Redo Flashcards
(15 cards)
The negative charge at the end of a h2o molecule is attracted to the positive charge of another h2o molecule, what is this,
A hydrogen bond
In a single molecule of water the two hydrogen bonds are bonded to a single oxygen atom by…
Polar covalent bonds
How the properties of water allow movement through vessels in a plant
Water evaporates from the leaves, cohesion causes the water that is leaving to pull on the molecule behind it. Adhesion causes water to stick to the plant walls, contributes to the capillary action in the narrow vessels.
Why does an ice cube cool a drink
Because the kinetic energy in the drink increases
Why does ice float?
A hydrogen bonding
Polymers of polysaccharides, fats, and proteins are all synthesized from monomers by which process
The removal of water (dehydration reactions)
Summarize the reaction between dehydration reactions and hydrolysis
Dehydration reactions assmeble polymers
Hydrolysis breaks down polymers
Class of biological molecules known as lipids
They are insoluble in water
20 diff amino acids found in polypeptides exhibit different chemical & phys properties bc of difference of
Side chains ( r groups)
What maintains the secondary structure of a protein
Hydrogen bonds
What do enzymes do
Increase the rate of a reaction
What can enzymes do?
For reactions. They catalyze, they are used many types for a specific reaction, proteins function as catalysts
X y z a. A binds to the enzyme that converts x to y at a position remote from its active site. This binding decreases the activity of the enzyme
X is substrate
A is the allosteric inhibitor
If an enzyme is added to a solution where it’s substrates and products are in equilibir what would occur?
Additional product would be formed
Why does the disc ride faster?
The higher substrate concentration speeds the reactions
