Energy for Life

What is energy?

• moving energy

• stored energy

• renewable energy

• The ability to do work.

What kind of energy is in a person climbing a ladder?

• Potential

• Kinetic

• Both

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What type of potential energy provides the energy needed to burn wood?

• Nuclear

• Chemical

• Thermal

• Elastic

Which of these macromolecules are a source of energy?

• carbohydrates and lipids

• carbohydrates and nucleic acids

• proteins and DNA

• lipids and enzymes

Tags

NGSS.MS-LS1-7

Neurons are cells of the nervous system. As part of its normal function, a neuron pumps sodium ions (Na⁺) out of the cell and potassium ions (K⁺) into the cell. Which statement describes the role of energy in this process?

• The process releases energy that is used to make ATP.

• The process releases energy in the form of heat.

• The process requires energy that is provided by the sodium and potassium ions.

• The process requires energy that is provided by ATP.

Answer explanation

The correct statement is that the process requires energy that is provided by ATP.

Tags

HS-LS2-4

What is the name of the energy carrying molecule?

• ATP

• Metabolism

• Producer

• Stimulus

Tags

NGSS.MS-LS1-7

Which would be the MOST useful next step for Chloe to develop the photosynthesis model further?

• Extend the lines for sunlight so that they pass through the autotroph.

• Represent a chemical reaction in the autotroph that produces high-energy carbohydrates.

• Represent a chemical reaction in the autotroph that produces high-energy proteins.

• Draw a circle to represent a heterotroph, and draw a line to connect it to the autotroph.

Answer explanation

The correct choice is to represent a chemical reaction in the autotroph that produces high-energy carbohydrates, as this step would further develop the photosynthesis model by showing the key process of energy production.

Tags

HS-LS1-5

Why do people need to eat carbohydrates?

• to provide energy for cell activities

• to build cell membranes

• to store long term energy that can be used later

• to catalyze reactions

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Starch, a type of carbohydrate, is found in foods like pasta, bread, and potatoes. Eating foods with starch provides your body with...

• a catalyst to break down substances

• a structure to store genetic information

• a short term energy source

• insulation

Tags

NGSS.MS-LS1-7

Why do people need to eat lipids?

• to provide energy for cellular activities

• to build strong hair, nails & muscles

• to store energy that can be used later

• to catalyze reactions