Freshman Biology Year Review

Identify the process shown in the illustration above:

• Dehydration synthesis

• Hydration synthesis

• Hydrolysis

• De-polymerization

One end of a phospholipid molecule forms hydrogen bonds with water. We can describe this end of the molecule as the _________________.

• polar hydrophilic end

• polar hydrophobic end

• non-polar hydrophilic end

• non-polar hydrophobic end

Amino acids have an identifiable structure. Which of the following accurately represents that structure?

• ammonia - carbon group - side chain

• NO2 - COH - side chain

• NH3 - COOH - side chain

• N2OH- COOH - side chain

Tags

NGSS.HS-LS1-6

When proteins are formed , their monomers are linked together to form

a _____________.

• polypeptide

• monopeptide

• bipeptide

• plurapeptide

Tags

NGSS.HS-LS1-6

Which of the following statements best describes the impact of the structure of proteins?

• The structure of a protein is the major factor in its function.

• The structure of a protein has some impact on its function.

• The structure of a protein can change, without impacting its function

• The structure of a protein results from being changed by enzyme reactions.

Glucose is an example of a(n) __________________, and is a ___________________.

• inorganic molecule; carbohydrate

• carbohydrate; disaccharide

• protein; monocarbohydrate

• carbohydrate; monosaccharide

Polysaccharides play important roles in cells. Which of the following correctly matches one type of polysaccharide with its primary function?

• starch, storage

• starch, cell walls

• glucose, cell walls

• cellulose, storage

There are five types of nitrogenous bases, four of which are found within DNA molecules. These are:

• adenine, thymine, guanine, uracil

• adenine, uracil, guanine, cytosine

• adenine, thymine, cytosine, guanine

• adenine, uracil, phosphate, ribose

The image above represents a(n) __________________ fatty acid, identifiable because of its _______________ bond(s).

• saturated fat; single carbon

• saturated fat; double carbon

• unsaturated; double carbon

• unsaturated, single carbon

Cell membranes allow some materials to pass freely, therefore, they are considered to be _____________________________

• selectively permeable

• ionically permeable

• completely permeable

• protein permeable