Exam (elaborations)
WVU Bio 219 Exam 1: Questions & Detailed Answers
- Course
- Institution
WVU Bio 219 Exam 1: Questions & Detailed Answers
[Show more]
Content preview
WVU Bio 219 Exam 1: Questions & Detailed AnswersG-proteins are active when bound to which of the following? Right Ans -
GTP
TRUE or FALSE: G-proteins are turned on by creating GTP from GDP and Pi.
Right Ans - False
TRUE or FALSE: G-proteins are turned off by hydrolyzing GTP to GDP and
phoshpate. Right Ans - True
Which of the following removes GDP and adds GTP (ie: they are exchanged) to
turn on G-proteins? Right Ans - GEF
Which of the following refers to signaling between cells over long distances?
Right Ans - Endocrine
During cell-signalling, where does the ligand bind? Right Ans - The extra-
cellular domain
What does Carl Sagan say we are all made of? Right Ans - Star dust
How many covalent bonds can oxygen form? Right Ans - 2
The following figure shows water molecules (H2O) interacting together.
Which kind of chemical interaction is represented by the solid (undashed)
lines?
Water molecules interacting Right Ans - covalent bonds
Which of the following best describes hydrophobic interactions?
Options: A. The hydrophobic parts of the molecule are attracted to each other?
B. The hydrophilic parts of the molecule are attracted to each other
C. The hydrophobic parts of the molecule are driven together to avoid water
and other hydrophilic or polar molecules. Right Ans - C. The hydrophobic
parts of the molecule are driven together to avoid water and other hydrophilic
or polar molecules.
, Which of the following is the strongest bond in an aqueous environment, like a
cell? Right Ans - Covalent bonds
Protein components Right Ans - amino acids
nucleic acids components Right Ans - nucleotides
Polysaccharide components Right Ans - Monosaccharides (glucose,
galactose)
Lipid Components Right Ans - Glycerol, Fatty Acids, Steroids
Protein Assemblers Right Ans - Ribosomes
Nucleic Acid Assemblers Right Ans - Polymerases
Polysaccharide Assembler Right Ans - Glycosyl transferases
Lipid assemblers Right Ans - Fatty acid syntheses
Secondary and higher structures are formed by Right Ans - Intra-molecular
assembly using non covalent interactions
Superstructures are built by Right Ans - Inter-molecular assembly using
non-covalent interactions
protein self-assembly drivers Right Ans - hydrophobic- hydrophobic
interactions
Charged- ionic interactions
uncharged/polar- hydrogen and covalent bonds
nucleic acid self assembly drivers Right Ans - Hydrogen bonding
Lipid self assembly driver Right Ans - hydrophobic interactions
Polysaccharide self assembler Right Ans - None
Which of these amino acids is likely to form an ionic bond with lysine?
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 Studyhall. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now