U3C2 Vocabulary

What is Adenosine Triphosphate?

• Adenosine Triphosphate is a waste product produced by cells.

• Adenosine Triphosphate is a type of sugar molecule.

• Adenosine Triphosphate is a type of protein.

• Adenosine Triphosphate is a molecule that stores and releases energy in living organisms.

Answer explanation

Adenosine Triphosphate is a molecule that stores and releases energy in living organisms.

What is Adenosine Diphosphate?

• Adenosine Diphosphate is a type of sugar used in DNA synthesis.

• Adenosine Diphosphate is a type of protein found in the nucleus of cells.

• Adenosine Diphosphate is a neurotransmitter involved in brain function.

• Adenosine Diphosphate is a recycled nucleotide involved in cellular energy metabolism.

Answer explanation

Adenosine Diphosphate is a recycled nucleotide used in cellular energy metabolism.

Which of the following best defines a carbohydrate?

• A type of fat that provides long-term energy storage in the body.

• A biomolecule consisting of carbon, hydrogen, and oxygen atoms, providing a primary source of energy for living organisms.

• A building block of proteins that helps repair damaged cells in the body.

• A type of vitamin that supports bone health and immune function.

Answer explanation

A carbohydrate is a biomolecule consisting of carbon, hydrogen, and oxygen atoms, providing a primary source of energy for living organisms.

What is the function of the mitochondria?

• Produce energy through cellular respiration

• Facilitate cell division

• Produce oxygen for the cell

• Store and release energy

Answer explanation

The mitochondria produce energy through cellular respiration.

What are the 3 parts of ATP?

• adenine, ribose, and two phosphate groups

• adenine, glucose, and three phosphate groups

• adenine, ribose, and three phosphate groups

• guanine, ribose, and three phosphate groups

Answer explanation

ATP consists of adenine, ribose, and three phosphate groups. These components are essential for ATP's role as the primary energy currency in cells.

This is the main energy currency for all cells.

• ADP

• GTP

• AMP

• ATP

Answer explanation

ATP is the main energy currency for all cells.

What is the best definition for catabolic reaction?

• A catabolic reaction is a metabolic process that builds complex molecules from simpler ones, consuming energy in the process.

• A catabolic reaction is a metabolic process that breaks down complex molecules into simpler ones, releasing energy in the process.

• A catabolic reaction is a metabolic process that has no effect on the energy level of the organism.

• A catabolic reaction is a metabolic process that only occurs in plants and not in animals.

Answer explanation

A catabolic reaction is a metabolic process that breaks down complex molecules into simpler ones, releasing energy.

What is the best definition for exothermic reaction?

• A chemical reaction that releases energy in the form of heat or light.

• A chemical reaction that does not release or absorb energy.

• A chemical reaction that absorbs energy in the form of heat or light.

• A chemical reaction that releases energy in the form of sound or motion.

Answer explanation

An exothermic reaction is a chemical reaction that releases energy in the form of heat or light. It is the correct choice because it accurately describes the definition of an exothermic reaction.

What is the best definition for anabolic reaction?

• Anabolic reaction is a metabolic process in which complex molecules are synthesized from simpler ones.

• Anabolic reaction is a metabolic process in which complex molecules are broken down into simpler ones.

• Anabolic reaction is a type of reaction that occurs only in plants.

• Anabolic reaction is a process that releases energy from molecules.

Answer explanation

Anabolic reaction is a metabolic process that builds complex molecules from simpler ones.

What is the best definition for endothermic reaction?

• A chemical reaction that occurs at extremely high temperatures

• A chemical reaction that does not involve heat

• A chemical reaction that absorbs heat from its surroundings

• A chemical reaction that releases heat to its surroundings

Answer explanation

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.