SBI4U 3.1 Metabolism and Energy

____________ can be defined the ability to do work

• energy

• power

Tags

NGSS.HS-PS3-2

T/F - Metabolism the sum of all anabolic and catabolic processes/reactions in a cell or organism

• True

• False

Tags

NGSS.HS-LS2-5

T/F - All forms of energy can be classified as kinetic energy or potential energy.

• True

• False

Tags

NGSS.HS-PS3-2

T/F - Kinetic energy is the energy possessed by moving objects, such as raindrops falling through the air, the heart muscle contracting during a heartbeat, and chromosomes moving along spindle fibres during mitosis.

• True

• False

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-2

Which of the following statements about "Kinetic energy" is INCORRECT?

• It can be defined as the energy possessed by moving objects.

• Kinetic energy comes in many forms.

• Examples include:

  thermal energy or heat (random motion of particles)

  mechanical energy (coordinated motion of particles)

• None of the other 4 statements are INCORRECT.

• Examples include;

  electrical energy (motion of charged particles)

  electromagnetic energy (motion of light)

Which of the following statements about "Potential energy" are INCORRECT?

• It can be defined as stored energy.

• An object possesses potential energy because of its position within an attractive or repulsive force field.

• Gravitational potential energy is the attraction between two objects.

• None of the other 4 statements are INCORRECT.

• Chemical potential energy is the attraction between electrons and protons in a chemical bond.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-2

T/F - When work is done, energy is transferred from one body or place to another.

• True

• False

Tags

NGSS.HS-PS3-4

Which of the following statements about the "The First Law of Thermodynamics" is INCORRECT?

• The total amount of energy in the universe is constant.

• Energy cannot be created or destroyed but only converted from one form into another.

• If an object or process gains an amount of energy, it does so at the expense of a loss in energy somewhere else in the universe.

• None of the other 3 statements are INCORRECT.

Tags

NGSS.HS-PS3-2

In an endergonic reaction the products have

• more energy than the reactants

• less energy than the reactants

• the same energy as the reactants

• no energy

Tags

NGSS.HS-PS1-4

In an exergonic reaction the products have

• more energy than the reactants

• the same energy as the reactants

• less energy than the reactants

• no energy

Tags

NGSS.HS-PS1-4