Bohr - Study guides, Class notes & Summaries
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LASERS CERTIFICATION EXAM 2024 WITH 100% CORRECT ANSWERS
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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...
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DAT UPDATED Exam Questions and CORRECT Answers
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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...
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Honors Chemistry Scientists Latest Update Graded A+
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Honors Chemistry Scientists Latest 
 
Update Graded A+ 
 
Who is known for the discovery of the electron and his work with the cathode ray tube? 
 J.J. Thomson 
 
Who developed the periodic table and organized elements by their atomic mass? 
 Dmitri Mendeleev 
 
Who is credited with the creation of the first model of the atom with a positively charged nucleus 
surrounded by electrons? 
 Ernest Rutherford 
 
Who proposed the quantum mechanical model of the atom and introduced the concept of 
orbi...
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MileDown MCAT Biology Questions and Answers | Latest Update | 2024/2025 | 100% Verified
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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...
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CHM 1045 Unit 1 Exam - Dillon Questions and Answers 100% Solved correctly
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___ 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...
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Introduction to Quantum Mechanics Graded A+
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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 ____________ _...
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Biology Major Field Test Study Set with Complete Solutions (Already Graded A+)
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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...
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AQA AS Physical Chemistry 2024 exam questions with 100% correct answers
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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...
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WGU Biochemistry OA Questions And Answers WITH VERIFIED SOLUTIONS GRADED A+ 2023 UPDATE
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WGU Biochemistry OA Questions And Answers WITH 
VERIFIED SOLUTIONS GRADED A+ 
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
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BioChem C785 - WGU - Module 3 Questions and answers already graded A+| Updated & Verified | 2024
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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...
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