(C8) Learning Set #1 Quiz Prep

​Learning Set #1 Quiz Prep

C8 Unit

Multiple Choice

Which of the following DECREASES when we exercise?

• heart rate

• oxygen inhalation

• carbon dioxide exhalation

• skin temperature

1. What happens to the human body when we exercise?

Subject | Subject

Some text here about the topic of discussion

Multiple Select

2. What 3 things does the human body need for survival?

• clothing

• water

• food

• oxygen

Multiple Choice

What is an independent variable?

• The variable changed by the scientist.

• What the scientist measures.

• A standard of comparison in an experiment.

• The variables that must be kept the same.

Multiple Choice

What is a dependent variable?

• The variable changed by the scientist.

• What the scientist measures.

• A standard of comparison in an experiment.

• The variables that must be kept the same.

Multiple Choice

What is a control group?

• The variable changed by the scientist.

• What the scientist measures.

• A standard of comparison in an experiment.

• The variables that must be kept the same.

​Maggie read that some plants grow better if the soil is acidic. Maggie decides to test if the plants she has will grow better when acid (vinegar) is added to the soil. She puts potting soil in two planting containers and transplants two of her geraniums that seem about the same size into the pots. She puts the pots in the same location so that they both get the same sunlight each day, are at the same temperature and she makes sure they get the same amount of water. However, Maggie puts a tablespoon of vinegar in the water she gives to one of the plants. She measures the growth of the plants every week for five weeks and records the results.

3. What is the independent variable?

4. What is the depende​nt variable?

5. What is the control group?​

6. What factors were kept constant in the experiment?​

Multiple Select

What three things are part of the scientific definition of food?

• Anything that has calories

• Anything that can react with oxygen to produce ATP

• Anything that is solid

• Anything that can be used as building blocks for the body

Multiple Choice

9. TRUE or FALSE: Vitamins and minerals are NOT considered food.

• TRUE

• FALSE

Some text here about the topic of discussion

10. When we watched the videos of the burning marshmallow, chip, and oil, what was being measured?

​

The amount of energy being given off by burning food with different amount of carbohydrates, protein, and lipids.

​

Chemical energy in food transferred to light energy and thermal energy​

Multiple Select

11. Which are the REACTANTS in this chemical reaction that happens in our body to provide us with energy?

• 6O₂

• C₆H₁₂O₆

• 6CO₂

• 6H₂O

Multiple Choice

In which organelle does this reaction take place?

• nucleus

• mitochondria

• lysosome

• ribosome

This is a chemical reaction because new compounds with different properties are formed.

6O₂ + C₆H₁₂O₆ --> 6CO₂ + 6H₂O + ATP

Multiple Choice

12. Which food molecule will provide us with the MOST energy?

• Carbohydrates

• Proteins

• Lipids (fats)

Multiple Choice

13. Which food molecule will provide us with the QUICKEST energy?

• Carbohydrates

• Proteins

• Lipids (fats)

13. Provide us with the QUICKEST form of energy because carbs (glucose) are small enough to get into the cells through the membrane without having to be broken down.

Carbohydrates

12. Provide us with the MOST energy because fats have the greatest number of bonds to break.

Lipids (fats)

Some text here about the topic of discussion

Multiple Select

14. Which elements do CARBS, PROTEINS, and FATS all have in common?

• Carbon

• Hydrogen

• Oxygen

• Nitrogen

Multiple Choice

15. Which biomolecule has an additional element not found in the other two?

• Carbohydrates

• Proteins

• Fats

Multiple Choice

15. What additional element is found in PROTEINS?

• Carbon

• Hydrogen

• Oxygen

• Nitrogen

Multiple Choice

16. Which biomolecule has the monomer / subunit called SACCHARIDE?

• Carbohydrates

• Proteins

• Lipids (fats)

Multiple Choice

16. Which biomolecule has the monomer / subunit called AMINO ACID?

• Carbohydrates

• Proteins

• Lipids (fats)

Multiple Choice

What term is defined as having ONE type of atom throughout?

• Compound

• Element

• Mixture

• Substance

Multiple Choice

What term is defined as having two or more different types of atoms chemically bonded?

• Compound

• Element

• Mixture

• Substance

CO₂

​

Compound

​

C - 2

O - 4​

​

Total # of atoms: 6

C₂H₆

​

Compound

​

C - 2

H - 6​

​

Total # of atoms: 8

NH₃

​

Compound

​

N - 1

H - 3

​

Total # of atoms: 4​

​ Mg + HCl --> MgCl₂ + H₂

​ AgS₂ --> Ag + S₄