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BIOC 3021 Exam 1 Lecture 1 Questions And
Answers (Guaranteed A+)
Most abundant elements in living organisms - answer✔Hydrogen, oxygen, carbon, nitrogen,
phosphorous, sulfur
Number of essential minerals for body function - answer✔17
Strength of covalent bonds - answer✔Strongest bonds in biomolecules
Covalent bond - answer✔An electron is shared between atoms
Ionic bond - answer✔An electron is donated between atoms
Hydrogen bond - answer✔the H takes on a partial positive charge and the electronegative atom
takes on a partial negative charge
Most common atoms in hydrogen bonding - answer✔oxygen and nitrogen
Why are hydrogen bonds essential for biochemistry? - answer✔Protein structure, binding of
enzymes to substrates, holds the DNA double helix together
Hydrogen bonds are responsible for what properties in water - answer✔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 - answer✔caused by induced electrical interactions between closely
approaching atoms
Relative strength of bonds from weakest to strongest - answer✔VDW, Hydrogen bond, ionic
bond, covalent bond
Bronsted acid - answer✔proton donor
1|Page
ALL RIGHTS RESERVED.
BIOC 3021 Exam 1 Lecture 1 Questions And
Answers (Guaranteed A+)
Most abundant elements in living organisms - answer✔Hydrogen, oxygen, carbon, nitrogen,
phosphorous, sulfur
Number of essential minerals for body function - answer✔17
Strength of covalent bonds - answer✔Strongest bonds in biomolecules
Covalent bond - answer✔An electron is shared between atoms
Ionic bond - answer✔An electron is donated between atoms
Hydrogen bond - answer✔the H takes on a partial positive charge and the electronegative atom
takes on a partial negative charge
Most common atoms in hydrogen bonding - answer✔oxygen and nitrogen
Why are hydrogen bonds essential for biochemistry? - answer✔Protein structure, binding of
enzymes to substrates, holds the DNA double helix together
Hydrogen bonds are responsible for what properties in water - answer✔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 - answer✔caused by induced electrical interactions between closely
approaching atoms
Relative strength of bonds from weakest to strongest - answer✔VDW, Hydrogen bond, ionic
bond, covalent bond
Bronsted acid - answer✔proton donor
1|Page
