8.L.5 Review

8.L.5 Review

Photosynthesis versus Cellular Respiration

• Photosynthesis is the process of using light energy to make food energy. This is done by producers such as plants and phytoplankton. It uses carbon dioxide, water and sunlight and makes food and oxygen.

• Cellular respiration is the process of breaking down food for cellular energy. It uses sugar and oxygen and creates energy and carbon dioxide.

Metabolism

• Metabolism is the set of chemical reactions involved in storing fuel (food) molecules and converting fuel (food) molecules into energy.

• In order for the body to use the fuel energy stored in food, the food must first be digested and combined with oxygen (oxidized).

three factors contribute to the overall metabolic rate of the body.

• The Basal Metabolic Rate (BMR) accounts for about 60% of all energy used by the body

• Daily physical activities such as walking and moving around account for another 30% of the energy used by the body.

• 10% of the energy used by the body is used to digest and process (oxidize) food.

Multiple Select

What do producers need for photosynthesis?

• sunlight

• carbon dioxide

• oxygen

• water

Multiple Choice

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 store food for the body

• They help provide the energy needed for body functions.

Multiple Choice

How are plant cells and human cells different?

• Human cells need food, but plant cells do not.

• Human cells need energy, but plant cells do not.

• Plant cells make their own food, but human cells do not.

• Plant cells make their own energy, but human cells do not.

The 3 macronutrients

• proteins- Help to grow and repair muscle tissue.

• carbohydrates- Used for the bodies MAIN source of energy.

• fats- Used to store energy.

Multiple Choice

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

• minerals

• carbohydrates

• proteins

• vitamins

Multiple Choice

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

• sugar

• fat

• protein

• vitamins

Multiple Choice

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

• potato

• milk

• meat

• fruit

Multiple Choice

Why is a healthy diet important?

• It maintains a constant body temperature.

• It prevents damage to internal organs.

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

• It supplies the body’s needs for growth and energy.

Multiple Choice

Why is protein an important part of a healthy diet?

• It is needed to change glucose to energy.

• It is needed to store nutrients.

• It is needed to repair tissue.

• It is needed to produce water.

Multiple Choice

Which would most likely contribute to better digestion and respiration?

• eating junk food

• frequent exercise

• playing video games

• regular visits to a doctor

Multiple Choice

When an organism oxidizes food, some of the energy is lost. Which best explains this loss of energy?

• Energy is released as heat.

• Energy is converted to waste

• Energy is stored for later use

• Energy is converted to chemical compounds

Multiple Choice

Crystal is trying to increase the protein in her diet. Which foods will best satisfy this nutritional need?

• peas, fish, milk, and beans

• apples, carrots, juice, and rice

• kiwi, lettuce, tea, and strawberries

• watermelon, spinach, coffee, and pasta

Multiple Choice

Which activity would supply the most oxygen to the body for digestion and respiration?

• sit-ups

• running

• stretching

• lifting weights

Multiple Choice

Which is most likely to promote the growth of animals?

• fiber

• water

• oxygen

• protein

Multiple Choice

Which is best defined by eating a proper amount of proteins, carbohydrates, and fats to help the body function properly?

• exercise

• lifestyle

• nutrition

• respiration

Multiple Choice

How does food provide energy?

• Food contains oxygen which cells convert into energy.

• Food contains fiber which breaks down quickly into energy.

• Food contains water which is used to store energy for later use.

• Food contains sugar which is converted into energy through cellular respiration

Multiple Choice

Which best explains why organisms need food?

• Food is the source of energy required for growth and repair of tissues.

• Food provides the raw materials for producers to produce more food.

• Food is the source of water needed to hydrate the surface of cells.

• Food provides the oxygen necessary for plant and animal survival