In an alpha helix Study guides, Class notes & Summaries

Which of the following amino acid would not be commonly found in the middle of a an α-helical domain? - correct answer Proline. It is considered a 'helix breaker' and would not be found in an alpha helix; all other residues are nonpolar hydrophobic and could reside in a transmemebrane domain. Changes in the physiological variables listed below can alter the affinity of hemoglobin for oxygen. Which of the following will lower the affinity of hemoglobin for oxygen? a) decrease in proto...

Ultimate AP Biology Exam Review Questions with Verified Answers Compare and contrast transpiration and translocation. What is the difference between xylem and phloem? Tranpspiration is the loss of water vapor from the surgace of a plant through the stomata. Translocation is the channeling of the sugar through the phloem. Define hypoosmotic, hyperosmotic, and isomotic 1. Has a lower concentration of solutes than its surrounding enviorment 2. Has a higher concentration of solutes than i...

The right-handed alpha helix - Answer - An example of secondary structure; the alpha helix found in proteins is RIGHT-HANDED; spirals upwards in the counterclockwise direction About the alpha helix - Answer - AA side chains and H atoms on each alpha carbon project out from the axis; no noticeable hole in the middle because of atomic radii - intramolecular H bonds connect the carbonyl C of one aa residue to the peptide H in the 4th residue - H-bond are nearly parallel to the axis of the hel...

1. When a protein is ingested & encounters the acidity of the stomach (pH 1.0), its tertiary structure will be disrupted. A non covalent interaction that will be broken will be salt bridges within the protein because the _______ group (pKa 3.5) will become protonated. This will result in an excess of ______ charges on the protein and the electro-repulsion will further disrupt structure. A) Amino; Negative B) Amino; Positive C) Carboxyl; Negative D) Carboxyl; Positive correct answer: D) Ca...

AP Biology- Biochemistry Latest Update 100% Correct adhesion attraction between different kinds of molecules alkaline synonym for basic allosteric inhibition two active sites, one for a substrate and one for an inhibitor alpha helix secondary structure form of a protein; human hair (keratin) amine nitrogen bonded to two hydrogens and to the carbon skeleton amylopectin more complex storage polysaccharide form of starch amylose simplest storage polysaccharide form of starch...

WGU C785 BIOCHEMISTRY EXAM [QUESTIONS AND ANSWERS] [GRADEDC A 2023/2024] What is the basic structure of an amino acid? What do they look like? - CORRECT ANSWER amino group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon (C), and variable group How do you identify the 3 different types of side chains: non-polar/hydrophobic, polar, and charged? - CORRECT ANSWER Non-polar/hydrophobic - end with CH or "can't have" water. Polar - end with OH, SH, or NH. Charged - end with a ...

hypothesis correct answer: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. predictions correct answer: specific statements that can be directly and unequivocally tested (formed from hypothesis) theory correct answer: collection of related hypothesis that have been thoroughly tested into broad explanations (ex: cell theory, evolution, gravity) scientific model correct answer: a representation of an object or e...

ASU BIO 181 EXAM 1 QUESTIONS AND ANSWERS ALREADY PASSED A cancer cell will be anchorage-dependent for growth and immortal. FALSE A cell that is anchorage-dependent for growth will also exhibit contact inhibition. TRUE A cell that is itself an organism must have a minimum of four needs presented in lecture. List these four things. Find food, find shelter, find a mate, and reproduce A normal cell is ____________and _________________for growth. Mortal Anchorage-dependant A norma...

Nucleic acids stain with ______ dyes which impart a ________ color. Therefore, nucleic acids are described as ______. A. Base-like; blue/purple; acidophilic B. Acid-like; red/pink/orange; basophilic C. Base-like; blue/purple; basophilic D. Acid-like; red/pink/orange; acidophilic - Answer-C. Base-like; blue/purple; basophilic Which molecules are lost from cells during the processing for H&E staining? a. Carbohydrates b. Proteins c. Lipids d. Nothing is lost - Answer-c. Lipids A slide-m...

The Structure of Amino Acids correct answers Amino group, carboxyl group, and R group attached to alpha carbon What is the carbon attached to the amino group, carboxyl group, and R group? correct answers Alpha carbon What are the carbons after the alpha carbon? (in the correct order away from the alpha) correct answers Beta, gamma, delta What is the pI? correct answers Isoelectric point of the Amino Acid titration curve What is the point of the Amino Acid curve? correct answers To ta...