2.1 - Organic molecules & 3.1 - The digestive system quiz

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2.1 - Organic molecules

1. What is an organic compound?

A carbon-based compound found in all living things

An element, such as hydrogen

A combination of metals

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2. Explain in at least 2 sentences why life could not exist without organic compounds

3. What is a carbohydrate?

An organic compound that makes up muscles

An organic compound that makes up DNA

An organic compound made of sugars that is used for energy

An organic compound that contains instructions for building proteins

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4. Explain in at least 2 sentences the function of carbohydrates (simple or complex), and give the name of a simple sugar that humans uses for immediate energy.

5. What is a lipid?

An organic compound such as fat or oil

An organic compound made of sugars that is used for energy

An organic compound that contains instructions for building proteins

An organic compound made up of small molecules called amino acids

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6. Explain in at least 2 sentences the function of lipids in organisms

7. What is a protein?

An organic compound such as fat or oil

An organic compound made of sugars that is used for energy

An organic compound that contains instructions for building proteins

An organic compound made up of small molecules called amino acids

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8. Explain in at least 2 sentences the function of proteins in organisms

3.1 - The digestive system

1) The gastrointestinal tract is a long tube that includes

the mouth, stomach, intestines and anus.

the mouth, stomach, intestines, liver and anus.

the mouth, stomach, intestines, liver, gallbladder and anus.

the mouth, stomach, intestines, liver, gallbladder, pancreas and anus.

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2) What is the main goal of digestion?

To break down food into smaller chunks

To create enzymes to aid digestion

To absorb carbs, lipids, proteins, and micronutrients into the blood stream

To move foods using peristalsis

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3) Which of the following statements most accurately compares mechanical vs. chemical digestion

Mechanical digestion is the physical breakdown of food, and chemical digestion is the chemical breakdown of food molecules.

Chemical digestion is the physical breakdown of food, and mechanical digestion is the chemical breakdown of food molecules.

Chemical digestion is the physical breakdown of food, and mechanical digestion is the mechanical breakdown of food molecules.

Mechanical digestion occurs in your mouth, and chemical digestion occurs in your stomach.

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4) In your mouth,

pepsin begins the acidic digestion of proteins.

amylase begins the chemical digestion of carbohydrates.

amylase begins the chemical digestion of fats.

amylase, pepsin, trypsin, and other enzymes start to break down food.

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5) The stomach

digests food both mechanically and chemically.

contains pepsin, which chemically digests protein.

has an acidic environment, which kills bacteria in food and is needed for the stomach enzymes to function.

all of the above

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6) What is the most important role of the small intestine?

Nearly all nutrients from food are absorbed into the blood via the small intestine

Excess water is absorbed from food in the small intestine

Food is mechanically broken down in the small intestine

An acidic environment for enzymes is created in the small intestine

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7) What is the most important role of the large intestine?

To host helpful bacteria that create vitamins and aid in digestion

To mechanically process food particles

To excrete many enzymes, including amylase

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8) Macro-nutrients:

include carbohydrates, proteins, lipids, and water.

Include vitamins like B12

Include chemical elements like calcium and potassium.

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9) Absorption is the process in which nutrients pass into the bloodstream, where they can circulate throughout the body.

True

False

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10) Imagine you just took a bite of a delicious apple (mmmmm... apples...). In at least 5 sentences, explain what will happen to the apple chunk as it passes through the digestive system of your body. Be sure to include the terms: mechanical digestion, chemical digestion, enzyme, amylase, and absorption.

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