AP Biology Exam

The function of fermentation is to regenerate ______ so that glycolysis can continue to produce ATP.

• NAD+

• glucose

• lactic acid

• ethanol

Which end of the water molecule has a slightly positive charge?

• the oxygen end

• the hydrogen ends

• both ends are slightly positive

• neither end is positive

Which properties of water are helpful for aquatic organisms? (3)

• Having a high specific heat capacity stops the temperature of ponds, lakes, and oceans fluctuating too much over a short period of time

• High latent heat of vaporization means ponds, lakes, seas, and oceans don't lose too much water on extremely hot days

• Being a polar molecule allows electric eels to become charged up quicker

• Ice is less dense than liquid water so forms an insulating layer on ponds and polar seas/oceans

• Hydrogen bonds make it easier for fish to swim

Tags

NGSS.HS-ESS2-5

Which statement explains why water molecules stick together?

• both sides are negative

• one side has a positive charge and the other side has a negative charge

• one side has a negative charge adn the other side has a neutral charge

• both sides are positive

Tags

NGSS.MS-PS2-3

What property of water allows for water to act as a temperature regulator for the world?

• Cohesive Behavior

• Expansion Upon Freezing

• High Specific Heat

• Universal Solvent

Tags

NGSS.HS-PS3-4

Which macromolecule(s) have phosphorus?

• Carbohydrates

• Proteins

• Nucleic Acids

• Fats

Describes the forming of a bond between monomers with the removal of a water molecule.

• Hydrolysis

• Dehydration

Which of the following is NOT in the monomer of a protein?

• Amine Group

• R Group

• Carboxyl Group

• Nitrogenous Base

Polysaccharides are best described as:

• a complex molecules such as starches that are composed of many chains of sugar monomers

• chains of amino acids joined by peptide bonds

• molecules made of glycerol and three fatty acid chains

• a five- or six-carbon sugar molecule bonded to an aldehyde or ketone group.

Which of the following statements correctly describes the difference between saturated and unsaturated fats?

• Saturated fats tend to be solid at room temperature; unsaturated fats are liquid at room temperature

• Saturated fats are cannot pack together closely because of their bent structure; unsaturated fats can pack together because they are flat

• Saturated fats come from plants and fish; unsaturated fats are from animals (except fish)

• Saturated fats are considered “healthy” fats; unsaturated fats may contribute to cardiovascular disease