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Exam 3: The Molecules of Life

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Question 1

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Animals store carbohydrates as ________.

A) cellulose
B) glycogen
C) starch
D) maltose

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Question 2

Multiple Choice

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DNA nucleotides include ________.

A) uracil, guanine, adenine, and cytosine
B) thymine, guanine, adenine, and cytosine
C) thymine, uracil, adenine, and cytosine
D) thymine, guanine, adenine, and uracil

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B

Question 3

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Amino acids include a side group as well as ________.

Nucleic acids are polymers of ________ monomers.

A DNA molecule has the sequence AGTTCAACT.The equivalent RNA molecule would have the sequence ________.

In the following equation,lactose is a ________. galactose + glucose → lactose + water

Please read the following scenario to answer the following questions. Cooking oils, such as olive oil, are largely made up of unsaturated fats. If you have ever heated cooking oil in a pan, you might have noticed that eventually the oil begins to smoke. The temperature when this occurs is called the "smoke point." At the smoke point, the fatty acids and glycerol molecules that make up the unsaturated fats in the oil begin to break down and form smoke. Different oils have different smoke points, and these smoke points depend on the molecular composition of the oils. Below is a table with data for four different types of cooking oils, including their smoke points (values are for 1 tablespoon each [15 ml]) . -Which of the following statements about the data in the table is TRUE?

Which of the following is a health effect of a diet high in saturated fats?

Please read the following scenario to answer the following questions. While shopping, you settle on two types of cookies. The nutritional label for the chocolate mint cookies lists 5 grams of saturated fat, 0 grams of trans fat, 22 grams of carbohydrates, and 11 grams of protein per serving. The nutritional label for the peanut butter cookies lists 0 grams of saturated fat, 5 grams of trans fat, 26 grams of carbohydrates, and 4 grams of protein per serving. -Which cookies are less healthy?

People with lactose intolerance do not have enough ________.

________ is a steroid.

Which of the following is TRUE with regard to a DNA molecule?

The ability to tolerate lactose throughout life most likely arose in ________.

What name is given to the following reaction? glycerol + 3 fatty acids → triglyceride + 3 water molecules

If one strand of a DNA double helix has the sequence AGTACTG,what will be the sequence of the other strand?

The following molecule is best described as a(n) ________. CH₃-CH₂-CH₂-CH₂

A glycerol with three fatty acids attached is referred to as a ________.

Examine the two sugars in the following figure.How do these two sugars compare?

Proteins are polymers constructed from ________ monomers.

Please read the following scenario to answer the following questions. While shopping, you settle on two types of cookies. The nutritional label for the chocolate mint cookies lists 5 grams of saturated fat, 0 grams of trans fat, 22 grams of carbohydrates, and 11 grams of protein per serving. The nutritional label for the peanut butter cookies lists 0 grams of saturated fat, 5 grams of trans fat, 26 grams of carbohydrates, and 4 grams of protein per serving. -The manufacturer of the chocolate mint cookies changed the ingredients of its cookies.Each serving now has 1 gram of saturated fat (4 fewer grams) ,4 grams of trans fat (4 more grams) ,21 grams of carbohydrates (1 fewer gram) ,and 11 grams of protein (no change) .Do you think that the manufacturer made these cookies healthier?