Biology 103 Sample Test Questions Exam 1.0
Homeostasis provides what kind of environment?
Within tolerable ranges.
The atom diagnostically associated with organic compounds is
carbon.
Proteins may function as
structural units, hormones, storage molecules, transport molecules, or all of these? All of these.
Magnesium has 12 proteins. How many electrons are in its third energy level?
2
Which of the following is NOT a monomer?
Amino acid, fatty acid, starch, nucleotide, monosaccharide? A starch is a polymer.
Four of the five answers listed below are carbohydrates. Select the exception.
Cholesterol, cellulose, starch, sucrose, glycogen. Cholesterol is the exception.
Which statement is NOT true?
Electrons are unable to move out of the assigned orbital space.
When a hen's egg is cooked for breakfast, which of the following statements does not apply?
Gentle cooling will reverse the denaturation that has occurred. Denaturation cannot be reversed.
These contain enzymes and are the main organells of intracellular digestion.
Lysosomes.
Four of the five answers listed below are alkaline which is a pH above 7. Select the exception.
Milk of magnesia, household ammonia, tums, phosphate detergent and wine. Wine is the exception.
What kind of bond exists between two amino acids in a protein?
Peptide bonds.
Which of the following membrane proteins is responsible for responding to outside signals?
Receptor proteins.
Which statement is not true?
The lipid bilayer serves as a hydrophobic barrier between two fluid regions.
An NH2 group is an
amino group.
Cellular pH is kept near a value of 7 due to the action of
buffers.
The process of transformation of the first cell of a new individual into an adult is called
development.
These organelles used to move eukaryotic cells are the
flagella.
The most common elements in human body are
hydrogen, carbon, nitrogen, and oxygen.
The activities by which cells acquire and release energy as they make and break apart organic compounds
metabolism.
Amino acids are
the basic unit of proteins.
