Bohr Guías de estudio, Notas de estudios & Resúmenes

MULTIPLE CHOICE 1. The term “atom” was first used by the ___________. a. Ethiopians b. British c. Greeks d. Romans ANS: C The term “atom” was first used by the Greeks DIF: Moderate REF: p. 27 OBJ: Relate the history of the term “atom.” 2. The first person to describe an element as being composed of identical atoms was __________. a. J. J. Thomson b. John Dalton c. Dmitri Mendeleev d. Niels Bohr ANS: B The first person to describe an ele...

Bohr's Atom Model Calculations

1. Record: Click Fire. The lamp emits photons of 1 eV, 2 eV, and so on up to 20 eV. The EL Photon Detector Display shows the photons that pass directly through the gas. Any missing photons were absorbed by the gas before being reemitted at various angles. Which photon energies were absorbed by Gas A? 2. Observe: Select the Laser on the left and the ORBITALS tab on the right. Set the Energy (eV) to 4 eV. The atom model at right, called the Bohr model, shows the nucleus of the atom as a purp...

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...

Blood from the UE >> ______. Blood from the LE >> ______. Blood from the lumbars >> _____ >> _______. - Answer- SVC, IVC, azygous vein, SVC 80% of blood __________ to the right ventricle. The remaining 20% needs _______ to flow to the RV. - Answer- Passively flows (via gravity) Atrial contraction Impulse for atrial contraction starts at the ________ in the ___________ of the right atria. Atrial contraction = ____ wave. After this wave, the ________ valves close. ...

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, ...

Bohr Effect chart (low pH) Ans - C- High CO2 H- High H+ A- Acidic R-Release of O2(rt. Shift) T- tense state (in tissues) Primary structure Ans - Sequence of amino acids that make up a protein Secondary Structure Ans - Sequence of amino acids fold. Tertiary Structure Ans - -more folding in a 3D shape. -R groups (side chains) Quaternary Structure Ans - Protein has more than 1 polypeptide chain. Chemical reaction Ans - -absorb and release energy -activation energy -energy is released (h...

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 energy -activation energy -energy is released (heat & light) when bonds are broken

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...

Bohr's model of the atom : Niels Bohr's description of electron arrangement in discrete energy levels. Energy transition : Electron movement between energy levels in an atom, emitting or absorbing energy. Excited state : State where an electron is at a higher energy level than the ground state. Ground state : Lowest energy level an electron can occupy in an atom. Photon : Quantum of electromagnetic radiation with energy related to frequency. 2 | P a g e Delta E : Energy differen...