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biology of cell study guide for chapter 4

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by: Lilian Notetaker

biology of cell study guide for chapter 4 BIO 2013 - 001

Marketplace > Arkansas State University > Biology > BIO 2013 - 001 > biology of cell study guide for chapter 4
Lilian Notetaker

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About this Document

This material are sample questions that I came up with as I studied. it will help you study better and be prepared.
Guolei Zhou (P)
Study Guide
50 ?




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"Yes please! Looking forward to the next set!"
Miss Al Kerluke


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This 4 page Study Guide was uploaded by Lilian Notetaker on Sunday March 6, 2016. The Study Guide belongs to BIO 2013 - 001 at Arkansas State University taught by Guolei Zhou (P) in Fall 2015. Since its upload, it has received 163 views. For similar materials see BIOLOGY OF THE CELL in Biology at Arkansas State University.


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-Miss Al Kerluke


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Date Created: 03/06/16
STUDY GUIDE FOR CHAPTER 4 1) Protein’s shapes (conformation) are determined by __________; which structure? 2) ____are special proteins that help proteins fold into their proper conformation? 3) Proteins that are made up of more than 2 subunits belong to which structure? 4) What type of bond exists between individual polypeptide chains? Which degree or structure does this fall under? 5) A subunit is each polypeptide chain of a large protein? T/F 6) Which of the following is the truth about dimers? a) It can be only from the same unit b) It can be from the same or different units c) It can only be from different units d) None of the above 7) ______ is a region where proteins interact with one another through non- covalent bonds? 8) A dimer is made up of _____ subunits. 9) A tetramer is made up of _____subunits 10) Hemoglobin is made up of ____subunits that contain a _____group. 11) To stabilize cross-links, _____bonds form between adjacent _______groups. 12) ______is the basic structural unit of a protein that can independently fold into a stable structure? 13) Proteins can have only 1 domain. T/F? 14) Denaturation is the process of protein refolding into its original conformation. T/F? 15) (SDS) Sodium Dodecyl Sulfate permanently denatures proteins. T/F? 16) Once a protein has been denatured, it cannot be renatured. T/F? 17) Proteins usually have only one useful conformation. T/F? 18) ______has similar amino sequence, 3 D structure, and similar functions. 19) ______is the molecule that a protein can bind to by _____bonds? 20) Antigens are made in response to a foreign molecule. T/F? 21) _____ are Y-shaped molecules? 22) The side chains are part of the polypeptide backbone. T/F? 23) _______is usually in proteins that span a membrane? 24) Sheets that run parallel have _______ loops than sheets that run antiparallel. a) Longer b) Shorter c) Equal d) Minute 25) Proteins always fold in the lowest free energy possible. T/F? 26) Loops of polypeptide end form binding site to where the antigens bind to. T/F? 27) Antibodies are highly specific. T/F? 28) _________binds to particular substrates, and convert them into chemically changed products. 29) Phosphates catalyze the addition of phosphate groups to molecules. T/F? 30) ____________catalyzes polymerization reaction such as the synthesis of RNA and DNA? 31) _________ breaks down nucleic acids by hydrolyzing peptide bonds between amino acids? 32) Protein phosphorylation regulates many eukaryotic cell functions by turning proteins on and off. T/F? 33) All 20 amino acids can be phosphorylated. T/F? 34) Which of the following are right about domains? a) They can only be composed of Beta sheets b) They can be composed of both Beta and Alpha sheets. c) The can only be composed of Alpha sheets d) None of the above is true. 35) Binding with GTP will activate proteins. T/F? 36) Signaling of proteins after adding GTP will always be on. T/F? 37) Proteins are linked by covalent and non-covalent bonds. T/F? 38) _____are non-protein molecules that enhance protein function? a) Molecular chaperone b) Enzymes c) Prosthetic groups. d) Allosteric proteins. 39) In feedback inhibition, the end product of the pathway regulates enzymes early in the pathway. T/F? 40) ________is the addition of phosphate group to proteins? ANSWERS 1) The sequence of amino acids, Quaternary structure 2) Molecular chaperones 3) Quaternary structure 4) Non-covalent; 4° 5) True 6) B 7) Binding site 8) 2 9) 4 10) 4; heme 11) Disulfide; cysteine 12) Domain 13) False (they can have 1 or a few depending on their size) 14) False 15) True 16) False (except under dire conditions) 17) true 18) protein families 19) ligand; non- covalent 20) false (antigens are the foreign molecules; right answer: antibodies) 21) antibodies 22) false (the side chains or R- group are not) 23) helix 24) longer 25) true 26) true 27) true 28) enzymes 29) false (phosphates catalyzes the removal of phosphate bond; right answer : kinase) 30) polymerase 31) nuclease 32) true 33) false (only 3 can be phosphorylated. They are Serine, Tyrosine, Threonine) 34) b 35) true 36) false ( it will be on and off) 37) false (non-covalent bonds) 38) c 39) true 40) phosphorylation GOODLUCK!!! I HOPE THIS HELPS. I WILL SEND STUDY GUIDE QUESTIONS I MADE UP AS I READ FOR CHAPTER 5 & 6.


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