Unit 1 AP Biology Review

Front

What is the most stable DNA strand composition at high temperatures?

Back

A DNA strand with 25% A/T and 75% G/C is most stable at high temperatures due to the stronger hydrogen bonding between G and C pairs.

Front

What macromolecule serves as the fluid interface in the plasma membrane?

Back

Phospholipids serve as the fluid interface between the intracellular and extracellular environments in the plasma membrane.

Front

How many different amino acids are there?

Back

There are 20 different amino acids.

Front

Which biological macromolecule contains phosphorus?

Back

Nucleic acids contain phosphorus.

Front

What is the process called when a protein unfolds due to heat?

Back

The process is known as denaturation.

Front

What are the building blocks of proteins?

Back

Amino acids are the building blocks of proteins.

Front

What is the primary function of nucleic acids?

Back

Nucleic acids, such as DNA and RNA, store and transmit genetic information.

Front

What is the role of carbohydrates in living organisms?

Back

Carbohydrates provide energy and serve as structural components in cells.

Front

What is the structure of a phospholipid?

Back

A phospholipid consists of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.

Front

What is the significance of hydrogen bonds in DNA?

Back

Hydrogen bonds between complementary base pairs (A-T and G-C) stabilize the DNA double helix structure.