Macromolecules and Enzymes

W12D3 Emzymes

SWBAT describe the structure and function of enzymes

Listen to the audio clips! It'll help you move through this interactive lesson! I'm sad I'm not with you, but this will help you complete all of your work on enzymes :)

Multiple Choice

**Which of the following is NOT an organic molecule?

BID: we discussed 4 organic molecules on Monday, which of the following is not one of the macromolecules we discussed?

• water

• glucose

• protein

• DNA

Multiple Choice

Which of the following accurately pairs a macromolecule with its subunit?

• Starch; glucose

• Protein; fatty acid

• Lipid; nucleotide

• Carbohydrate; amino acid

Multiple Choice

*Molecules are combined in a chemical reaction, and energy is stored. Where in the produced molecule is the energy stored?

• In the oxygen atoms found in the molecule

• In the bonds between atoms

• In each of the atoms located in the molecule

• In the carbon atoms found in the molecule

Open Ended

**Is the reaction in the diagram a synthesis or digestion reaction? Create a claim to answer this question and support it with evidence from the diagram.

BID: Are molecules combining or breaking apart?

BID: Is the final product a macromolecule or micromolecule?

Slide 6: Why is this a synthesis reaction explained.

Open Ended

Based on what you know about cellular respiration, justify whether it is a synthesis or digestion reaction.

Why is cellular respiration a synthesis reaction?

Thought question: What would happen to a cell if these reactions did not happen all the time?

We're going to discuss enzymes! Today you should be able to determine how enzymes maintain homeostasis.

Cellular Energy: Enzymes

Read the paragraph and record notes in your notebook!

We often talk about reactions and the molecules that change in those reactions. Those changes don't happen on their own. If you leave a blob of protein in a dish, will it just break down to the amino acids? No. What will do it? Enzymes! Enzymes are the biological substances (proteins) that act as catalysts and help complex reactions occur everywhere in life.

Read the paragraph and record notes

Assembly Line Robots

You all know about cars and the assembly lines where they are made. There are giant robots helping people do specific tasks. Some lift the whole cars, some lift doors, and some just put bolts on. Enzymes are like those giant robots. They grab one or two pieces, do something to them, and then release them. Once their job is done, they move to the next piece and do the same thing again. They are little protein robots inside your cells.

Read and record notes

Assembly Line Robots continued...

Enzymes complete very, very specific jobs and do nothing else. The robot that was designed to move a car door can't put brakes on the car. The specialized robot arms just can't do the job. Enzymes are the same. They can only work with specific molecules and only do specific tasks. For example, you might have a protein in a cell. Even with hundreds of amino acids in the chain, the overall shape changes if one amino acid is different. That tiny shape change could stop the enzyme from doing its job.. In the same way that there are specialized robots for different types of cars, there are enzymes for neural cells, intestinal cells, and your saliva.

Copy the notes below into your notebook

• Enzyme- A type of protein that acts as a catalyst (speeds up chemical reactions)

• Substrate- Any molecule in which the enzymes act on. The enzyme can help either synthesize or digest substrates

•  Active Site- region of an enzyme where substrate molecules bind and undergo a chemical reaction. The active is specifically shaped to fit a specific substrate

Enzymes are selective and only substrates that fit it perfectly will be catalyzed by the enzyme!

Catalyze: a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

Copy this diagram into your notebook entry for today.

How enzymes work...kinda like a shady friend. The enzyme uses up the substrate and when it's all done the substrate is forever changed. It's no longer considered a substrate instead it's considered the product!

Don't be shady like enzymes!!

Write these steps below in your notebook for today’s entry.

• 1.  An enzyme and a substrate are in the same area

• 2.  The enzyme grabs on to the substrate at the active site

• 3.  Reaction occurs; the substrate is either synthesized or digested

• 4. The enzyme lets go and returns to normal, ready to work on another molecule of substrate. The substrate is no longer the same. It is now called the product.

Class is done :) Thanks for joining! Please answer the next few questions as the questions for your deliverable!! You DO NOT have any other materials to complete. Submit a picture of your notebook and you're all set for science for today!!

HAPPY LEARNING ✍️

Open Ended

*What do Enzymes do?

Multiple Choice

**Which of the following molecules would most likely react with the enzyme shown below?

BID: the substrate and enzyme should fit like a puzzle piece.

• A

• B

• C

• D

Open Ended

**Below is a diagram of an enzyme interacting with a substrate.

What do we call the part labeled A?

Open Ended

What do we call the part labeled B

Poll

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