and answers verified to pass
2025/2026
Energy - correct answer ✔the capacity for work
As biologic work... - correct answer ✔increases, energy transfer increases
Biologic work - correct answer ✔what occurs in the body as utilized ATP goes one way or another;
expressed in mechanical units; Emerges only when ... - correct answer ✔Biologic work; a change takes
place
First Law of Thermodynamics - correct answer ✔Energy cannot be created or destroyed, but only
transforms from one form to another without being depleted; The body does not produce, consume, or
use up energy; instead, it transforms energy from one state into another as physiologic systems undergo
continual change
the first law of thermodynamics is ... - correct answer ✔An expression of the conservation of energy
principle
First Law of Thermodynamics example - correct answer ✔converting energy as glucose to energy as
ATP; when our cells use the ATP it is transferring the energy into another form (heat being let off)
System total energy - correct answer ✔System total energy = Potential energy + Kinetic energy
Potential energy - correct answer ✔relates to structure or position
,Potential energy example - correct answer ✔Water at the top of dam represents trapped potential
energy(energy that is within the system but not currently being used) (energy of position)
Water changes to kinetic energy as it moves over the dam
Water at the bottom of the dam represents lower potential energy
Kinetic energy - correct answer ✔energy of motion/energy used within a system with release of heat
Kinetic energy example - correct answer ✔ATP being used and released as heat
... in one substance directly transfers to other substances to ... - correct answer ✔Bound energy;
increase their potential energy
bound energy example - correct answer ✔glucose transferred to glycolysis if not used up
Specific building-block atoms of carbon, hydrogen, oxygen, and nitrogen become activated and join
other atoms and molecules to ... - correct answer ✔synthesize important biologic compounds and
tissues
the amount of ... we might have is determined by the amount of ... within a molecule and its specific
arrangement - correct answer ✔potential energy; carbon, hydrogen, nitrogen ,and oxygen
Some newly created compounds provide ...; examples include ... that encloses each cell - correct answer
✔structure; bone or the bilayer lipid-containing plasma membrane
exergonic - correct answer ✔physical or chemical process releases energy (from a substrate) to
surroundings ("downhill" process) with free energy decline
,exergonic example - correct answer ✔using any of our metabolic systems; using carbohydrates in
glycolysis, extracting energy from glucose molecule: glucose goes from six carbon molecule to two
separate three carbon molecules: taking large molecule and breaking it down RELEASE ENERGY
Endergonic - correct answer ✔Chemical reactions, store or absorb energy (requires energy) ("uphill"
process) with free energy increase for biologic work
endergonic reaction examples - correct answer ✔body transfers energy from smaller
molecule/reactant to larger molecule/product (combine individual fatty acids with glycerol to form
triglycerides to store as fat)
Storing fat - converting glucose to glycogen
Individual amino acids in the proteins
Examples of Energy Conversion - correct answer ✔Photosynthesis, respiration
Photosynthesis - correct answer ✔Endergonic process:
plants transfer solar/sun energy to potential energy in carbohydrates, lipids, and proteins in the plant
Respiration - correct answer ✔Exergonic process:
stored energy in plants couples to chemical compounds for biologic work
combine glucose molecule with oxygen to release energy and left with two smaller molecules
Use calories(specifically kilocalories) to determine ... - correct answer ✔our energy release from the
body
Calorie/Kilocalorie
Can be calculated from ... - correct answer ✔heat production;
, In humans, energy is expressed in ..., where... - correct answer ✔kilocalories (kcal); 1 kcal equals 1,000
cal.
The numbers are actually ... on the back of the ...
So we made up our own ..., which is essentially just ... - correct answer ✔kilocalories; food label; capital
C Calorie; one kilocalorie
1 calorie =
1 kilocalorie is - correct answer ✔heat energy needed to raise 1 g of water from 14.5°C to 15.5°C. (1
degree)
heat energy needed to rase 1000 grams of water from 14.5°C to 15.5°C. (1 degree)
Energy in biological systems is measured in ... - correct answer ✔calories
Three forms of biologic work - correct answer ✔chemical(metabolism), mechanical(exercise), transport
chemical(metabolism), mechanical(exercise), transport - correct answer ✔Three forms of biologic work
Biological work: Chemical
Picture: - correct answer ✔Biosynthesis of cellular molecules
Done by different reactions within the body
Biological work: Chemical example - correct answer ✔adding energy to glucose and creating glycogen
adding energy to fatty acids in glycerol and making triglycerides
adding energy to amino acids and creating proteins
Biological work: Mechanical - correct answer ✔Muscle contraction