AP BIO BIOCHEM

Front

Which of the following molecules would contain a polar covalent bond? Cl₂, NaCl, H₂O, CH₄

Back

H₂O

Front

Which of the following is most closely related to the secondary structure of proteins?

• lipids
• peptide bonds
• alpha helix
• cellulose

Back

alpha helix

Front

The process by which protein conformation is lost or broken down is

Back

denaturation

Front

Which of the macromolecules below could be structural parts of the cell, enzymes, or involved in cell movement or communication? Options: nucleic acids, proteins, lipids, carbohydrates

Back

proteins

Front

The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called?

Back

a hydrogen bond

Front

Which two functional groups are always found in amino acids?

Back

carboxyl and amine

Front

What is the most likely cause of the tremendous variation and unique properties of proteins?

Back

interactions between R groups of the amino acids

Front

Water is an excellent solvent. Select the property that justifies this statement.

Back

As a polar molecule, it can surround and dissolve ionic and polar molecules.

Front

An organic compound that is composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio is known as a: lipid, carbohydrate, protein, nucleic acid

Back

carbohydrate

Front

If the pH of a solution is decreased from 7 to 6, what happens to the concentration of H+ and OH-?

Back

H+ has increased 10 times what it was at pH 7