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LQB182 FINAL QUESTIONS WITH COMPLETE SOLUTIONS
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34

juni 2023

2022/2023

A+
What are the bonds that hold elements together? From strongest to weakest. correct answer: - Covalent bond - Ionic Bond - Hydrogen Bond - Van Der Waal's forces What is one of the main functions of Cysteine as an amino acid? correct answer: Formation of Di-sulphide bridges What are the 4 levels of Protein structure? Give explanation/examples of each. correct answer: 1. Primary - Simply the unique sequence of amino acids making up the single, linear chain of a polypeptide 2. Seco...
Classroom
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LQB182 Exam:( Only this content will be on the multiple choice)2022/2023
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50

november 2022

2022/2023

A+
Storage of DNA info -in the sequence of bases -5' to 3' -chromosomes= 51 million to 245 million base pairs -information in DNA used for replication of chromosomes, production of proteins and regulation -average gene = 1400 bp The central dogma replication DNA → RNA → protein (transcription and translation replication only occurs when the cell needs to divide, not when it needs to encode a message Nucleus: replication, transcription Cytosol: translation intron= non-coding s...
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LQB182 MidSem Exam (QUESTIONS AND ANSWERS )2022/2023
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19

november 2022

2022/2023

A+
Valance shell Outermost electron shell and its electrons determine chemical behaviour and bonding Radioactive isotopes Useful in medical diagnostic tests and in research Atoms can gain or lose electrons ... Metals lose electrons and non-metals accept ... Anions negatively charged ions (gain electrons) Cations positively charged ions (lose electrons) Intramolecular bonds Strong bonds - ionic, covalent, or metallic bonds Intermolecular bond...
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LQB182 Cell & Molecular Biology: Mid-Semester Practice Test 2022/2023
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2

november 2022

2022/2023

A+
The charge state of protons, neutrons, and electrons are _______. positive, neutral, negative, respectively The reactivity of an atom arises from ______. the existence of unpaired electrons in the valence shell 00:20 01:24 Atomic number indicates _______. the number of protons Covalent bonds differ from ionic and metallic bonds because in covalent bonding _______. pairs of electrons are shared Water contains 2 atoms of hydrogen and 1 atom of oxygen. What b...
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