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?
Both lipids and carbohydrates are important in animal cells because both:
Form cell walls
What are the basic building blocks of proteins?
Glycerol and fatty acids
The monomers that make up carbohydrates are:
Which of the following is a good source of carbohydrates?
Which of the following is a good source of proteins?
The main source of energy for living things comes from:
Which of the following macromolecules are hydrophobic and don’t dissolve in
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
Various enzymes in our bodies are:
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 ___________.
Food is pushed through the digestive system by muscle contractions known as
Use the following graph to answer #19 below:
What is the optimal temperature for this enzyme?
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?
Complete the following chart on the major categories of organic macromolecules:
Molecules with an "ose" ending are classified as which type of organic
What is the name of the protein which speeds up a chemical reaction without
being used up in the reaction?
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.
Label the following diagrammes as CARBOHYDRATE or LIPID.
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)
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