Molecular Biology Quiz

Which is the primary source of energy for most cells in the body?

• sugar

• fat

• protein

• vitamins

Where do plants get the food they need for energy?

• They absorb it directly from the soil.

• They absorb it directly from the sun.

• They produce it during photosynthesis.

• They receive it from atmospheric gases.

A runner is preparing to run a long race. Which would provide the highest level of energy for the runner?

• vitamins

• carbohydrates

• minerals

• proteins

Why are digestion and respiration important to the body?

• They control the production of hormones in the body.

• They build muscle and bone that the body needs.

• They help provide the energy needed for body functions.

• They store food for the body.

Why is a healthy diet important?

• It prevents damage to essential vitamins.

• It maintains a constant temperature fluctuations.

• It supplies the body with the correct nutrients for growth and energy.

• It makes oxygen for all the cells in the body.

How would smoking tobacco most likely have a negative impact on the ability of an individual to succeed at physical activities?

• It decreases the ability to make decisions rapidly.

• It decreases the speed and power of muscle contractions.

• It decreases stamina and gas exchange in the body.

• It interferes with balance and coordination.

Which food provides the most energy for the body in the shortest amount of time?

• fruit

• milk

• bacon

• water

Why is protein an important part of a healthy diet?

• It is needed to change glucose to energy.

• It is needed to repair tissue.

• It is needed to store nutrients.

• It is needed to produce water.

Which molecule has a high calorie (energy) count and can cause you to store that excess energy as fat?

• starch

• fiber

• lipids

• sugar

Why is fiber an essential carbohydrate?

• It is just empty calories to help make you feel full.

• It helps your digestive system move food through your system to keep you "regular".

• It allows you to grow and repair your cells more rapidly.

• It helps your body conserve water on hot days.