The green objects represent ________? Dashed line? Passive

The green objects represent ________? Dashed line? Passive or Active transport? Molecules in aqueous solution = solute Cell (or plasma) membrane Passive transport; Diffusion of solutes toward equilibrium Osmosis

Diffusion of water Towards equilibrium High concentration of water to low concentration of water Osmoregulation = controlling water balance internally in relation to the outside environment Isotonic: (iso = same) cell is in a solution of equal solute concentration

Hypotonic: (hypo = below) cell is in a solution of lower solutes Hypertonic: (hyper = above) cell is in a solution of higher solutes Purple objects represent ___? Transport proteins in plasma membrane Left side passive or active?

Passive transport; high concentration to low Active transport; against concentration gradient Right side passive or active

transport? Expend energy ATP Energy? Capacity to do work Kinetic E energy in motion E.g. muscle contractions, heat, light, active

transport Potential E stored energy E.g. object at rest atop hill, food, ATP Energy conversion; transform from one form to another Laws of E transformation 1st Law of thermodynamics

Energy conservation E can be transferred or transformed E cannot be created or destroyed e.g. sunlight to starch via photosynthesis Laws of E transformation 2nd Law of thermodynamics E escape or transfer during conversions e.g. heat released during muscle contractions is transferred to the environment Cells convert potential E to cellular E Organized starch or glucose

molecules to ATP E escape leads to disorder Entropy = amount of disorder or chaos in a system How to deal with Entropy & prevent total chaos? Energy input More E is required to replace the E that escapes

Plants absorb solar E (kinetic E) Animals eat food (potential E) chemical reactions in cells convert energy http://www.youtube.com/watch?v=5KIhDVLbMeY Two types of chemical reactions in regards to Energy flow Endergonic reactions & Exergonic reactions Endergonic reaction Net input of energy Increasing potential E

Building carborhydrates making bonds e.g. plants photosynthesizing Exergonic reaction Chemical rxn that releases energy Covalent bonds of reactants have more potential E than products Breaking down carbohydrates Potential E to ATP Breaking bonds

ATP powers cellular work Breaks bond via hydrolysis Phosphorylation Exergonic or Endergonic? e.g. transfer of phosphate to motor protein causes contraction (muscle cells, flagella movement)

Enzymes Proteins that change the rate of chemical reactions Many act as catalysts speed up reactions. How? Lower the activation energy = energy required to initiate a chemical reaction Carbohydrates are potential E to fuel the cells Cells convert ATP; to power a reaction Enzymes make it easier for that reaction to occur Cyclist resting atop the hill is potential E he doesnt start speeding down the hill until

the final little push to get him over the last barrier Enzymes are catalysts (the push)

Recently Viewed Presentations

  • Step 3a Review - AFCEA International

    Step 3a Review - AFCEA International

    Times New Roman Arial Times Arial Narrow Wingdings Symbol 1_Blank Presentation Blank Presentation 2_Blank Presentation 3_Blank Presentation Microsoft Excel Chart Microsoft Excel Worksheet Adobe Photoshop Image How NETCENTS Helped NCI Achieve Large Business Status Customer Foundation Slide 3 Slide 4...
  • Navigation-Grade Inertial Measurement Unit (NGIMU)

    Navigation-Grade Inertial Measurement Unit (NGIMU)

    Timeline for Submission. KEY DATES FOR SUBMISSION. BAA Announced - 21JAN16 Proposers Day - 1FEB16. Abstracts Due - 1MAR16. Proposals Due - 1 MAY16
  • Chapter 6 Introduction to Defining Classes

    Chapter 6 Introduction to Defining Classes

    Scope and Lifetime of Variables . Scope of Variables: The scope of a variable is that region of the program within which the variable can validly appear in lines of code. A local variable is restricted to the body of...
  • De novo motif finding using ChIP-seq

    De novo motif finding using ChIP-seq

    With the above discussion in mind, we look into an example. The colored dots are motif matches predicted by our scan. The histogram of each of them can be studied. ... the motif signal is diluted . If . d...
  • Welding Techniques and Defects

    Welding Techniques and Defects

    Electrode Work Angles work angle (transverse angle) middle of joint directs heat between sides may need to direct more on heavy plate Transverse Angle Effects Electrode (arc) Placement Helpful Tips SMAW Machine Setup Do SMAW Pipe Welding Techniques Lecture Now...
  • Essay structure - HCC Learning Web

    Essay structure - HCC Learning Web

    It is the roadmap for your essay and explains to the reader exactly what you will discuss in your paper. The thesis statement will be the LAST SENTENCE in your INTRODUCTION paragraph. A basic thesis statement contains the . topic....
  • It Works In Practice, But Does It Work In Theory?

    It Works In Practice, But Does It Work In Theory?

    The Re-Connect Booth One Grade 5 class: many demands on home room teacher or the School Support Counsellor to have their disagreements, miscommunication and misunderstanding "solved" To teach the students how to use the booth, which was set up in...
  • Combination Circuits - Mr. Hoover's Science Classes

    Combination Circuits - Mr. Hoover's Science Classes

    Combination or mixed circuits contain both series and parallel connections. Applying Kirchhoff's Voltage law to a mixed circuit. To analyze a mixed circuit, start by separating the circuit into sections that are connected in parallel and sections that are connected...