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Archive for Biology

Sickle-Cell Disease

What is it?

Sickle-Cell Disease is a genetic disorder that affects the blood. People produce an abnormal form of hemoglobin. Sickle-shaped red blood cells cannot carry as much oxygen as normal shaped cells.

 

Describe the Genetics.

 

You would inherit sickle-cell disease from your parents, who may be carriers with the sickle cell trait or parents with the sickle cell disease. In order to inherit the sickle cell hemoglobin, you are born with it and if you inherit one sickle gene, you have the sickle cell trait (meaning that you will produce both normal hemoglobin and abnormal hemoglobin. You will usually not have symptoms of the disease). If you inherit two sickle cell genes, you have the sickle cell disease. The allele for the sickle cell trait is most common in people of African ancestry and the allele for the sickle cell trait is codominant with the normal allele.

multicellular heterotrophs

Locker #349, Per.1
Summary of Science Notes

We are going to go onto a magical and awesome trip into the animal kingdom. Here, we will find animals that are multicellular heterotrophs whose cells lack cell walls. There are two types of phylums for the Animalia Kingdom- vertebrates which have backbones and invertebrates that have no backbone. Within these groups, they share common ancestors. We are going to venture into the far expanses of the creatures sponges and cnidarians, one of the simplest animals.

Matter

September 23, 2003

Period 3

HW Questions

Matter is anything that has mass and takes up space. There are different aspects of matter including boiling and melting temperatures.

Matter can be divided into mixtures and substances. Mixtures contain at least two kinds of matter and there is either a homogeneous mixture or heterogeneous mixture. Homogeneous means that all the samples are the same throughout and heterogeneous means that not all samples are the same. Also, substances include elements and compounds. Elements contain only one type of atom and compounds contain more than one type of atom.

Tables of Offspring Traits

Tables of Offspring Traits

 

Jean

Trait

Phenotype

Genotype

Color

Blue

Bb

Gender

Female (Girl)

XX

Eyes

Square

rr

Nose

Round

tt

Teeth

Pointed

Pp

Feathers

Some

Ff

Ears

Round

Ee

Eyelashes

Straight

Ss

 

Maria

Trait

Phenotype

Genotype

Color

Blue

Bb

Gender

Female (Girl)

XX

Eyes

Square

rr

Nose

Round

tt

Teeth

Square

pp

Feathers

None

ff

The Thirteenth Labor of Hercules

The Thirteenth Labor of Hercules

 

As we all may know, Hercules had performed twelve labors assigned by Eurystheus in Greek mythology, obeying Zeuss will. Now, Zeus has assigned Hercules a thirteenth labor that will take place in Lazar Middle School, in the faraway land called America. First, Hercules would have to travel to Montville, New Jersey from his place at Mount Olympus, for he was immortal by now. Upon his arrival at Lazar Middle School, he would have to be the custodian for a day without his super-human abilities and he couldnt be fired for any reason.

Proteins are large organic molecules made of carbon, hydrogen, oxygen, nitrogen, and in some cases, sulfur

Q: What are the two types of Proteins? Explain each.

A: The two types of proteins are incomplete proteins and complete proteins. Incomplete proteins are found in foods from plants. Such foods do no contain all the essential amino acids. On the other hand, complete proteins are found in food that comes from animals. They contain all nine of the essential amino acids.

 

An enzyme is a type of protein that speeds up a chemical reaction in a living thing. Without enzymes, many chemical reactions that are necessary for life would either take too long, or not occur at all. For example, enzymes in your saliva speed up the digestion of food by breaking down starches into sugars in your mouth.

Protist Lab

Protist Lab

 

Purpose: To find out what protists look like under magnification.

 

Hypothesis: If I use the microscope to magnify the protist slides, then I will be able to see what various protists look like under close observation.

Materials: Compound Microscope

Amoeba Slide

Paramecium Slide

Euglena Slide

Bacteria Slide

 

Procedures: 1. Place the amoeba slide on the stage of the microscope.

2. Then, adjust the slide so that it is focused under low power objective.

Punnett Squares for all Traits

Punnett Squares for all Traits

(Marys genotype is always on the top and Tims genotype is always on the left)

 

Bb

Bb

Bb

Bb

XX

XX

XY

XY

 

 

 

Rr

Rr

rr

rr

tt

tt

tt

tt

Ff

ff

Ff

ff

Pp

Pp

pp

Pp

Ss

Ss

ss

ss

Ee

ee

Ee

ee

packaging

September 22, 2003, Period 3, Group 3

Procedure:

4. The reasons for this packaging is that it is airtight and it appealing to the eye. The attractive aluminum foil and the airtight canister package are brilliant. Also, with the plastic bag, there is extra sealing.

 

 

Questions:

 

1.     Yes the package is airtight. It has a film cartridge as the first layer and then a plastic bag as the second layer.

2.     Yes the package retains moisture because both containers are sealed and fastened. No moisture could get through both layers of packaging.

Natural gas is an energy source that is commonly used in homes for cooking, heating, and water heating