Register
Client Area

iWriteGigs

support@iwritegigs.com
Facebook-f
Register
Client Area

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

People go to websites to get the information they desperately need.  They could be looking for an answer to a nagging question.  They might be looking for help in completing an important task.  For recent graduates, they might be looking for ways on how to prepare a comprehensive resume that can capture the attention of the hiring manager

Manush is a recent graduate from a prestigious university in California who is looking for a job opportunity as a real estate agent.  While he already has samples provided by his friends, he still feels something lacking in his resume.  Specifically, the he believes that his professional objective statement lacks focus and clarity. 

Thus, he sought our assistance in improving editing and proofreading his resume. 

In revising his resume, iwritegigs highlighted his soft skills such as his communication skills, ability to negotiate, patience and tactfulness.  In the professional experience part, our team added some skills that are aligned with the position he is applying for.

When he was chosen for the real estate agent position, he sent us this thank you note:

“Kudos to the team for a job well done.  I am sincerely appreciative of the time and effort you gave on my resume.  You did not only help me land the job I had always been dreaming of but you also made me realize how important adding those specific keywords to my resume!  Cheers!

Manush’s story shows the importance of using powerful keywords to his resume in landing the job he wanted.

L5 3D Structure of Proteins Part 1 of 2

Navigation   » List of Schools  »  West Los Angeles College  »  Chemistry  »  Chem 221 – Biochemistry for Science Majors  »  Fall 2021  »  L5 3D Structure of Proteins Part 1 of 2

Need help with your exam preparation?


Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Question #1
Where, in a globular protein, is the amino acid glutamine likely to be located?
A  The hydrophobic exterior
B  The hydrophilic exterior
C  The hydrophobic interior
D  The hydrophilic interior
Question #2
A protein’s primary structure is determined by which of the following?
A  Alpha-helices
B  The hydrophobic effect
C  The linear sequence of specific amino acids
D  Beta-pleated sheets
E  R-group interactions
Question #3
Which of the following best describes the quaternary structure of a protein?
A  The four parts of a protein’s amino acid sequence
B  The layout of alpha-helices and beta-sheets
C  The sequence of nucleic acids
D  A polypeptide chain 3-D structure
E  How the polypeptide chains arrange in space
Question #4
What type of interaction would you expect between the R groups of glutamine and serine in the quaternary structure of a protein?
A  Hydrophobic
B  peptide bonds
C  Ionic
D  hydrogen bonding
Question #5
What type of interaction would occur between glutamic acid and lysine?
A  Hydrophobic
B  Ionic
C  hydrogen bonding
D  disulfide
Question #6
The peptide bond of proteins resembles the bond found in
A  alkynes
B  alkenes
C  hydrocarbons
D  alkanes
Question #7
A peptide bond is
A  a covalent amide bond
B  an ether bond
C  an amide bond
D  a covalent ether bond
E  a covalent bond
Question #8
To hydrolyze a pentapeptide you need
A  3 molecules of water
B  2 molecules of water
C  5 molecules of water
D  4 molecules of water
Question #9
Which proteins are generally water-soluble?
A  Globular proteins
B  Neither globular nor fibrous proteins
C  Fibrous proteins
D  Both globular fibrous proteins
Question #10
Where in a globular protein is the amino acid valine likely to be located?
A  The hydrophilic interior
B  The hydrophobic interior
C  The hydrophobic exterior
D  The hydrophilic exterior
Question #11
A peptide bond is formed by hydrolysis reaction between the carboxyl group of one amino acid and the amino group of another.
A  FALSE
B  TRUE
Question #12
If, in a protein there is a change of an amino acid for another one, for instance a leucine is changed for lysine, the function of the protein most likely
A  will be affected
B  won’t be affected
Question #13
In the peptide Ala-Try-Gly-Phe, the N-terminal amino acid is ________.
A  alanine
B  aspartic acid
C  glycine
D  phenylalanine
E  tryptophan
Question #14
The ability of a particular protein to carry out its function is determined by its overall three-dimensional shape, or conformation.
A  TRUE
B  FALSE
Question #15
The formation of a tetrapeptide.
A  Requires 4 water molecules
B  Requires 3 water molecules
C  Releases 3 water molecules
D  Releases 4 water molecules
Question #16
In a soluble protein that resides in the cytoplasm, where is the majority of the nonpolar amino acids found in its three-dimensional structure?
A  On the surface of the protein
B  Localized to the N-terminus of the protein
C  Randomly interspersed throughout to protein
D  Localized to the C-terminus of the protein
E  Buried in the center of the protein
Question #17
N-terminal and C-terminals may experience the formation of salt bridges
A  TRUE
B  FALSE
Question #18
Uncharged side chains may experience ionic interactions in a protein structure.
A  FALSE
B  TRUE
Question #19
In the peptide Ser-Cys-Glu-Ala, the C-terminal end is ________.
A  glutamic acid
B  alanine
C  glycine
D  cysteine
Question #20
Sickle cell anemia is an example of a genetic disease due to a problem with
A  the secondary structure of a protein
B  the function of all proteins in an organism
C  the primary structure of the hemoglobin protein
D  the primary structure of the myoglobin protein
Question #21
The six atoms of the peptide group lie in a single plane and the configuration around the peptide bond is cis.
A  TRUE
B  FALSE
Question #22
Which of the following statements is true about protein structure?
A  All proteins have a quaternary structure
B  pH does not change the protein conformation
C  A protein’s function depends on its spatial conformation
D  Disulfide bridges primarily maintain secondary structures, as opposed to tertiary
Question #23
What does N-terminus refer to?
A  The first amino acid with the abbreviation ‘N’ in the protein
B  The end of a protein with a free amine group
C  A protein chain
D  The end of a protein with a free carboxylic acid group
Question #24
What accounts for peptide bond planarity within a polypeptide?
A  The fully double bonded peptide bond
B  The peptide bond is not planar, it can actually rotate relatively freely
C  Partial double bond character of the peptide bond
D  Electronegativity differences between nitrogen and carbon
E  Hydrogen bonding between amino acid side chains and water
Question #25
In how many different ways can the amino acids leucine, glutamate, and glycine be arranged?
A  2
B  3
C  6
D  5
E  4
Question #26
Condensation of 3 amino acids
A  requires 2 molecules of water
B  releases 3 molecules of water
C  releases 2 molecules of water
Question #27
Amino acids are connected via __________ bonds, which occur between the carboxyl group of one amino acid and the amino group of another.
A  amino
B  double
C  peptide
D  ionic
E  hydrogen
Question #28
How many water molecules are lost from the condensation of 100 amino acids into a polypeptide?
A  100
B  98
C  101
D  99
E  102
Question #29
The resonance structures that can be drawn for the peptide bond indicate that the peptide bond
A  is weaker than an ordinary single bond.
B  has partial double bond character.
C  still isn’t completely understood by chemists.
Question #30
The peptide bond in proteins is
A  planar, but rotates to three preferred dihedral angles.
B  nonpolar, but rotates to three preferred dihedral angles.
C  not cleavable by hydrolysis.
D  nonpolar, and fixed in a trans conformation
E  planar, and usually found in a trans configuration.
Question #31
A tripeptide has _________
A  3 amino acids and 4 peptide bonds
B  3 amino acids and 1 peptide bond
C  3 amino acids and 2 peptide bonds
D  3 amino acids and 3 peptide bonds
Question #32
Peptide bond is a _________
A  Covalent bond
B  ionic bond
C  Metallic bond
D  Hydrogen bond
Question #33
During the formation of the peptide bond which of the following takes place?
A  Hydrogen atom is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid
B  Hydrogen atom is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid
C  Hydroxyl group is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid
D  Hydroxyl group is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid
Question #34
At physiological pH, the N-terminal and C-terminal residues can form salt bridges.
A  TRUE
B  FALSE
Question #35
Sickle cell anemia is an important example of conservative mutation.
A  FALSE
B  TRUE
Question #36
Membrane proteins characteristically have a larger number of hydrophilic amino acids than cytosolic proteins.
A  TRUE
B  FALSE
Question #37
Proteins channels within membranes, have hydrophobic amino acid side chains oriented outward.
A  FALSE
B  TRUE
Question #38
The sequence of amino acids in a protein is listed from the C-terminus to the N-terminus.
A  FALSE
B  TRUE
Question #39
The linear arrangement of amino acids in a protein is called primary structure
A  FALSE
B  TRUE
Question #40
Gobular proteins
A  have their hydrophilic side chains are on the outside, exposed to the solvent, water.
B  have their hydrophobic amino acid side chains are in the interior of the molecule
C  All of these are correct
D  are roughly spherical in shape
E  are water soluble
Play Video

“Many thanks for the killer business plan we worked on.  You guys are angels sent to me.  Congratulations to the team for a job well done. I hope you help more entrepreneurs like me grow their businesses.  I will surely bring some clients your way!”

Christian S.
SaaS Business Founder

“Thanks for all your help in bringing my website back to life. You are life savers.  With your help, I now have a more thorough understanding of my target audience.  I wish I had met your earlier, I could have saved tons of work hours.”

Tyra
Blogger

“We can never be thankful enough iwritegigs.com for helping us with our business.  We have been hesitating for years hiring a professional writer thinking it was only an extra cost to our business.  It has been a pleasure working with you.” 

Linda
Start Up Founder

“Kudos to the team for a job well done.  I am sincerely appreciative of the time and effort you gave on my resume.  You did not only help me land the job I had always been dreaming of but you also made me realize how important adding those specific keywords to my resume!  Cheers!

Manush
Fresh Graduate
We accept payment

Terms of Service
Copyright © 2021 iWriteGigs
ElitePro Writing Business Solutions LLC

30 N Gould St Ste R, Sheridan, WY 82801 

Call Us at 1-(323) 410-1787
Send us sms at 1-(323) 410-1787

17 Mabini St. Barangay San Diego Zone 2 Tayabas City, Philippines