Macromolecules/Biochemistry Assessment

Last updated almost 7 years ago

31 questions

1

6

1

3

2

12

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Macromolecules/Biochemistry Assessment

Last updated almost 7 years ago

31 questions

1

Use the following graph to answer #19 below:

1

Use this description to answer #21-25:

In class, we did an enzyme lab in which we added hydrogen peroxide, which breaks down cells, to potatoes and observed how the enzyme (A) peroxidase breaks down H₂O₂ into water and oxygen gas.

We exposed four slices of potatoes to (B) four different conditions: (C) room temperature, freezing, (D) soaking in an acid, and high heat (cooking).

Then we added (E) hydrogen peroxide.

Using what you learned from this lab, answer the following questions.

1

6

Complete the following chart on the major categories of organic macromolecules:

1

Molecules with an "ose" ending are classified as which type of organic macromolecule?

1

What is the name of the protein which speeds up a chemical reaction without being used up in the reaction?

3

Label the parts of this diagram showing the catalyzed reaction breaking down hydrogen peroxide into water and oxygen using the terms (A) enzyme, (B) substrate, and (C) products.

2

Label the following diagrammes as CARBOHYDRATE or LIPID.

12

I. Label the following parts of the digestive system. (8pts)II. Circle the organ name where most absorption of nutrients takes place. (1pt) III. Underline TWO organ names where mechanical digestion takes place. (2pts) IV. Star the organ name where most water absorption takes place. (1pt)

Fats, oils, and waxes are all:

Lipids

Carbohydrates

Proteins

Nucleic Acids

Which statement describes carbohydrates, lipids, and proteins?

They are used to store genetic information.

They are complex molecules made from smaller molecules.

They are used to assemble larger inorganic materials.

They are simple molecules used as energy sources.

Which of the following macromolecules is a prominent part of animal tissues that forms cell membranes and functions in insulation and long-term energy storage?

Carbohydrates

Lipids

Proteins

Nucleic Acids

Both lipids and carbohydrates are important in animal cells because both:

Store energy

Contain nitrogen

Form cell walls

Provide information

What are the basic building blocks of proteins?

Nucleic bonds

Peptide bonds

Amino acids

Glycerol and fatty acids

The monomers that make up carbohydrates are:

Monosaccharides

Amino acids

Nucleotides

Proteins

Which of the following is a good source of carbohydrates?

Butter

Eggs

Bread

Meat

Which of the following is a good source of proteins?

Oils

Sugars

Bread

Meat

The main source of energy for living things comes from:

Glucose

Proteins

Nucleotides

Water

Which of the following macromolecules are hydrophobic and don’t dissolve in water?

Carbohydrates

Lipids

Proteins

Nucleic Acids

Which of the following is true of polymers?

They are made of monomers.

They are made of repeating building blocks.

They are larger molecules.

All of the above are true.

Proteins are used for:

Primary energy source

Building structures like muscle, hair, and nails

Controlling heredity

Insulation

Various enzymes in our bodies are:

Lipids

Carbohydrates

Nucleotides

Proteins

Enzymes only work with specific substrates because each enzyme:

Has an active site which only fits substrates with a particular shape.

Can only make ionic bonds.

Cannot change shape.

Becomes denatured when it is heated.

Structural changes in an enzyme can affect its ability to function correctly. This denaturation can occur as a result of _______________.

Extreme temperature change

Change in pH

Addition of substrates

Both A and B are correct

From entry to exit, which is the correct order of the structures food passes through in the digestive system?

Mouth, stomach, small intestine, large intestine, esophagus, rectum

Mouth, esophagus, stomach, small intestine, large intestine, rectum

Mouth, esophagus, small intestine, large intestine, stomach, rectum

Mouth, stomach, esophagus, small intestine, large intestine, rectum

Enzymes with an optimal pH of 3 would most likely be found in the ___________.

Salivary gland

Stomach

Large intestine

Small intestine

Food is pushed through the digestive system by muscle contractions known as ________________.

Peristalsis

Flex

Contractase

Symbiosis

Use the following graph to answer #19 below:

What is the optimal temperature for this enzyme?

20℃

32℃

45℃

60℃

The four most common elements in organisms are:

Oxygen, Nitrogen, Carbon, Hydrogen

Nitrogen, Hydrogen, Phosphorus, Calcium

Calcium, Zinc, Oxygen, Lipase

Glucose, Sucrose, Maltose, Galactose

Use this description to answer #21-25:

In class, we did an enzyme lab in which we added hydrogen peroxide, which breaks down cells, to potatoes and observed how the enzyme (A) peroxidase breaks down H₂O₂ into water and oxygen gas.

We exposed four slices of potatoes to (B) four different conditions: (C) room temperature, freezing, (D) soaking in an acid, and high heat (cooking).

Then we added (E) hydrogen peroxide.

Using what you learned from this lab, answer the following questions.

Which letter indicates the independent variable (IV) of this experiment?

What letter indicates the enzyme?

What letter indicates the substrate?

Under which condition would you expect the enzyme to be denatured?

Under which condition would you expect the rate of reaction to be the fastest?