BIOLOGY
Biology 2051 Quiz 6.docx

Biology 2051 Quiz 6.docx - LEARNING OUTCOMES Chapter 6...

Info icon This preview shows pages 1–4. Sign up to view the full content.

LEARNING OUTCOMES Chapter 6 Sections 6.1, 6.2, 6.3 Define the following and give examples Definition Example Energy Ability to promote change or do work Has 2 forms: kinetic and potential Has 5 types that are important to biology Kinetic Energy Energy associated with movement Inherent energy of particles Swinging a baseball bat Potential Energy The stored energy that a substance possesses due to its structure or location Energy stored as a chemical bond or through an objects position Bow that is ready to fire an arrow Waterfall at the top Chemical Equilibrium A state in a chemical reaction in which the rate of formation of products equals the rate of formation of reactants Exothermic Chemical reaction that releases energy in the form of heat Explosions, rusting iron, nuclear fission and fusion Endothermic Chemical reaction that absorbs heat energy from its surroundings Photosynthesis, melting ice Induced Fit Occurs when a substrate(s) binds to an enzyme and the enzyme undergoes a conformational change that causes the substrate(s) to bind more tightly to the enzyme. Lowers activation energy Denaturation Process of modifying the molecular structure of a protein, enzyme, or DNA Involves the breaking of many of the weak linkages or bonds (hydrogen bonds) within a protein or DNA that are responsible for the highly ordered structure in its natural state Can be caused by extreme temperatures, wrong pH levels,
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

etc. Allosteric regulation When a molecule binds a site other than the active site and changes the behavior of the enzyme by changing its conformation Acts like a dimmer switch that can turn a light on making it brighter or dimmer Cooperativity Substrate upon which an enzyme acts to form a product Cofactor Enzyme partner group that increases the rate of reaction required for enzyme function Not proteins, but are help proteins Metal ions like iron and zinc Coenzyme Specific type of cofactor Organic molecules that bind to enzymes and help them function Most vitamins Feedback inhibition A form of regulation in which the product of a metabolic pathway inhibits an enzyme that acts early in the pathway, thus preventing the overaccumulation of the product. Production of ATP – producing too much ATP results in energy loss and glucose depletion could result in trouble where food is scarce Production of Amino Acids – can be overproduced so feedback regulation ensures only the amino acids that are needed are produced Production of cholesterol List the different types of energy important to biological life, State why each is important.
Image of page 2
Energy Type Description Reason of Importance Biological Example Light Light is a form of electromagnetic radiation that is visible to the eye Energy of light is packaged in photons Affects water temperature, biological processes (such as the relationship between predators and prey), plant photosynthesis and growth During photosynthesis, light energy is captured by pigments in chloroplasts.
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern