Web activity

1. What is a macromolecule?
They are normally a large molecule that is very biologically important. They are involved in all of the structures and processes of cells and organisms.

2. What is a monomer?
It is a small molecular structure that may be chemically bonded together to form long multipart polymer molecules.

3. What is a polymer?
A large molecule made up of similar or identical subunits called monomers.


4. List the four main types of macromolecules.
Proteins, lipids, carbohydrates, and nucleic acids


5. What are the types of reactions that macromolecules are shown to undergo?
Hydrolysis reaction, and dehydration synthesis (also know as codensation reaction)


6. Describe how monomers are joined together.
By the dehydration synthethesis.


7. What is the specific name for the bond between simple sugar monomers?
Hydrolysis reaction.

8. Which kind of enzyme joins monomers together?
Ploymer enzymes.

9. Describe how you had to arrange the sugar monomers in order to build a polysaccharide.
To create a polysaccharide I added another monomer, and two hydogens and one oxygen atom attract to create water.

10. Which building blocks of macromolecules are not used in building carbohydrates?
nucleotide, Fatty acids, and amino acids.

11. Why is sugar stored as glycogen in the human body?
It is used to store up energy.

12. Why are plant foods essential to animal life?
Animals take advantage of plants because they are able to make sugar and other nutrients through sunlight, water, and sunlight.

13. Describe how starch is digested by animals?
It is digested in the stomach and intestines then stored as energy.

14. What is "fiber" and why is it important in you diet?
It is a carbohydrate polymer, found in vegetables and fruit. It is important to help digestion.

15. What causes you to pass gas according to the article?
The fermentation of carbohydrates.

16. What are some disadvantages of a low-cab diet?
It affects your bone and kidney health, and it provides cardiovascular risk factors.

17. Describe the role that sugars play in cavity formation in your teeth.
Sugars cause the bacteria to spread that cause cavities.

my acid lab

water

Water is a very unique liquid.  We did a few experiments on the properties of water.  Water has high surface tension.  In class we tested this by dropping water onto a penny.  The penny would eventually be bulging with water.  This property is called cohesion, it is when an object has the properties to stick to itself. It would be a big bubble, and then when it couldn't hold off gravity anymore.  It would burst and fall off the penny.  Later that day we did an experiment to see who could go with the longest string and get water from one beaker to the next.  This is showing the property of adhesion, where water can stick to other objects also. The object to get it to follow the string was get one straight up and down then pour water from the top and let it run off the string into the beaker bellow.  Water is a very unusual liquid.  No other liquid expands when it freezes, but we all know if we fill a bottle with water and freeze it the bottle will break under pressure.  This is good though because it causes ice to be less dense.  Think of it this way if ice was more dense than water, in mid winter a pond would freeze and the ice would sink.  Where would the animals go if the ice fell to the bottom.  They would all die.  So this is why the weird properties of water are so important to us and the animals around us.

controlled experiment

A controlled experiment is an experiment that is only changing one factor.  The independent variable is only changing one thing to see how it effects the dependent variable.  We did an experiment in class to see how different conditions change the growth of corn. In the corn experiment there was the option to add bugs.  If you added the bugs you found that, they damaged the overall yield of the corn.  The other way you can change the experiment is by changing the variety of corn.  If you want a controlled experiment then you have to do one at a time(bugs or variety). This is just one example of a controlled experiment.  In drug testing we usually use animals to test how a drug effects you.  A placebo is a drug in example, for people who need something to give them the will power to live.  It is basically a sugar pill given to make them think it is healing them.  It isn't exactly to tick them as much as to see if medicine will even help.  Its like a thing to make the people think they are on medicine will the doctor can see what will happen with no medicine.