Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity increases as pH increases 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 .

The graphs show the reaction rate for an enzyme across a range of temperatures and pH. Based on these data, this enzyme functions best as what temperature and pH?

Temperature of 37oC and a pH of 6

Temperature of 27oC and a pH of 4

Temperature of 40oC and a pH of 8

Temperature of 50oC and a pH of 10

Which is the MOST valid conclusion based on this graph?

Enzyme function decreases after a certain favorable temperature.

Enzymes are not affected greatly by temperature.

Enzymes work most effectively at low temperatures.

Raising the temperature always makes an enzyme work better.

Enzymes are substances that speed up the rate of chemical reactions. The rate of enzyme action is affected by several factors. A researcher studying these factors made this graph. Which would be an appropriate title for this graph?

The Effect of Temperature on Enzyme Action

Enzyme Action and Changes in pH

The Effect of Temperature on Enzyme Populations

How Enzyme Action Alters Temperature

In this image, what does line 1 represent

the activation energy needed without using an enzyme

the activation energy needed using an enzyme

In this image, what does line 2 represent

the activation energy needed using an enzyme

the activation energy needed without using an enzyme

On this graph the X axis represents ________ and the Y axis represents _________________.

progress of the reaction, energy

Energy, progress of the reaction

progress of the reaction, amount of product

enzyme graphs

Quiz

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Biology

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9th Grade

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Practice Problem

•

Medium

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NGSS

HS-PS1-5, HS-PS1-4, HS-LS1-6

Standards-aligned

Ayesha Denny

Used 178+ times

FREE Resource

About this resource

This quiz focuses on enzyme structure, function, and factors affecting enzyme activity, making it ideal for 9th grade biology students studying biochemistry and cellular processes. The questions assess students' understanding of enzyme composition as proteins, their sensitivity to environmental conditions like temperature and pH, and their role in lowering activation energy for biochemical reactions. Students need to demonstrate proficiency in interpreting scientific graphs, identifying optimal conditions for enzyme function, understanding the relationship between enzyme structure and activity, and recognizing how enzymes facilitate chemical reactions by reducing activation energy barriers. The quiz requires students to analyze data trends, draw conclusions from experimental results, and apply knowledge of enzyme-substrate interactions to predict outcomes under varying conditions. Created by Ayesha Denny, a Biology teacher in US who teaches grade 9. This assessment serves as an excellent tool for formative evaluation of student understanding before advancing to more complex topics in cellular respiration and metabolism. Teachers can deploy this quiz as a warm-up activity to activate prior knowledge, assign it as homework to reinforce classroom learning, or use it for review sessions before unit examinations. The graph interpretation questions particularly strengthen students' scientific literacy skills while building confidence in data analysis. This quiz effectively supports instruction by providing immediate feedback on student comprehension of enzyme kinetics and optimal conditions for biological processes. The content aligns with NGSS standards HS-LS1-6 (construct and revise an explanation based on evidence for how carbon, hydrogen, and oxygen from sugar molecules may combine with other elements to form amino acids) and supports Common Core mathematical practices in interpreting data and constructing explanations from scientific evidence.

enzyme graphs

14 questions

Most enzymes are composed of .....

Which of the following conclusions can be drawn from this graph?

Based on the graph, what is the optimal temperature for this enzyme?

Letter D...

In an experiment to investigate the effect of temperature on the activity of a digestive enzyme X, the time taken for the digestion of a fixed amount of substrate by this enzyme was recorded. Which of the following graphs shows the most likely results of the experiment?

The graphs show the reaction rate for an enzyme across a range of temperatures and pH.

Based on these data, this enzyme functions best as what temperature and pH?

A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH is the enzyme most active?

Based on the graph above, at what temperature range is enzyme activity at its greatest?

A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH is the enzyme least active?

Which is the MOST valid conclusion based on this graph?

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enzyme graphs

14 questions

Most enzymes are composed of .....

Which of the following conclusions can be drawn from this graph?

Based on the graph, what is the optimal temperature for this enzyme?

Letter D...

In an experiment to investigate the effect of temperature on the activity of a digestive enzyme X, the time taken for the digestion of a fixed amount of substrate by this enzyme was recorded. Which of the following graphs shows the most likely results of the experiment?

The graphs show the reaction rate for an enzyme across a range of temperatures and pH.Based on these data, this enzyme functions best as what temperature and pH?

A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH is the enzyme most active?

Based on the graph above, at what temperature range is enzyme activity at its greatest?

A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH is the enzyme least active?

Which is the MOST valid conclusion based on this graph?

Create a free account and access millions of resources

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The graphs show the reaction rate for an enzyme across a range of temperatures and pH.

Based on these data, this enzyme functions best as what temperature and pH?