Question

question 13
enzymes speed up chemical reactions by __.

• increasing the activation energy needed to start them
• lowering the activation energy needed to start them
• dissolving the reactants to make them easier to work with
• breaking all of the chemical bonds in the reactants

question 14
the function of an enzyme depends upon the enzymes __.

• amount of water
• chemical make up
• ability to be dissolved in water
• shape

Explanation:

<pre_analysis>
{
"quality": "clear",
"question_count": 2,
"skills_matched": [
"direct_cot",
"multiple_choice_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"Enzyme Catalysis",
"Enzyme Structure"
],
"new_concepts": [],
"current_concepts": [
"Enzyme Catalysis",
"Enzyme Structure"
]
}
</pre_analysis>

<reasoning>

Analyze Question 13

Enzymes are biological catalysts that accelerate chemical reactions by lowering the activation energy barrier required for the transition state, rather than changing the overall free energy of the reaction.

Analyze Question 14

The function of an enzyme is highly specific and depends directly on its three-dimensional shape (conformation), particularly the shape of its active site which must match the substrate.
</reasoning>

<answer>

Question 13

<mcq-option>increasing the activation energy needed to start them</mcq-option>
<mcq-correct>lowering the activation energy needed to start them</mcq-correct>
<mcq-option>dissolving the reactants to make them easier to work with</mcq-option>
<mcq-option>breaking all of the chemical bonds in the reactants</mcq-option>

Question 14

<mcq-option>amount of water</mcq-option>
<mcq-option>chemical make up</mcq-option>
<mcq-option>ability to be dissolved in water</mcq-option>
<mcq-correct>shape</mcq-correct>
</answer>

<post_analysis>
{
"subject": "Natural Science",
"question_type": "Multiple Choice",
"knowledge_point": [
"Natural Science",
"Biology",
"Enzymes"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 2,
"skills_matched": [
"direct_cot",
"multiple_choice_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"Enzyme Catalysis",
"Enzyme Structure"
],
"new_concepts": [],
"current_concepts": [
"Enzyme Catalysis",
"Enzyme Structure"
]
}
</pre_analysis>

<reasoning>

Analyze Question 13

Enzymes are biological catalysts that accelerate chemical reactions by lowering the activation energy barrier required for the transition state, rather than changing the overall free energy of the reaction.

Analyze Question 14

The function of an enzyme is highly specific and depends directly on its three-dimensional shape (conformation), particularly the shape of its active site which must match the substrate.
</reasoning>

<answer>

Question 13

<mcq-option>increasing the activation energy needed to start them</mcq-option>
<mcq-correct>lowering the activation energy needed to start them</mcq-correct>
<mcq-option>dissolving the reactants to make them easier to work with</mcq-option>
<mcq-option>breaking all of the chemical bonds in the reactants</mcq-option>

Question 14

<mcq-option>amount of water</mcq-option>
<mcq-option>chemical make up</mcq-option>
<mcq-option>ability to be dissolved in water</mcq-option>
<mcq-correct>shape</mcq-correct>
</answer>

<post_analysis>
{
"subject": "Natural Science",
"question_type": "Multiple Choice",
"knowledge_point": [
"Natural Science",
"Biology",
"Enzymes"
]
}
</post_analysis>