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Homework pg. 246-253 ?1-5

Question 1) Compare and contrast atoms and molecules.

Answer: An atom is made of electrons, protons, and neutrons. Molecules are groups of atoms.

Question 2) Describe the differences between an organic and an inorganic compound. Given an example of each type of compound.

Answer:Organic compounds contain carbon and hydrogen while inorganic compounds contain no hydrogen or carbon.

Question 3) List the four types of organic compounds found in all living things.

Answer: Carbohydrates, lipids, proteins, and nucleic acids are found in all living things.

Question 4) Infer why life as we know it depends on water.

Answer:We need water to live, to transport materials in our body, and we are composed of more than 50% of water in our bodies.

Question 5) Think Critically If you mix salt, sand, and sugar with water in a small jar, will the resulting mixture be a suspension, a solution, or both?

Answer: This mixture will be a solution. It is a solution because you are mixing three things together, and it isn't a suspension because there is no liquid for the dry compounds to sink it.

Notes 3-11-10

CHEMISTRY OF LIFE

1) You're made of matter and energy.

2) Energy's job is holding matter together or break matter apart.

3) Matter is made up of atoms.

4) Atoms have a nucleus, which is made of protons and neutrons.

5) On the outside of the nucleus (in the atom) there are electrons.

6) Elements are made of one type of atom.

A) Elements cannot be broken down into a simpler form.

B) All elements are arranged in a chart and called a periodic table.

Pg. 232-235 Questions 1-4

Question 1) List the steps an active virus follows when attacking a cell.

First, a virus attaches to a cell, then the virus's hereditary material enters the cell, the the material makes the cell make viral hereditary material and protein. After that, viruses form inside the cell, and the viruses release out of the cell.

Question 2) Compare and contrast a latent virus and an active virus. Give an example of each.

An active virus makes new cells, when a latent virus attaches to the hereditary material of the cell, when the cell divides, so does the virus. An active virus is chickenpox, when a latent virus is a cold sore.

Question 3) Explain how vaccines prevent infection.

Vaccines prevent infection because when you are immunized, the shot is actually the sickness itself, but at such a low amount you body builds interferons to be immune to the infection.

Question 4) Infer how some viruses might be helpful.

Some viruses might be helpful because, using gene therapy, doctors and scientists can replace defective heredity cells with the virus heredity cells, which might somehow lead to a cure for genetic disorders and cancer.

pg. 221-230 ? 1-5

Question #1: Describe the events leading to he discvery of the cell theory.
The discovery of the cell theory started when Robert Hooke (1665) looked at a cork under a microscope and saw little boxes, called cells. Then in 1830 Matthias Schleiden looked at plants under a microscope, and they had cells. Then Theodor Schwann found out that animals are made of cells. Rudolf Virchow thought that cells would form new cells, and every cell came from a cell, hence the cell theory.
Question #2: Identify the role of the nucleus in hte life of a cell.
The nucleus is in the center of the cell, and it lets material leave and enter it. The nucleus contains DNA. The nucleus is like the brain of the cell.
Question #3: Compare and contrast the differences between plant and animal cells.
Plant cells have the cell wall of adjacent cell, the chloroplast, the central vacuole, and the cell wall. The Golgi body in the plant cell is smaller than the animal cell. The animal cell has the lysosome, and the plant cell doesn't.
Question #4: Explain how a cell is like your school or town. What is the nucleus of your town? The mitochondria?
If our town was a plant cell, the nucleus would be the school district and the Sheriff's Office. The central vacuole would be the Fire House because it is so big. The Golgi bodies would be the Court House, it stores most of the information. the Cell wall would be the mine, it is always there and huge. THe mitochondrion would be Raine's store, it releases energy when needed.
Question #5: Think Critically: How is the cell of a one-celled organism different from the cell in many-celled organisms?
A one-celled organism dependes on itself to provide life, but a many-celled organism depends on other cells to provide life.

Homework date: 2-18-10

Question #1: Explain the purpose of classification.

The purpose of classification is to classify organisms with similar structures.

Question #2: Identify what information a scientist would use to determine an organism's phylogeny.

To find an organism's phylogeny, you can use fossils, hereditary information, and the early stages of development.

Question #3: Think Critically why would a field guide have common names as well as scientific names?

A field guide would have common and scientific names because the common names would be useful for ordinary people who don't know the scientific names, and scientific names would be needed because they have to avoid mistakes, to know the same genus, to give descriptions, and to organize data well.

Question #4: Classify Create a dichotomous key that identifies types of cars.

ON PAPER

Notes 2-11-10

Linnaeus-developed a method of classifying organisms; basically he created a way of categorizing animals by similar structures

Binomial Nomenclature: Two name system that scientists use today

^

Genus Species

Genus:a group of organisms with similar structures

Genus: Rana Species: Pipiens

Modern Scientists use similar structures to classify organisms. They also use fossils, heredity information, and early stages of development.

1)Phylogeny: is the environmental history of an organism, or how the organism has changed over time.

-The smallest group of classification system used is species.

-The largest group is the kingdom.

Scientists use field guides to identify organisms in the field.

-The field guides include descriptions of information on organisms.