Bio 2 Energy

Kinetic energy differs from potential energy in that

• kinetic energy is stored energy that has the potential to do work and chemical energy is the energy of movement

• kinetic energy depends on the movement of atoms, whereas chemical energy depends on the movement of molecules

• kinetic energy can be converted into various forms of energy, whereas chemical energy can only be converted to heat

• kinetic energy is the energy of a moving object, whereas chemical energy is the potential energy of molecules

According to ____ energy cannot be created or destroyed.

• Aristotle’s first principle

• 1st law of thermodynamics

• second law of thermodynamics

• Einstein’s law of relativity

Which of the following energy transfers is/are possible in living systems?

• light energy to chemical energy

• chemical to kinetic

• light to potential

• all of these

Living systems

• violate the first law of thermodynamics

• violate the second law of thermodynamics

• decrease their entropy while increasing the entropy of the universe

• both a and b

Which of the following processes is endergonic?

• burning wood

• release heat from glucose breakdown

• synthesis of glucose

• cellular respiration

What is the basic difference between endergonic and exergonic reactions?

• exergonic involve ionic bonds, endergonic involve covalent

• exergonic involve breaking bonds, endergonic involve forming bonds

• exergonic release energy, endergonic absorb energy

• exergonic involve forming bonds, endergonic involve breaking bonds

Which of the following concerning energy is NOT true?

• A gasoline engine converts chemical energy into kinetic energy

• living systems convert heat energy into chemical energy in order to reduce entropy

• energy transformations in cells release heat energy

• Fireflies take potential energy in food and convert it into kinetic energy in the form of heat and light

The transfer of a phosphate group to a molecule or compound is called

• carboxylation

• ionization

• phosphorylation

• hydrogenation

Anything that prevents ATP formation will

• result in cell death

• force the cell to rely on lipids for energy

• have no effect on the cell

• force the cell to rely on ADP for energy

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

When a cell uses chemical energy to perform work, it couples a(n) ___ reaction with a(n) __reaction

• exergonic, endergonic

• endergonic, exergonic

• exergonic, spontaneous

• endergonic, spontaneous