Staar Biology Review 2

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What are proteins?

Back

Proteins are macromolecules made of amino acids that perform various functions in the body, including catalyzing biochemical reactions as enzymes, supporting immune responses, and facilitating cell signaling.

Front

What is the complementary DNA strand for the sequence AGT GCA?

Back

The complementary DNA strand is TCA CGT.

Front

What is the role of an enzyme inhibitor?

Back

An enzyme inhibitor is a substance that decreases the activity of an enzyme by preventing substrates from binding to it.

Front

Which macromolecule is primarily responsible for short-term energy storage?

Back

Carbohydrates are primarily responsible for short-term energy storage.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which molecules pass through the cell membrane via special proteins, without the use of energy, moving from high to low concentration.

Front

What are nitrogenous bases?

Back

Nitrogenous bases are the building blocks of DNA and RNA, consisting of adenine (A), thymine (T), cytosine (C), guanine (G), and uracil (U) in RNA.

Front

What is the function of enzymes in biological reactions?

Back

Enzymes act as catalysts that speed up chemical reactions in biological systems by lowering the activation energy required.

Front

What is the primary function of antibodies?

Back

Antibodies are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.