Alpha helices - Study guides, Class notes & Summaries

ACS Biochemistry final EXAM QUESTIONS AND CORRECT DETAILED ANSWERS | EVERYTHING YOU NEED TO PASS EXAM Antiparallel - ANSWER-Which type of B sheet is more stable? right-handed alpha helices - ANSWER-Alpha-keratin made up of

What are the four levels of protein structure? - Answer-primary, secondary, tertiary, quaternary primary structure - Answer-The first level of protein structure; the specific sequence of amino acids making up a polypeptide chain. secondary structure - Answer-The second level of protein structure; the regular local patterns of coils or folds of a polypeptide chain. tertiary structure - Answer-The third level of protein structure; the overall, three-dimensional shape of a polypeptide due ...

Bioinformatics Final Exam || Complete Questions & 100% Accurate Solutions Bioinformatics Final Exam || Complete Questions & 100% Accurate Solutions Bioinformatics - ANSWER - The technology that uses computers for storage, retrieval, manipulation and distribution of information related to biological macromolecules. (DNA, RNA, proteins, metabolites, lipids.) Who is the mother of bioinformatics? - ANSWER - Margaret Dayhoff What are the three main areas of bioinformatics? - ANSWER - - Mole...

Protein structure (primary) - Answer - Linear sequence of amino acids with the absence of R group interactions, connected by strong peptide bonds (require strong acids/bases, heat, and/or enzymes to bond) which have partial double bond character due to resonance, almost always in a trans conformation - Once the bond is formed, the carbonyl and amino groups are uncharged and cannot ionize, so the only charged groups are the N-terminus, C-terminus, and R groups of ionizable side chains Prot...

Entrance Exam Semmelweis 2024/2025 Questions with Complete Solutions Electron configuration for cations - Correct Answer Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions - Correct Answer Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals - Correct Answer s, p, d, f Primary vs secondary structures of proteins - Correct Answer Primary - AA chain (linked by peptide bonds) Secondary -...

Reactions that add a phosphate to specific sites on proteins in an ATP dependent manner are important in cell signaling. The type of enzyme that catalyzes this reaction is: - ️️a protein kinase What secondary structure found in proteins is often used to enable it to cross a membrane? - ️️alpha helices An inhibitory acetylcholine receptor would - ️️be a K+ channel The nonpolar part of a phospholipids consists of - ️️fatty acid chains Which of the following is true concernin...

Many types of non-covalent interactions are electrostatic in nature; one notable exception is A) Hydrogen bond C) Ionic interaction B) Van der Waals interaction D) Hydrophobic interaction - Answer-D 2. Maintaining correct pH is very important for living systems. Which of the following molecules is important for pH control in living systems? A) Proteins, especially those with high content of histidine residues B) Dihydrogen phosphate and hydrogen phosphate C) Bicarbonate D) All of t...

If a thin lens with an index of 1.5 has a dioptric power of +4.00 in air, what is its power if placed in water? A) +1.18 diopters B) +11.76 diopters C) +1.36 diopters D) +4.00 diopters - correct answer C) +1.36 diopters Alpha helices and beta sheets are considered which level of protein structure? A) Quaternary B) Primary C) Tertiary D) Secondary - correct answer D) Secondary An amphipathic molecule will react in what manner when exposed to water? A) It will completely ...

Semmelweis Entrance Exam Questions and Answers Already Passed Electron configuration for cations Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals s, p, d, f Primary vs secondary structures of proteins Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) Mo...

BCH210 TEST QUESTIONS WITH ALL CORRECT ANSWERS structure of ribonuclease a - Answer-segments of both beta sheets and alpha helices, 4 disulfide bonds which AA plays a key role in stabilizing the heme iron/group in the structure of myoglobin - Answer-histidine components of phosphatidylcholine molecule - Answer-glycerol, phosphate, head group, acyl chains bacteriorhopsin - Answer-membrane protein derived from bacteria, acts as a light receptor, for every photon, you pump out one proton...