Cooperativity - Study guides, Class notes & Summaries

A - Alanine (1 letter) Activation of enzymes through ligand binding: why would this be useful? - The binding of a ligand to an allosteric site of a multimeric enzyme often induces positive cooperativity, that is the binding of one substrate induces a favorable conformation change and increases the enzyme's likelihood to bind to a second substrate. Ala - Alanine (3 letter) Arg - Arginine (3 letter) Asn - Asparagine (3 letter) Asp - Aspartic Acid (3 letter) Barr body and relation to heter...

ACS Biochemistry Exam Questions and Correct Solutions 2024 Describe the structural changes in hemoglobin that allow for cooperative binding of O2 - Answer - Binding of O2 in one subunit causes a conformational change in an adjacent subunit allowing O2 to bind Which amino acids in "a" would be charged at pH 7? - Answer -Asp, Glu, Arg, His, Lys Which amino acids are negatively charged? - Answer -Asp, Glu which amino acids are positively charged? - Answer -Arg, His, Lys How are beta sheets s...

A Hill coefficient (nH) of 2 indicates that: A) there is positive cooperativity in ligand binding. B) there are two ligand-binding sites. C) there is negative cooperativity in ligand binding. D) there is positive cooperativity in ligand binding and there are two ligand-binding sites. E) there is negative cooperativity in ligand binding and there are two ligand-binding sites. - A) there is positive cooperativity in ligand binding. A monoclonal antibody differs from a polyclonal antibody in...

You're using anion exchange chromatography to purify a small globular protein. After passing the mixture through the column, you find that your protein did not "stick" to the resin and flowed right through. What is a plausible reason for this to have occurred? Correct Answer-The pH of the solution is close to the isoelectric point. Oxygen binding that affects the cooperatively of hemoglobin is an example of heterotrophic regulation. Correct Answer-False You have determined that a leucin...

E1: Why do proteins fold? - Answer A and B are correct (It is entropically favorable for water & It is enthalpically favorable for the protein) E1: The structural changes in hemoglobin that contribute toward its positive cooperativity for oxygen consist of: - Answer All of the above ( movement of iron into the plane of the heme & movement of a neighboring veiling residue due to strain from changes in the heme & the breaking of a covalent bond with the regulatory molecule BPG

FTCE Biology Practice Exam Questions with 100% Correct Answers During which phase of mitosis do tetrads form? a) prophase I b) prophase II c) metaphase I d) metaphase II - Correct Answer ️️ -a) prophase I The result of meiosis and cytokinesis is: a) two haploid (1n) cells b) four haploid (1n) cells c) two diploid (2n) cells d) four diploid (2n) cells - Correct Answer ️️ -b) four haploid (1n) cells What is the complementary sequence to this segment of DNA: 5' CGTTAGGAATAC 3...

Microfilament assembly is directional, in that there is a defined (-) and (+) end Correct Answer-A) True Cooperativity or allostery relates to Correct Answer-D) Quaternary strucuture How does the hydrophobic effect influence the structures of large molecules? Correct Answer-D) A and B a- nonpolar groups are not easily solubilized in water and aggregate b- polar groups are oriented on the surface, interacting with the water An exergonic process is spontaneous Correct Answer-A) True ...

Prophase I (Meiosis) CORRECT ANSWER During which phase of meiosis do tetrads form? 4 haploid cells CORRECT ANSWER What is the end result of meiosis and Cytokinesis? The first step in gene expression CORRECT ANSWER Transcription of DNA into a molecule of mRNA At the G2 checkpoint, damaged DNA that cannot be fixed will initiate a cellular, self-destruct process called: CORRECT ANSWER Apoptosis The activity of an ezyme could be regulated by: CORRECT ANSWER Feedback Inhibition Positive ...

FTCE Biology Practice Exam Questions with 100% Correct Answers During which phase of mitosis do tetrads form? a) prophase I b) prophase II c) metaphase I d) metaphase II - Correct Answer ️️ -a) prophase I The result of meiosis and cytokinesis is: a) two haploid (1n) cells b) four haploid (1n) cells c) two diploid (2n) cells d) four diploid (2n) cells - Correct Answer ️️ -b) four haploid (1n) cells What is the complementary sequence to this segment of DNA: 5' CGTTAGGAATAC 3...

Ways of regulating enzymes - ANSWER-allosteric effector competitive inhibition noncompetitive inhibition cooperativity Competitive inhibition - ANSWER-substance the enzyme by occupying the active site Noncompetitive inhibition - ANSWER-substance inhibits the enzyme by binding to a location other than the active site and changes the shape of the enzyme Cooperativity - ANSWER-enzyme becomes more receptive to additional substrates Ribosomes are manufactures in the... - ANSWER-nucleus...