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BIOC 3021 EXAM 1 LECTURE 1 QUESTIONS 2025. | Exam Revision Questions And Correct Answers | Graded A+ | 2025 Update |

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BIOC 3021 EXAM 1 LECTURE 1 QUESTIONS 2025. | Exam Revision Questions And Correct Answers | Graded A+ | 2025 Update |

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BIOC 3021 EXAM 1 LECTURE 1 QUESTIONS AND ACCUARATE ANSWERS
2024/2025 | VERIFIED
Most abundant elements in living organisms - Hydrogen, oxygen, carbon, nitrogen, phosphorous,
sulfur



Number of essential minerals for body function - 17



Strength of covalent bonds - Strongest bonds in biomolecules



Covalent bond - An electron is shared between atoms



Ionic bond - An electron is donated between atoms



Hydrogen bond - the H takes on a partial positive charge and the electronegative atom takes on a
partial negative charge



Most common atoms in hydrogen bonding - oxygen and nitrogen



Why are hydrogen bonds essential for biochemistry? - Protein structure, binding of enzymes to
substrates, holds the DNA double helix together



Hydrogen bonds are responsible for what properties in water - 1. Cohesiveness and adhesiveness

2. High heat capacity

3. High heat of vaporization

4. Expansion upon freezing

5. Versatility as a solvent



Cause of VDW interactions - caused by induced electrical interactions between closely
approaching atoms

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