Cellular Respiration

You will take notes on the process of cellular respiration.

Happy Thanksgiving


 

Cellular Respiration: Chapter 6

The Mitochondrion:

Multiple Choice Test

The Working Cell

Permeability Lab

To determine the permeability of the membrane of the dialysis tubing.

Questions and Answers

You will answer question related to the chapter.  This will help you to prepare for the test on Tuesday.

Diffusion

You will be taught about the movement of molecules.
The topic will be centered around tonicity- hypertonic, hypotonic, and isotonic solutions.

(Additional notes on the current chapter can be found in Google Classroom.  Information on The Plasma Membrane is listed on pages 6-9 on the link posted in  "A View of the Cell".
Information on diffusion and osmosis can also be found in Google Classroom.)


 The relative concentration of solutes dissolved in an aqueous solution which determines the extent and direction of flow of water.

The Plasma Membrane

You will take notes from the PowerPoint.



 

Enzymes

A More detailed  look at Enzymes

Class Activity

You will work individually to summarize the differences between words or phrases studied so far in this chapter. 
In addition, you will demonstrate your understanding of how enzymes work.

Endergonic and Exogonic Reactions

Photosynthesis is an example of an endergonic reaction:









 Exergonic Reaction:

The Working Cell- Enzymes

Introduction to The working cell.  You will take notes from the PowerPoint.

 The enormous of biochemical reactions occurring within cells is regulated by enzymes.  Enzymes speed up chemical reactions, as well as control the rate at which reactions occur.  They are globular protein molecules manufactured by each cell.  More than 2000 enzymes have been recognized based on the chemical reactions they catalyze.  All of them are structurally different.



An enzyme recognizes a specific molecule called a substrate and binds to it.  Some enzymes are so specific they only act on one substrate, while others can act on a class of substrate.

Enzymes can bring about changes to molecule to which it binds. The change usually involves the forming or breaking of a covalent chemical bond.  Enzymes may split the substrate into two pieces, may add a chemical side group to the molecule, or may simply rearrange the bonds in the substrate.

 Enzymes lower the activation energy by 1) providing a medium that is more favorable than the surrounding one. 2) By bringing the reactant into close contact. 3) They might add or remove a proton from the substrate , strain the substrate molecule's bond, or even form temporary covalent bond between the substrate and some part of the enzyme itself.