Van der waals interaction - Study guides, Class notes & Summaries

The dipole moment in a water molecule Which statement about hydrogen bonds is NOT true? A) Hydrogen bonds account for the anomalously high boiling point of water. B) In liquid water, the average water molecule forms hydrogen bonds with three to four other water molecules. C) Individual hydrogen bonds are much weaker than covalent bonds. D) Individual hydrogen bonds in liquid water exist for many seconds and sometimes for minutes. E) The strength of a hydrogen bond depends on the linearit...

Electronegativity is larger/smaller with a greater number of electron shells. - correct answer smaller Electronegativity is larger/smaller with a greater proton number in a given period (horizontal row). - correct answer larger What is wrong, if anything, with the following statement: "When NaCl is dissolved in water, the water molecules closest to the ions will tend to preferentially orient themselves so that their oxygen atoms can interact electrostatically with the chloride ions...

Gene expression the process by which information encoded in DNA directs the synthesis of proteins or; in some case, RNAs that are not translated into proteins and instead functions as RNAs Ionic bonds Bonds that require donating and accepting electrons Emergent properties Properties of a complex system that are not present within its parts but that emerge only when those parts are combined. Natural selection A process in which individuals that have certain inherited traits tend to survive...

Helix Prep Exam I Questions & Answers 2024/2025 C - ANSWERSWhat did Watson and Crick suggest to be significant about the base pairing found in the helix? A) It allowed the DNA to twist in a helix. B) The DNA could be circular. C) It was a mechanism for copying. D) All of the above. E) None of the above. D - ANSWERSWhich one of the following is not a required element in (known) organisms? A) Carbon B) Molybdenum C) Iodine D) Scandium E) Selenium A - ANSWERSA typical van der W...

types of lipids (purpose) correct answer: storage, structural, and signalling fatty acid chemical structure and charge correct answer: - fatty part is the carbon chain - acid part is carboxyl group (-COOH) - negatively charged which conformations of saturated fatty acids are most stable? correct answer: - anti conformation - extended conformation unsaturated fatty acids correct answer: double bonds are almost always in cis conformation which results in kinks in structure mono-...

UWorld MCAT QBank Questions Missed Exam Questions And Answers Paramagnetic - answerUnpaired electrons in the electronic configuration of an atom or ion, which end up interacting with each other in a magnetic field Diamagnetic - answerPaired electrons in the electronic configuration of an atom or ion, which will NOT interact with each other in a magnetic field Electron capture - answerAn alternative form of positron emission (B^+ decay) Reactivity of forming Ionic Bonds - answerThis increases as ...

1. When two atoms are equally electronegative, they might interact directly to form A. equal numbers of isotopes. B. ions. C. polar covalent bonds. D. non- polar covalent bonds. E. hydrogen bonds. - D 2. Which of the following is not considered to be a weak molecular interaction? A. van der Waals interaction B. ionic bond in the presence of water C. hydrogen bond D. covalent bond - D 3. Which type of interaction stabilizes the alpha-helical structure of proteins? A. hydrophobic i...

TEST BANK: LEHNINGER PRINCIPLES OF BIOCHEMISTRY, 7TH EDITION, DAVID L. NELSON CHAPTERS 1-28 EXAM QUESTIONS AND COMPLETE 100% CORRECT VERIFIED ANSWERS WITH RATIONALES WELL EXPLAINED BY EXPERTS AND GRADED A+ LATEST UPDATE 2024 WITH 100% GUARANTEED SUCCESS AFTER DOWNLOAD .ALREADY PASSED!!!!!!9ALL YOU NEED TO PASS YOUR EXAMS) Which list has the cellular components arranged in order of INCREASING size? amino acid < protein < mitochondrion < ribosome amino acid < protein < rib...

A pair of shared valence electrons is referred to as a(n): a. covalent bond b. hydrophobic effect c. van der Waals interaction d. ionic bond correct answer: a. covalent bond For an atom that is NOT an ion, which of the following must be TRUE? a. the number of electrons equals the number of protons b. the number of protons equals the number of neutrons c. the number of electrons equals the number of neutrons correct answer: a. the number of electrons equals the number of protons As...

The partial negative charge at one end of a water molecule is attracted to the patrial positive charge of another water molecule. What is this attraction called? a. a hydrogen bond b. a covalent bond c. an ionic bond d. a van der Waals interaction Sodium ions (Na+) are __________ to cross a pure phospholipid bilayer because they are _________. a. able, nonpolar b. unable, charged c. able, charger d. unable, nonpolar - ANSWER b - ANSWER a A solution with a pH of 5 has __________...