Lactase Persistance Sense-Making

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WALT: Explain Lactase
Activity

Do Now:

What is one thing you learned from part one of the state lab?

Agenda:

● Finish Part 1 of State

Lab

● Reintroduce Kanna
● Sense-Making

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Finishing the State

Lab

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What do we
remember
about Kanna
from our unit
opening?

Open Ended

What do you remember about Kanna from out unit opening?

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To figure out what exactly is going on with Kanna, we
took a sample of her intestinal fluids after she had milk and compared it to her brother, her mother and one of her American classmates, Alissa.

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THE

RESULTS

TASK: At your tables
discuss your noticings
about the results. JOT
7 things you notice. We
will share out after.

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Starting Position:
●Come up with one important idea your groups wants to share.

●Make sure everyone is ready to talk!

Roles/Rules:
●One person per table shares

●Presenter must stand up and speak loudly.

●We will move quickly.

●It’s ok to repeat, but you have to acknowledge it.

●Listen for patterns, agreement, disagreement….

Dairy Investigation: What did you observe? What questions do you still have?

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Check for
understanding

Independently complete the next set of practice problems to see if you
understood the key ideas of the lab.

Multiple Choice

What enzyme breaks down lactose in the body?

• Lipase

• Lactase

• Amylase

• Maltase

Multiple Choice

Lactose is a _____

• Sugar

• Enzyme

Multiple Choice

What two monosaccharides (simple sugars) are formed when lactase enzyme hydrolyzes lactose?

• Glucose and fructose

• Glucose and galactose

Multiple Choice

What is the main waste product created by bacterial cells in the large intestine?

• Glucose

• Galactose

• Lactase

• Gases

Multiple Choice

At what temperature condition does lactase work best?

• 60

• 37

• 110

Multiple Choice

With what 3 letters do enzymes typically end?

• -ose
• -ase
• -ese
• -tic

Multiple Choice

Letter D...

• active site
• enzyme
• substrate
• products

Multiple Choice

Letter B...

• active site
• enzyme
• substrate
• products

Multiple Choice

Letter C...

• active site
• enzymes
• substrate
• products

Multiple Choice

Letter E...

• active site
• enzyme
• substrate
• products

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Dairy Investigation Summary

STUDENT

IDEAS

● As a part of the digestive process, larger molecules can be broken down into smaller ones

● Lactose is a larger molecule that breaks down into glucose and galactose

● Lactase in the enzyme that “fits” with Lactose,

● Enzymes fit with there substrate based on shape like a "lock and key."