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Copy of CK12 1.15- 1.18 (2/1/2024)

Last updated almost 2 years ago
52 questions
1.15
1

What happens in an exothermic reaction?

1

What is the general chemical equation for an exothermic reaction?

1

What is an example of an exothermic reaction?

1

What is a chemical reaction that absorbs energy called?

1

What is the general chemical equation for an endothermic reaction?

1

Why does a chemical cold pack cool down?

1

What is activation energy in a chemical reaction?

1

What is activation energy similar to?

1

Does a chemical reaction continue needing activation energy after it has started?

1.16
1

What term describes the sum of all biochemical reactions in an organism?

1

Where do biochemical reactions occur in living organisms?

1

Which two fields of study are needed to fully understand biochemical reactions?

1

Which biochemical reaction breaks down molecules into smaller units?

1

What type of reaction is the joining of amino acids to form a protein?

1

Which type of reaction releases energy?

0

What type of reaction occurs when your body digests food? Hint: Glucose.

1.17
1

What are biological catalysts in organisms called?

1

Why must the rate of most biochemical reactions be increased by a catalyst?

1

What is the main role of enzymes in biochemical reactions?

1

Are enzymes used up in the reactions they control?

1

How are enzymes different from other catalysts?

1

What is the efficiency of enzymes in catalyzing reactions?

1.18
1

What role do enzymes play in biochemical reactions?

1

What is activation energy in the context of biochemical reactions?

1

Which phrase best describes a catalyst?

1

What are the products of a combustion reaction involving glucose and oxygen?

1

What happens to the activation energy in the presence of an enzyme?

1

What is the role of enzymes in a chemical reaction?

1

What is released during a combustion reaction of glucose and oxygen?

1

What is the role of enzymes in a biological reaction?

1

What is the name given to the reactant molecules enzymes bind?

1

Where do enzymes bind reactant molecules?

1

How do enzymes position reactants for a reaction?

1

What is the term for the molecule that binds an enzyme at its active site?

1

What occurs when an enzyme and substrate form a complex?

1

What happens to the products after a biochemical reaction on the enzyme's active site?

1

What factors can influence the activities of enzymes?

1

Which enzyme functions best in the acidic environment of the stomach?

1

What is the optimal pH for the activity of pepsin?

1

Trypsin operates optimally in which part of the digestive system?

1

What happens to most enzymes at temperatures higher than 98.6ËšF?

1.15- 1.18
1

Chemical reactions do not necessarily involve energy.

1

An endothermic reaction is one that absorbs energy.

1

The activation energy is the energy used to end a chemical reaction.

1

Exothermic reactions absorb energy from surroundings.

1

Biochemical reactions are chemical reactions that take place inside the cells of organisms.

1

All chemical reactions in an organism need enzymes to take place.

1

Biological catalysts that speed up biochemical reactions are known as enzymes.

1

Enzymes increase the activation energy required to start biochemical reactions.

1

Enzymes are unaffected by changes in temperature, ionic conditions or pH.

1

The function of an enzyme is not dependent on its surrounding environment.

1

Enzymes can help to accelerate biochemical reactions.