Case study of Rebecca Lancefield

This lesson explores the life and work of revolutionary microbiologist Rebecca Lancefield and how she dedicated her 60-year scientific career to understanding Streptococcus, and other bacteria, which paved the way for modern antibiotics.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What type of substance are enzymes?

Carbohydrate Protein Fat Acid

1/7

Q2.Which of the following features of the small intestine increase the surface area to ensure maximum absorption of food molecules? Choose 3 answers.

Select three (3) boxes

Long Folded membranes covered with villi Excellent blood supply Villi covered with microvilli Most digestion takes place here

2/7

Q3.What is the enzyme that breaks down starch?

Lactase Protease Amylase Lipase

3/7

Q4.In the following hypothesis, what is the independent variable? "The surface area of the small intestine affects the rate of diffusion of food into the bloodstream."

The length of the small intestine The bloodstream The surface area of the small intestine Rate of diffusion of food into the bloodstream

4/7

Q5.In the following hypothesis, what is the dependent variable? "The surface area of the small intestine affects the rate of diffusion of food into the bloodstream."

The length of the small intestine The bloodstream The surface area of the small intestine Rate of diffusion of food into the bloodstream

5/7

Q6.What word dsecribes an enzyme that is no longer able to carry out its function?

Inactive Dead Denatured Broken

6/7

Q7.How does temperature affect enzyme activity?

The higher the temperature the higher the rate of enzyme activity The higher the temperature the higher the rate of enzyme activity, to a point. Then it starts to decrease. The higher the temperature the lower the rate of enzyme activity The higher the temperature the higher the rate of enzyme activity, to a point. It levels off and then begins to increase again.

7/7

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What type of substance are enzymes?

Carbohydrate Protein Fat Acid

1/7

Q2.Which of the following features of the small intestine increase the surface area to ensure maximum absorption of food molecules? Choose 3 answers.

Select three (3) boxes

Long Folded membranes covered with villi Excellent blood supply Villi covered with microvilli Most digestion takes place here

2/7

Q3.What is the enzyme that breaks down starch?

Lactase Protease Amylase Lipase

3/7

Q4.In the following hypothesis, what is the independent variable? "The surface area of the small intestine affects the rate of diffusion of food into the bloodstream."

The length of the small intestine The bloodstream The surface area of the small intestine Rate of diffusion of food into the bloodstream

4/7

Q5.In the following hypothesis, what is the dependent variable? "The surface area of the small intestine affects the rate of diffusion of food into the bloodstream."

The length of the small intestine The bloodstream The surface area of the small intestine Rate of diffusion of food into the bloodstream

5/7

Q6.What word dsecribes an enzyme that is no longer able to carry out its function?

Inactive Dead Denatured Broken

6/7

Q7.How does temperature affect enzyme activity?

7/7

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Case study of Rebecca Lancefield

This quiz will assess your understanding of Rebecca Lancefield's work in microbiology.

Q1.In which field of study did Rebecca Lancefield discover her findings of streptococcal bacteria?

Zoology Bacteriology Virology Mycology

1/5

Q2.One of Rebecca Lancefield's greatest accomplishments was the Lancefield groupings, what did this classify?

Bacteria Virus Fungi Protist

2/5

Q3.When Rebecca first applied for her Ph.D. at Colombia University, she was rejected. What was the reasoning?

The program was full They did not offer her field of study She was unable to afford it She was a woman

3/5

Q4.Rebecca discovered that streptococcal bacteria could also cause other diseases, which diseases did this include? (Choose three answers)

Select three (3) boxes

Pneumonia Scarlet Fever Erysipelas Common cold

4/5

Q5.Rebecca Lancefield's discoveries went on to help other doctors and scientists. Which TWO discoveries are associated with Lancefield's findings? (Choose two answers)

Select two (2) boxes

Where and how infections form in cells Classification of animals Antibiotics Classification of viruses

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Case study of Rebecca Lancefield

This quiz will assess your understanding of Rebecca Lancefield's work in microbiology.

Q1.In which field of study did Rebecca Lancefield discover her findings of streptococcal bacteria?

Zoology Bacteriology Virology Mycology

1/5

Q2.One of Rebecca Lancefield's greatest accomplishments was the Lancefield groupings, what did this classify?

Bacteria Virus Fungi Protist

2/5

Q3.When Rebecca first applied for her Ph.D. at Colombia University, she was rejected. What was the reasoning?

The program was full They did not offer her field of study She was unable to afford it She was a woman

3/5

Q4.Rebecca discovered that streptococcal bacteria could also cause other diseases, which diseases did this include? (Choose three answers)

Select three (3) boxes

Pneumonia Scarlet Fever Erysipelas Common cold

4/5

Q5.Rebecca Lancefield's discoveries went on to help other doctors and scientists. Which TWO discoveries are associated with Lancefield's findings? (Choose two answers)

Select two (2) boxes

Where and how infections form in cells Classification of animals Antibiotics Classification of viruses

5/5

Lesson summary: Case study of Rebecca Lancefield

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Case study of Rebecca Lancefield

Intro quiz - Recap from previous lesson

Intro quiz - Recap from previous lesson

Video

Worksheet

Case study of Rebecca Lancefield

Case study of Rebecca Lancefield

Lesson summary: Case study of Rebecca Lancefield

It looks like you have not completed one of the quizzes.

Time to move!

The next lesson in: Digestion and nutrition is: Review (Part 2)

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The next lesson in:
Digestion and nutrition
is:
Review (Part 2)