Biochem Lecture 1

This is Biochemistry Lecture 1, which introduces you to organic compounds, specifically carbohydrates.

Carbohydrates Quiz

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This is the 5-question quiz assessing your understanding of Biochem Lecture 1 (Honors Biochem Lecture 2).

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Question 1

Which of the following would be a proper analogy of a Monomer to a Polymer?

A	A building to its floors Hint: This is actually the opposite analogy. Remember, a Monomer is a single building block that makes up the Polymer (Many Monomers put together).
B	A brick to a house
C	A train to its cars Hint: This is actually the opposite analogy. Remember, a Monomer is a single building block that makes up the Polymer (Many Monomers put together).
D	A car to a highway Hint: Not quite. Even though these go together, a highway is not made out of cars.

Question 1 Explanation:

Yes! A monomer is a single building block, like a brick. Its Polymer would be many Monomers put together, like the many bricks of a house!

Question 2

Why do "low-carb" diets work to make people lose weight?

A	They force your body to use fats as energy.
B	Because carbs aren't good for you. Hint: Carbs are actually what your cells break down most efficiently for energy.
C	Because other foods give you more energy than carbs. Hint: Carbs are actually your #1 source of immediate energy.
D	They don't work. You won't lose weight. Hint: Actually, they do work, even though they hurt you in the long run.

Question 2 Explanation:

Fantastic! Because your cells breaks down carbs so efficiently, they will always break it down over fats. But, if you don't give your cells carbs, they have no choice but to break down fats, thus dropping your fat storage and weight.

Question 3

Why should people still be cautious about these "low-carb" diets?

A	Your body is working much harder to use fat as energy, which wears down your cells. Hint: This is absolutely true, but look at some of the other choices, as well.
B	Using fats as energy has a high conversion rate; your body works harder for less energy. Hint: This is absolutely true, but look at some of the other choices, as well.
C	Low carb means high fat and protein, which can lead to higher cholesterol and blood pressure. Hint: This is absolutely true, but look at some of the other choices, as well.
D	All of the above

Question 3 Explanation:

Excellent! Although these low-carb diets may work in the short term, it takes quite a toll on your body and could lead to significant future health problems.

Question 4

If you were running a marathon in 24 hours, which of the following foods should you eat?

A	Fresh fruit Hint: Although this is very healthy, fruits are high in fructose, a monosaccharide, which will typically be all used up by the time the marathon begins.
B	Candy Hint: Candy is high in table sugar; sucrose. Even though sucrose is a disaccharide, it will still be used up by the time the marathon begins.
C	Salad Hint: Although this is a healthy choice, most of the ingredients in salads contain glucose, a monosaccharide, that will typically be all used up by the time the marathon begins.
D	Pasta

Question 4 Explanation:

Great! Although this seems like the heaviest choice, pasta is made of starches, or polysaccharides. Since monosaccharides are broken down before polysaccharides, you'll typically still have the energy reserves available from a pasta meal 24 hours before.

Question 5

Which of the following creates monosaccharides out of polysaccharides?

A	Dehydration Lysis Hint: This is not a real thing. Sorry to mess you up.
B	Dehydration Synthesis Hint: Although this is a real process, dehydration synthesis combines monosaccharides to make a polysaccharide, not the other way around.
C	Hydrosynthesis Hint: This is not a real thing. Sorry to mess you up.
D	Hydrolysis

Question 5 Explanation:

Super! Hydrolysis literally means to add water in order to separate. Through hydrolysis, your body will break down a starch into its monosaccharides.

There are 5 questions to complete.

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