AP Biology: Unit 1 Review (CED)

Front

What is the orientation of phospholipids in a cell membrane?

Back

Phospholipids orient in a bilayer with hydrophilic heads on the exterior and hydrophobic tails on the interior.

Front

What is one key difference between DNA and RNA?

Back

The phosphate group is not a difference; DNA and RNA differ in sugar, nitrogenous bases, and strandedness.

Front

How do adenine and thymine pair in the DNA double helix?

Back

Adenine pairs with thymine through 2 hydrogen bonds.

Front

How do guanine and cytosine pair in the DNA double helix?

Back

Guanine pairs with cytosine through 3 hydrogen bonds.

Front

What component of a polypeptide is involved in forming a peptide bond with the next amino acid?

Back

The carboxyl group of the previous amino acid.

Front

What is the process called when a bond within a polymer is broken using water?

Back

Hydrolysis.

Front

What is dehydration synthesis?

Back

A process where two molecules are joined together by removing water.

Front

What are the building blocks of proteins?

Back

Amino acids.

Front

What is the primary structure of a protein?

Back

The sequence of amino acids in a polypeptide chain.

Front

What is the role of the R group in amino acids?

Back

The R group determines the specific properties and identity of each amino acid.