26 Questions
What type of bond is formed between the oxygen atom of one water molecule and the hydrogen of another?
Hydrogen bond
What is the lifetime of each hydrogen bond in liquid water?
1 to 20 picoseconds
How many neighboring water molecules can each water molecule form hydrogen bonds with?
4
In ice, how many other water molecules does each water molecule form hydrogen bonds with?
4
Which type of solvent is water?
Polar solvent
What is the main focus of biochemistry?
The study of biological processes at the cellular and molecular level
Which discipline emerged as a combination of chemistry, physiology, and biology in the 20th century?
Biochemistry
What are examples of small molecules in cells?
Phospholipids, glycolipids, sterol, vitamins
What type of biomolecule are amino acids and nucleotides?
Monomers
What gives water its unusual properties such as a higher melting point and boiling point?
Hydrogen bonding
What is the main focus of biochemistry?
Studying the chemical processes in living organisms
What are examples of small molecules found in cells?
Vitamins and neurotransmitters
What are the building blocks of cells known as?
Monomers
What makes up 70% or more of the weight of most organisms?
Water
What gives water its unusual properties such as a higher melting point and boiling point?
Hydrogen bonding
Which discipline emerged as a combination of chemistry, physiology, and biology in the 20th century?
Biochemistry
What is the result of the unequal electron sharing in the water molecule?
Two electric dipoles, one along each of the H—O bonds
What is the bond dissociation energy for hydrogen bonds in liquid water?
23 kJ/mol
What is the phrase 'flickering clusters' applied to in liquid water?
Short-lived groups of water molecules interlinked by hydrogen bonds
What allows each water molecule to form hydrogen bonds with as many as four neighboring water molecules?
Nearly tetrahedral arrangement of the orbitals about the oxygen atom
In ice, how many other water molecules does each water molecule form hydrogen bonds with?
4
What type of solvent is water?
Polar solvent
What gives water its unusual properties such as a higher melting point and boiling point?
Ionization of H2O to hydrogen ions and hydroxide ions
What are nonpolar solvents such as chloroform and benzene poor solvents for?
Polar biomolecules
What is the main focus of biochemistry?
Study of chemical processes within and relating to living organisms
What type of bond is formed between the oxygen atom of one water molecule and the hydrogen of another?
Hydrogen bond
Explore the fundamentals of biochemistry, which is the application of chemistry to the study of biological processes at the cellular and molecular level. Learn about the emergence of biochemistry as a distinct discipline that combines chemistry, physiology, and biology to investigate the chemistry of living systems.
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