100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Biology 121 Exam 1 Practice Questions and Correct Answers CA$12.98   Add to cart
Quickly navigate to
Preview
  2.  
  3. BIO 121
  4.  
  5. BIO 121

Exam (elaborations)

Biology 121 Exam 1 Practice Questions and Correct Answers
 6 views  0 purchase
  • Course
  • BIO 121
  • Institution
  • BIO 121

Metabolism the entirety of an organism's chemical reactions Metabolic pathway starts with starting molecule, reaction occurs with catalyst to create new molecule, happens more until end product is made Catabolic pathway releases energy by breaking down complex molecules into simpler compounds An...

[Show more]

Preview 2 out of 10  pages

Document information

  • August 13, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • biology 121 exam 1 practice questions and correct
  • metabolism the entirety of an organisms chemical
  • metabolic pathway starts with starting molecule

Written for

  • BIO 121
  • BIO 121

Seller

avatar-seller
twishfrancis

Reviews received

Content preview

Biology 121 Exam 1 Practice Questions
and Correct Answers
Metabolism ✅the entirety of an organism's chemical reactions

Metabolic pathway ✅starts with starting molecule, reaction occurs with catalyst to
create new molecule, happens more until end product is made

Catabolic pathway ✅releases energy by breaking down complex molecules into
simpler compounds

Anabolic pathway ✅consume energy to build complex molecules from simpler ones,
biosynthetic pathway

Energy ✅the capacity to do work

Kinetic energy ✅relative motion of objects, energy of motion

Thermal energy ✅kinetic energy, random movement of molecules, transfer of this from
one object to another is heat

Potential energy ✅not moving energy but still possesses energy, like water behind a
dam, heat and light

Chemical energy ✅potential energy available for release in a chemical reaction,
potential energy

First law of thermodynamics ✅energy of the universe is constant, energy cannot be
created or destroyed

Usable energy ✅Energy that can easily be transformed to other kinds of energy to
serve a useful purpose

Second law of thermodynamics ✅energy transfer or transformation increases the
entropy of the universe

Entropy ✅a measure of molecular disorder or randomness

Spontaneous ✅energetically favorable, increases entropy by itself, no input of energy
is required, negative ΔG, doesn't necessarily happen fast

, Free energy ✅the portion of a system's energy that can perform work when
temperature and pressure are uniform throughout the system

Gibbs free energy equation ✅ΔG = ΔH(enthalpy) - TΔS(temp in k and entropy)

Change in free energy ✅∆G= Gfinal-Ginitial

Equilibrium ✅state of maximum stability, the body can't be in this state

Exergonic ✅energy outward, net release of free energy, negative ΔG, spontaneous,
more stable, less work capacity

Endergonic ✅energy inward, absorbs energy, stores free energy, ΔG is positive, not
spontaneous, less stable, more work capacity

Chemical work ✅the pushing of endergonic reactions that would not occur
spontaneously, like making polymers from monomers

Transport work ✅moving substances across membranes against direction of
spontaneous movement

Mechanical work ✅beating of cilia, contraction of muscle cells, movement of
chromosomes during cellular reproduction

Energy coupling ✅The use of an exergonic process to drive an endergonic one

Hydrolysis ✅reaction that breaks phosphate group bonds in ATP. Water is added to
ATP and breaks one P group off to make ADP

Phosphorylated intermediate ✅the key to coupling exergonic and endergonic
reactions, P group from ATP transfers to another molecule

ATP synthesis ✅anabolic, requires energy, endergonic

ATP hydrolysis ✅catabolic, releases energy, exergonic

Enzymes ✅act as catalysts to speed the rate of reactions in our bodies, absorb energy
to decrease activation energy

Activation energy ✅the initial investment of energy for starting a reaction, the energy
required to contort the reactant molecules so the bonds can break

Speed up reactions ✅ribosomes, temperature, and heat

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller twishfrancis. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$12.98. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

75323 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$12.98
  • (0)
  Add to cart