Nancy's Science Blog

2008-10-03T12:05:00.000-07:00

Mitochondrion...Organelles tgat produces much of the ATP mad by a eukaryotic cell.

Nucleus...Oreganelle that houses the DNA of eukaryotic cell.

Chloroplast...Organelle that uses light energy to make carbohydrates from carbon dioxide and water.

Cell Wall...The structure that surrounds the cell membrane and provides support for the cell.

Cell Membrane...Lipid bilayer with embedded proteins that encloses the cytoplasm; essential to the cell's cytoplasm; also called the plasm membrane.

Golgi Apparatys...Organelle that packages and distributes molecules produced by an eukaryotic.

Endoplasmic Reticulum(ER)...cell membranes in the cytoplasm that transports substances made by the cell.

Lysosome...organelle in an eukaryotic cell that contains digestive enzyems.

Vacuole...Stores substances and gives a plant rigidity.

Vocabulary!!!

2008-09-13T22:56:00.000-07:00

Biology: is the study of life.
Cells: are highly organized, tiny structures with thin coverings called membranes.
Reproduction: is the process by which organisms make more of their own kind from one generation.
Metabolism: is the sum of all of the chemical reactions carried out in an organism.
Homeostasis: the maintenance of stable internal conditions in spite of changes in the external environment.
Genes: are sets of inherited instructions for making proteins.
Mutation: a change in the DNA of a gene.
Evolution: change in the inherited traits of species over time.
Species: is a group of genetically similar organisms that can produces fertile offspring.
Natural Selection: the process in which organisms with favorable genes are more likely to survive and reproduce.
Ecology: is the science that studies the interactions of living organisms with one another and with the nonliving part of their environment.

2008-04-24T13:21:00.000-07:00

3 Laws of Motion!

Law 1. An object at rest remains at rest and an object in motion maintains it's velocity unless it experinces an unbalanced force.

Law 2. The unbalanced force acting on an objects mass times it's acceleration.

Law 3. For every action force there is an equal and opposite reaction force.

Examples of the 3 Laws of motion!

Law 1. When the object is in the spoon but it is not moving is an example of Newtons 1st law.

Law 2. How fast the object moves when the catipolt is released is an example of Newtons 2nd law.

Law 3. When you release the spoon is the actin force and the objects flying is the reation force which is an example of Newtons 3rd law.