Energy & Enzymes!

Energy & Enzymes!

Assessment

Interactive Video

Biology

12th Grade

Practice Problem

Hard

Created by

Vanessa Dreessen

FREE Resource

7 questions

Show all answers

1.

CATEGORIZE QUESTION

3 mins • 1 pt

Do you remember your Functional Groups?

Groups:

(a) Aldehyde

,

(b) Amino

,

(c) Keto

,

(d) Carboxyl

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2.

CATEGORIZE QUESTION

3 mins • 1 pt

Match each to its proper category

Groups:

(a) Metabolism

,

(b) Anabolism

,

(c) Catabolism

photosynthesis

energy (E) used

managing material & energy resources of the cell

totality of an organism’s chemical processes

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degradative

aerobic cellular respiration

energy (E) released

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building

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3.

CATEGORIZE QUESTION

3 mins • 1 pt

Match each to its Energy form

Groups:

(a) Potential Energy

,

(b) Kinetic Energy

nuclear
elastic
electromagnetic
magnetic
wave

motion

vibrational
thermal
translational
gravitational

stored

rotational
thermal
hydraulic
chemical
sound

4.

CATEGORIZE QUESTION

3 mins • 1 pt

Laws of Thermodynamics

Groups:

(a) 1st Law

,

(b) 2nd Law

energy can change forms but the total amount remains the same

energy transformations do not create or eliminate energy

the second law of thermodynamics states that natural processes tend to move towards a state of disorder

the first law of thermodynamics

the entropy of the universe tends to increase
the total entropy of an isolated system can never decrease
heat cannot spontaneously flow from a colder body to a hotter body
it is impossible to convert all the energy in a system into work

energy cannot be created or destroyed

in any energy transfer, there will always be some energy that is lost as heat
the efficiency of a heat engine is always less than 100%

in a closed system, energy is conserved

energy transformations are not 100% efficient

the principle of conservation of energy

work done on a system results in a change in energy

the total energy of an isolated system remains constant

5.

CATEGORIZE QUESTION

3 mins • 1 pt

Match each portion of the Gibbs Free Energy equation to its descriptions
ΔG = ΔH - TΔS

Groups:

(a) ΔG

,

(b) ΔH

,

(c) ΔS

,

(d) T

Kelvin

Positive ΔS indicates an increase in disorder

Negative value indicates a spontaneous reaction

Gibbs free energy change during a reaction

Third law of thermodynamics states that entropy approaches zero as temperature approaches absolute zero

Positive value indicates a nonspontaneous reaction

C + 273

Heat content of a system

H(products) - H(reactants)

portion of system’s E that can perform work (at a constant T)

Enthalpy

Measured at constant pressure

Measure of disorder or randomness in a system

Entropy increases in spontaneous processes

Entropy

Used to predict equilibrium position

Answer explanation

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6.

CATEGORIZE QUESTION

3 mins • 1 pt

Match the descriptions/images to their reaction type

Groups:

(a) Endergonic

,

(b) Exergonic

energy input required

potential energy increases

energy released

energy absorbed/stored

breaking down complex molecules

non-spontaneous reactions

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energy output

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anabolic

potential energy decreases

photosynthesis

building complex molecules

catabolic

spontaneous reactions

cellular respiration

7.

OPEN ENDED QUESTION

3 mins • Ungraded

Summarize what you now know about metabolic pathways, energy, entropy, and enzymes.
How are all of these concepts connected?

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