Bohr - Study guides, Class notes & Summaries

Theorized the concept of stimulated emission - correct answer Einstein Theorized that an excited electron will spontaneously return to its ground state - correct answer Bohr First ruby laser was created in _____ by ______. - correct answer 1960, Ted Maiman _________ reported in 1965 that a ruby laser could vaporize enamel. - correct answer Stern and Sognnaes First pulsed Nd:YAG laser released in ______ and cuts ______ tissue. - correct answer 1990, soft tissue In _____ t...

DAT General Chemistry Exam |170|questions with complete solution Atomic Number ANS-number of protons found in that atom; low number; (Z) Mass Number ANS-Protons + Neutrons; high number; (A) Atomic Mass ANS-relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 1 amu = ANS-1.66x10^-24 Atomic Weight ANS-weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, ...

MileDown MCAT Biology Questions and Answers | Latest Update | 2024/2025 | 100% Verified What is the role of the myelin sheath in neural transmission? The myelin sheath insulates axons, allowing for faster transmission of electrical impulses along the neuron through saltatory conduction. Describe the process of endocytosis in cellular transport. Endocytosis is a process where the cell membrane engulfs extracellular material, forming a vesicle that brings the material into the ce...

WGU Biochemistry OA (Latest 2022/2023) Verified Answers Bohr Effect chart (low pH) C- High CO2 H- High H+ A- Acidic R-Release of O2(rt. Shift) T- tense state (in tissues) Primary structure Sequence of amino acids that make up a protein Secondary Structure Sequence of amino acids fold. Tertiary Structure -more folding in a 3D shape. -R groups (side chains) Quaternary Structure Protein has more than 1 polypeptide chain. Chemical reaction -absorb and release en...

Hemoglobin O₂ binding affinity decreases under what conditions: - Bohr Effect Low pH (High CO₂ and high H⁺)=> oxygen loads released by hemoglobin if do opposite (decrease CO₂ or H⁺)=> increase affinity for oxygen Haldane Effect - if you increase the pressure of CO₂=> increase CO₂ content in blood. * oxygenation of blood in the lungs displaces CO₂ from hemoglobin=> increase CO₂ removal *Hemoglobin without O₂ acts as blood buffer by accepting H⁺... this will...

Introduction to Quantum Mechanics Graded A+ Back to Bohr: Bohr gave us Quantization Quantization means electrons can only exist in certain discrete energy levels (like a staircase, they can only completely be on the first or second stair but never in between stairs different distances from ground) If you recall rings= orbits e- must be in a _______ and e- are different distances(or E) from ________ orbit; nucleus Bohr was Bad: Bohr model of the atom could predict the ____________ _...

Biology Major Field Test Study Set with Complete Solutions (Already Graded A+) RFLP - Answer restriction fragment length polymorphisms; diff in length of fragments made by restriction enz digestion of 2 DNA samples ruminants - Answer variations in: enlarged multichambered stomachs; length of alimentary canal; shape of teeth trachae - Answer resp tubules that make up anthropod resp sys. open to outside through spiracles cloaca - Answer opening found at tail end of reptiles used fo...

___ are forms of matter - Substances ____ _____ provides information about percentages of different isotopes of each element - Mass spectrometer ____ + ____ are polar covalent molecules that dissociate into ions when introduced to water - Acids, bases _____ charge = # of protons > # electrons - positive _____ in an experiment are all the factors that the experimenter attempts to keep the same - Constant ______ charge = # protons < # electrons - negative "-ate" ending means - mor...

AQA AS Physical Chemistry 2024 exam questions with 100% correct answers Who described atoms as solid spheres that make up different elements and when? - ANSWERS John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWERS John Dalton in 1803 Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New m...

Hb (hemoglobin) binds to CO (carbon monoxide) with a higher affinity than oxygen and stabilizes the R (relaxed) state - True When hemoglobin changes from the T to the R, it has a high affinity for oxygen - True When hemoglobin changes from the R to T, it has a low affinity for oxygen - True Cooperatively refers to - structural changes that increases the affinity for oxygen in hemoglobin When the oxygen concentration is high, the heme shape is planar. When the oxygen concentration is low, t...