lauren Dutch
GPA 4.0

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

combo of lectures and book information
The Principles of Biology 1
Dr. Stephenson
Class Notes
25 ?




Popular in The Principles of Biology 1

Popular in Biology

This 3 page Class Notes was uploaded by Lauren Dutch on Saturday September 17, 2016. The Class Notes belongs to BSC 114 at University of Alabama - Tuscaloosa taught by Dr. Stephenson in Fall 2016. Since its upload, it has received 4 views. For similar materials see The Principles of Biology 1 in Biology at University of Alabama - Tuscaloosa.


Reviews for BSC 114 Chapter 5b. notes


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 09/17/16
Chapter 5b. Proteins and Nucleic Acids I. Proteins include a diversity of structures, resulting in a wide range of functions A. Make up 50% of the mass of cells B. Function as enzymes, structure, transport, movement, DNA synthesis, transcription, translation, regulation, etc. C. Polymer is called a protein/polypeptide 1. Monomer is an amino acid  Alpha carbon  Carboxyl group  Amino group  Hydrogen  R group  Side chain  20 different chemical groups  Property of amino acid is determined by the R group  Can be nonpolar/hydrophobic or polar/hydrophilic 2. Amino acids are joined by dehydration reactions between the amino group of one monomer and the carboxyl group of another monomer  Peptide bond  Repeating backbone of N-C-C  R groups extend from the backbone D. Structures 1. Primary structure is the order of amino acids in a polypeptide  Determined by instructions in genes  Can be tens to thousands of amino acids in length  N terminus on one end (exposed amino group), C terminus on other end (exposed carboxyl group) 2. Secondary  Local interactions due to hydrogen bonds between amino and carbonyl groups  2 common structures  Alpha helix- backbone makes a spiral and is held together by hydrogen bonds between amino and carbonyl groups of every th 4 amino acid  Beta pleated sheet- backbone makes waves or pleats because adjacent strands are aligned by hydrogen bonds 3. Tertiary  Overall large scale 3D structure  Interactions between amino acid R groups  Globular proteins are compact and roughly spherical (lysozymes)  Fibrous proteins are extended and roughly linear (collagen)  Various interactions between R groups fold the proteins:  Noncovalent bonds such as hydrogen bonds, ionic interactions, Van der Waals forces  Hydrophobic interactions where water makes hydrogen bonds with polar and charged amino acid side chains but nonpolar hydrophobic R groups are forced into the internal, non-aqueous portion of the protein - Hydrophobic R groups are folded in while hydrophilic R groups are on the outside  Disulfide bridges are where two cysteine amino acids adjacent through folding form a covalent bond - Release a hydrogen compound - Two sulfurs are connected, hence the name disulfide bridge 4. Quaternary  Some proteins are composed of one or more polypeptides  Polypeptides are held together by hydrogen bonds, ionic bonds, Van der Waals forces, hydrophobic interactions, and disulfide bonds 5. The function of some proteins is to help others fold. These proteins are called helper proteins or chaperonins 6. Most genetic mutations are caused by mutations in genes that result in an altered amino acid sequence (e.g. sickle cell disease) II. Nucleic acids store, transmit, and help express hereditary information A. Polymer is called a polynucleotide (e.g. DNA and RNA) 1. Monomer is called a nucleotide  Nucleotides made of phosphate, pentose sugar (5 carbon carbohydrate), and a nitrogenous base  Phosphate = PO 4  Sugar is a pentose - Ribose in RNA - Deoxyribose in DNA (has 2 hydrogens on second carbon instead of a hydrogen and a carbonyl group, missing an oxygen)  Nitrogenous bases have 2 families - Pyrimidines are single rings made of 4 carbons and 2 nitrogens - Purines are double rings made of 5 carbons and 4 nitrogens  Sugar-phosphate-sugar-phosphate backbone with nitrogenous bases sticking out


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on my first study guide!"

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.