Atomic mass unit - Study guides, Class notes & Summaries
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MCAT entrance exam all subjects combined questions & answers latest update
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m 
 
 
 
 
 
 
1.	Which of the following is the mRNA start codon in most cases? 
 
A.	UAA	B. AGU	C. AUG	D. UGA 
 
 
 
2.	Which of the types of RNA is the smallest? 
 
A.	mRNA	B. tRNA	C. rRNA	D. 
 
 
 
3.	Which of the following is not considered a pyrimidine? 
 
A.	C	B. T	C. U	D. G 
 
 
 
4.	Which of the following is paired correctly? 
 
A.	A-G	B. C-G	C. A-U	D. G-T 
 
 
 
5.	Which of the following characterizes a Western blot? 
 
A.	Antibody/protein hybridization	B. DNA/RNA combination	C. RNA ...
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CHEM 101 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) ALREADY GRADED A+ NEWEST VERSION
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CHEM 101 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) ALREADY GRADED A+ NEWEST VERSION 
 
If a compound's chemical formula was experimentally determined to be 18, the chemical formula could be: 
CH4 
NH3 
H2O 
PCl5 - Answer H2O 
Use the periodic table to get the atomic masses of each element. Then you can calculate the formula mass as such: 
H=1.008×2=2.016 
O=15.999×1=15.999 
Adding these together we get 18.015, which is approximately 18. 
 
The sum...
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BIOL 1201: Exam 1 Questions and Answers Graded A+
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BIOL 1201: Exam 1 Questions and 
 
Answers Graded A+ 
 
A substance that cannot be broken down into other substances by ordinary chemical procedures 
is a(n) _____. element 
 
Organisms are largely composed of __ elements. 11 
 
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 
elements make up approximately 96% of living matter? carbon, hydrogen, nitrogen, and 
oxygen 
 
What determines solubility? "like dissolves like" 
 
Atom Smallest unit of mat...
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Stern's Introductory Plant Biology 14th Edition James Bidlack - Test Bank
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Stern's Introductory Plant Biology, 14e (Bidlack) Chapter 1 What Is Plant Biology? 
1) The early scientist who first demonstrated experimentally that plants do not have the same modes of nutrition as animals was 
A) Nehemiah Grew. 
B) Carl Willdenow. 
C) Alexander von Humboldt. D) Sir J. D. Hooker. 
E) J. B. van Helmont. 
Answer: E 
Topic: Diversification of Plant Study 
Bloom's: 1. Remember 
Learning Outcome: 01.04 List the aspects of botany with which each of the major botanical disciplines ...
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BIOL 1201: Exam 1 Questions With 100% Correct Answers
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BIOL 1201: Exam 1 Questions With 100% Correct Answers 
A substance that cannot be broken down into other substances by ordinary chemical procedures is a(n) _____. 
element 
 
 
Organisms are largely composed of __ elements. 
11 
 
 
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living matter? 
carbon, hydrogen, nitrogen, and oxygen 
 
 
What determines solubility? 
"like dissolves like" 
 
 
Atom 
Smallest un...
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Test Bank on Essentials of Dental Radiography 9th Edition By Evelyn Thomson, Orlen Johnson
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Test Bank on Essentials of Dental Radiography 9th Edition By Evelyn Thomson,Orlen Johnson 
Table of Contents Chapter 1 ....................................................................................................................................... 2 Chapter 2 ....................................................................................................................................... 9 Chapter 3 ........................................................................................
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BIOL 1201: Exam 1 Questions And Answers!!
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A substance that cannot be broken down into other substances by ordinary chemical procedures is 
a(n) _____. - Answer-element 
Organisms are largely composed of __ elements. - Answer-11 
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 
elements make up approximately 96% of living matter? - Answer-carbon, hydrogen, nitrogen, and 
oxygen 
What determines solubility? - Answer-"like dissolves like" 
Atom - Answer-Smallest unit of matter that retains al...
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GACE Special Education Math and Science Rated A+
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GACE Special Education Math and 
 
Science Rated A+ 
 
Anion A negatively charged ion. It is formed by adding electrons to atoms or molecules. 
 
Cation A positively charged ion that is formed by removal of electrons from atoms or 
molecules. 
 
Ionic Crystal A crystal that is made up of two or more elements. The positive and negative 
ions are arranged in a definitive pattern. They are held together by electrostatic attraction. Some 
examples include sodium chloride and cesium chloride. 
 
Latt...
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Student Exploration: Moles GIZMO ( ALL ANSWERS CORRECT )
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Student Exploration: Moles 
Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, 
molar mass, molecular mass, scientific notation, significant figures, unified atomic mass unit 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
1. In the image to the right, note a dozen eggs, a dozen donuts and 
a dozen roses. How many of each item do you have? 
2. Would a dozen of each object have the same mass? 
3. Suppose you have a dozen carbon atoms, a dozen...
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AP Biology Exam Review Questions and Answers
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AP Biology Exam Review Questions and Answers 
Matter 
anything that takes up space and has mass 
 
 
Element 
A substance that cannot be broken down into simpler substances 
 
 
Compound 
A substance made up of atoms of two or more different elements joined by chemical bonds 
 
 
Molecule 
two or more atoms held together by covalent bonds 
 
 
Trace elements 
An element indispensable for life but required in extremely minute amounts. 
 
 
Atom 
Basic unit of matter 
 
 
Neutron 
A subatomic par...
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