Tuesday, December 16, 2014

Study Guide Key

Phospholipids, cell membrane
The hydrophilic heads are polar and the hydrophobic tails nonpolar.  Since the heads are polar, they are attracted to the water.  The tails are repelled by it.

3.  prokaryotic DOES NOT HAVE a nucleus and a eukaryotic does
4.  plant cells have a cell wall and chloroplasts and animal cells do not.  Both cells are eukaryotic.
5.  If the difference between the electronegativities of the two atoms is more than 2, it is ionic.  If it is between .5 and 2 it is polar covalents, and if it is less than .4, it is nonpolar covalent.
6.  nonpolar covalent
7.  ionic
8.  metabolism, growth, adaptation, homeostasis, organization (cells), movement, sensitivity
9. 

10.  subatomic particles (protons, neutrons, electrons), atoms, molecules, organelles, cells, tissues, organ, organ system
12.  isotonic – stays the same, hypotonic swells, hypertonic shrinks
13.  independent variable – variable you are testing
Dependent variable changes as a result of the independent variable,
Control – the level of the IV you compare everything else to
Constants – those conditions kept the same in an experiment to ensure that results are due to the independent variable alone.
14. primary – a chain of amino acids
Secondary – pleated sheets or spirals
Tertiary – 3 D
15.  amino acids
16.  isotonic
17.  less than 5
18 more than 5
19. 
20.  adhesion – water sticks to something else through hydrogen bonding
Cohesion – water hydrogen bonds to itself
Hydrogen bonding – a weak attraction between two different molecules due to their polarity.
Polar – having  partially positive and partially negative ends of a molecule.  It is due to differences in electronegativity of the atoms sharing the electrons.

22.  channel proteins, builds structures like hair or muscles, enzymes, receptors, neurotransmitters
23.  to control what enters and leaves the cell and maintain homeostasis; to communicate between cells
24. it was a helix
 25.  see note sheet from 11-25-14

26.  see notes from Ch 6 chart on pH values

Thursday, December 11, 2014

Very Detailed Video Illustrating Protein Synthesis

https://www.youtube.com/watch?v=nHM4UUVHPQM

Protein Synthesis Explained with Legos

I found this model on YouTube.  Although there are some minor inaccuracies, it is a fairly good model to use as an example.

Tuesday, December 9, 2014

A New Resource to Help You Model Protein Synthesis

The following is a link that takes you through the process of transcription and translation.  Since it is done in html5, it should be able to be accessed using your phone or other mobile device.

Protein Synthesis Model

Friday, December 5, 2014

Examples to Help with Protein Synthesis Modeling Assignment

The following provide examples for the various protein synthesis modeling options.

1.  If you chose to do a model, check out this example done by former students:

PROTEIN SYNTHESIS EXAMPLE MODEL


2.  If you chose to do a song, check out the DNA Rap from YouTube

DNA RAP


3.  If you chose the story or cartoon strip, looking at the protein synthesis stories posted on the Advanced Biology Blog from previous years may help to generate some ideas.

PROTEIN SYNTHESIS STORY EXAMPLES  

 

 -  NOTE:  REMEMBER YOUR STORY MUST INCLUDE ACCURATE ILLUSTRATIONS OF EACH MOLECULE AND ORGANELLE INVOLVED IN THE PROCESS.  THESE ARE ABSENT IN THESE EXAMPLES.

Thursday, November 6, 2014

Making Sense of the Enzyme Lab Assignment

The items below in bold print are links for you to visit to complete the enzyme definition assignment.

HOW ENZYMES WORK-MCGRAW HILL ANIMATION


ORGANELLES AND ENZYMES - LYSOSOMES MCGRAW HILL


Monday, September 22, 2014

Instructions for 9-22-14 Cell Transport Activity

Follow the instructions on your handout and use the following links.  Click on the link to visit it.

SODIUM-POTASSIUM PUMP - AN EXAMPLE OF ACTIVE TRANSPORT

FACILITATED DIFFUSION ANIMATION

SIMPLE DIFFUSION ANIMATION

1.  Draw each type of animation in your notebook and label it.  Make sure to include all 3:   Simple diffusion, facilitated diffusion, and active transport, and make sure to label each.

2.  Describe the characteristics of each type of transport for the following topics:

-Direction of movement (down the concentration gradient from more to less OR up the concentration gradient from less to more)

-Does it require a protein channel or not

-Types of molecules that would use it - based on size and polarity  (Example:  small, nonpolar molecules would use this type of transport).

-Does it require energy expenditure by the cell or not?

3.  Answer Question 4 from Friday's activity.

Thursday, September 18, 2014

Advanced Practice for Diffusion and Osmosis

Go to the PHS LabBench Activity, complete the exercises, and the questions provided.  Record answers in your notebook as you complete the activity.

http://www.phschool.com/science/biology_place/labbench/lab1/intro.html