Blog

Polar and Non-Polar Molecule Analysis

Polar and Non-Polar Molecule Analysis

Assignment 1:Review1

These questions will cover material in Chapter 2.  This is worth 20 points total.

  1. What is the difference between a polar and non-polar molecule? (1 point)
  2. Is catabolism an endergonic or exergonic reaction? (1 point)
  3. Describe the pH scale.  Be sure to indicate where acidic, basic and neutral fall on the scale. (3 points)
  1. What are the definitions for a monomer and polymer? (2 points)
    1. Monomer =
    2. Polymer =
  2. Complete the chart below. (10 points)
Organic Macromolecules Monomer Polymer Function Examples
Carbohydrates

 

 

   polysaccharide    
Lipids

 

 

 Building blocks =glycerol + fatty acid chains Not a polymer, but still an organic cmpd. like the others    
Proteins

 

 

 Amino Acids      
Nucleic Acids

 

 

   polynucleotide   DNA, RNA

 

  1. What are the components of a nucleotide? (3 points)

Assignment 2:Review 2

  1. Complete the following chart.
Organelle Description Function Animal, Plant or Both
CELL WALL Rigid, tough, made of cellulose    
CELL MEMBRANE Thin, covering, protects cells    
CYTOPLASM Jelly like substance that contains organelles    
NUCLEUS Dense, ball shaped structure, contains DNA    
NUCLEAR MEMBRANE Thin covering over the nucleus    
ENDOPLASMIC RETICULUM Clear, tubular system of tunnels throughout the cell    
RIBOSOME Small specks made of RNA. Found in cytoplasm or on the endoplasmic reticulum    
MITOCHONDRIA Location in the cytoplasm, bean shaped    
VACUOLE Large open storage area, smaller in animal cells    
CHLOROPLAST Green structures that contain chlorophyll    
GOLGI BODY Small bags with tubes connecting them    
LYOSOME Small, round structures, containing enzymes    

 

  1. What are the 4 components that every cell must have ?
  2. What are the similarities/differences between a prokaryotic and eukaryotic cell?
  3. Why is the term “fluid mosaic model” used to describe the plasma membrane?
  4. Select the correct responses by putting an X in the box. Some may have more than one answer.
  Diffusion Osmosis Active Transport
A substance moves from an area of low concentration to an area of high concentration.      
A substance moves and becomes more evenly spread out.      
The movement does not use energy and is caused by the random movement of individual particles.      
The movement requires energy from respiration.      
Only water is involved in this type of movement.      

Assignment3: Microscope Virtual Lab

  1. Fill in the following table:

The first row has been completed for you. Complete the remaining portions. Remember the magnification of an objective appears on the side of the objective. You will find the lens magnification and adjustment knob use in the “Parts of the Light Microscope” section.

Lens Eyepiece Magnification Lens Magnification Calculate Total Magnification Which adjustment knob is used with this lens?
Scanning 10X 4X 10X * 4X= 40X Coarse adjustment knob
Low power 10X      
High power 10X      
Oil immersion 10X      

 

Watch the following video walking though the basics of using a microscope and answer the following questions.

https://www.youtube.com/watch?v=-b3Eejf4rDQ

  1. When you first start to look at an image what objective lens should you start with?
  2. When starting to observe an image is the stage all the way up or down when you start?
  3. What happens to your field of view as he increases magnification of the letter “e”?

Watch the following video featuring the Nikon Small World Competition.  It is really cool.

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

  1. What type of organism is shown in the 4th place image? Give the name.

Watch the following video about preparing an Elodea wet mount and images seen under a microscope and answer the following questions.

https://www.youtube.com/watch?v=UWbGZMO4o_U

  1. What 4 organelles/cell parts are you able to observe on the Elodea wet mount?
  2. What is the term used to describe the chloroplasts moving around in the cell?

Watch the following video about preparing a wet mount of cheek cells and images seen under a microscope and answer the following questions.

https://www.youtube.com/watch?v=i2x3MKSJez4&t=56s

  1. What is the name of the stain used in this video?
  2. What is the blue dot in the cells?
  3. Identify each image below as either an image of bacterial cells, plant cells or animal cells. Type out the answer next to the image.

Assignment 4: Cell Transport Virtual Lab

Part 1:  Complete the following virtual lab.

Cell Homeostasis Virtual Lab – Activity

video.esc4.net › video › assets › Science › Biology › ce…

You cannot go back once you start, so be sure to record the numbers in the table before you move onto the next part.  If not you have to start over.  Be sure to record the answers to the 4 questions at the end of the lab (ex. A, B or C).

  1. Complete the table as you go. I started the first one for you.
Beaker Amt of water (mL) Amt of sugar added (g) Beaker Concentration

(%)

 Dialysis Tubing Concentration

(%)

 Dialysis Tubing First Weight (g) Dialysis Tubing Final Weight (g) Change over 24 hours (g)
A 1000 0 0 0 17.59 17.66 -0.07
B              
C              
D              
E              

 

  1. What letter was the answer to the first question about which bags had little to no change in mass?
  2. What letter was the answer to the second question about why water was used as the control group?
  3. What letter was the answer for the third question asking why the weights did not change for bags A and D?
  4. What is the letter for the fourth question that asks how the cell responds to the external environment?

Part 2:  Watch the following video and answer the following questions.

https://www.youtube.com/watch?v=SrON0nEEWmo

  1. What was the purpose of the vinegar in the experiment?
  2. When the egg was placed into the corn syrup what happened to the size of the egg? What is this due to?
  3. When the egg was placed int the glass with blue water what happened to the size of the egg? What is this due to?
Tags: , , , , ,

Leave a Reply