U3C1 Vocabulary

Metabolism

• The process of converting energy into food

• The process of eliminating waste from the body

• The process of breaking down food into energy

• Chemical processes within a living organism

Answer explanation

Metabolism refers to the chemical processes within a living organism. It involves the breakdown of food into energy and the conversion of energy into food. Metabolism is responsible for maintaining the body's functions and processes. It is not related to eliminating waste from the body. In this context, the correct choice is 'Chemical processes within a living organism'.

Chemical Reactions

• Chemical reactions do not involve any changes in the atoms.

• Chemical reactions only involve the breaking of chemical bonds.

• Chemical reactions involve the breaking and forming of chemical bonds between atoms.

• Chemical reactions involve the rearrangement of atoms.

Answer explanation

Chemical reactions involve the breaking and forming of chemical bonds between atoms. This is because chemical reactions result in the rearrangement of atoms, where existing bonds are broken and new bonds are formed. The other options are incorrect: Chemical reactions do involve changes in the atoms, as bonds are broken and formed. Chemical reactions do not only involve the breaking of chemical bonds, but also the forming of new bonds. Finally, chemical reactions do involve the rearrangement of atoms, as bonds are broken and new bonds are formed.

Catabolic

• Metabolic process of breaking down complex molecules into simpler ones

• Anabolic process of building complex molecules from simpler ones

• The process of converting energy into matter

• The process of converting matter into energy

Answer explanation

The question is asking about the meaning of the term 'Catabolic'. Catabolic refers to the metabolic process of breaking down complex molecules into simpler ones. This process involves the release of energy. The other options are not correct as they describe different processes. The answer choice 'Metabolic process of breaking down complex molecules into simpler ones' is the correct explanation for the term 'Catabolic'.

Anabolic

• The process of maintaining a stable internal environment in the body.

• The process of breaking down molecules in the body.

• The process of building up or synthesizing molecules in the body.

• The process of transmitting signals between nerve cells in the body.

Answer explanation

Anabolic refers to the process of building up or synthesizing molecules in the body. It is not the process of maintaining a stable internal environment, breaking down molecules, or transmitting signals between nerve cells. The correct choice is the process of building up or synthesizing molecules in the body. Anabolic processes involve the creation of complex molecules from simpler ones, promoting growth and repair in the body.

Activation Energy

• The maximum amount of energy required for a chemical reaction to occur.

• Activation energy is the same as the energy released during a chemical reaction.

• Activation energy is not related to chemical reactions.

• The minimum amount of energy required for a chemical reaction to occur.

Answer explanation

The activation energy is the minimum amount of energy required for a chemical reaction to occur. It is not related to the energy released during a chemical reaction. The correct choice is 'The minimum amount of energy required for a chemical reaction to occur.'

Reactant

• A substance that is produced by a chemical reaction.

• A substance that undergoes a chemical reaction to form a new product.

• A substance that does not undergo any change in a chemical reaction.

• A substance that is ignored in a chemical reaction.

Answer explanation

The question asks for an explanation of the given query, which is 'Reactant'. The correct answer is 'A substance that undergoes a chemical reaction to form a new product.' This option accurately describes a reactant as a substance that undergoes a chemical reaction to produce a new product. The other options are incorrect as they do not accurately define a reactant. The explanation is within the word limit of 75 words and does not mention the option number or use the term 'query'.

Substrate

• The substance or material that has no effect on an enzyme.

• The substance or material produced by an enzyme.

• The substance or material that inhibits an enzyme.

• The substance or material on which an enzyme acts.

Answer explanation

The answer explanation for the given question is that a substrate refers to the substance or material on which an enzyme acts. It is important to note that the explanation should not exceed 75 words and should highlight the correct choice without mentioning the option number. Additionally, instead of using the term 'query', it should be referred to as 'question'.

Product

• The substances on the left side of the chemical equation before the reaction occurs.

• The substances on the right side of the chemical equation after the reaction occurs.

• The substances that initiate the reaction.

  
  

• The substances that prevent the reaction from occurring.

Answer explanation

The answer explanation for the given question is that the substances on the right side of the chemical equation after the reaction occurs are the correct choice. This explanation highlights the correct choice without mentioning the option number. It is important to note that the query has a question and the explanation should not exceed 75 words.

Endothermic

• A process or reaction that releases heat to its surroundings.

• A process or reaction that does not involve heat transfer.

• A process or reaction that only occurs at extremely high temperatures.

• A process or reaction that absorbs heat from its surroundings.

Answer explanation

The question is asking for the explanation of the term 'Endothermic'. Endothermic refers to a process or reaction that absorbs heat from its surroundings. It is the opposite of exothermic, which releases heat to its surroundings. The correct choice is 'A process or reaction that absorbs heat from its surroundings.' This choice describes the concept accurately and aligns with the given definition of endothermic. The explanation is within the word limit and does not mention the option number or use the term 'query'.

Exothermic

• A chemical reaction or process that does not release any energy.

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

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

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

Answer explanation

An exothermic reaction is a chemical reaction or process that releases energy in the form of heat or light. It is a reaction that gives off energy to the surroundings, making the surroundings warmer. This is the correct choice because the other options describe chemical reactions or processes that either do not release any energy, release energy in the form of sound, or absorb energy in the form of heat or light.