Monday, February 4, 2008

Cell-ebrity Squared Video

There are 5 basic life functions
Growth and Development
Respond to Environment
Nutrition
Reproduce
Respond to environment

All living things have certain things in common
Adaptation to their environment
Growth
Circulation
Sensitive to environment
Reproduction
Cells
The building blocks of life are cells.
All cells in a human are not the same. Please give examples of at least two different types of cells in humans. 1.
Why are cells not the same? b/c they reflect the different functions they serve.
The first person to discover cells was Rober Hooke. He called them cells because they looked like monks' cells called cellula. He first saw cells when he was looking at a piece of cork under a microscope.
The cell theory was created by Theodor Schwann and Matthias Jakob Schleiden.
The three main ideas in the cell theory are
Cells are the basic unit of life
All organisms are made up of one or more cells
All cells arise from pre-existing cells
Unlike animal cells, plant cells contain the organelles _choroplast_ and _______________________________.
All animal cells are covered in a cell __ membranes__. The function of this is to maintains integrity of the cell, controls the passage of materials into and out of the cell, and provides for signal transduction.
The different parts of the cell are known as __organelles__. Each organelle has a specific function. The function of the nucleus is enclosed by a double-layered, porous membrane and contains DNA; the dense core of an atom that is composed of pretons and neutrons. The mitochondria are also known as the ___________________________ of the cell because their function is to release energy from food molecules and transform energy into unable form. Storage is the main function of the _vacuole_.
Bacteria are interesting organisms. Bacterial cells do not have a _membrane_. Instead the chromosomes of the cell are located _necleoid_.
There are different types of transport used in cells as well. _Diffusion_ is the movement of particles from high concentration to low concentration. Osmosis is different than this because it requires _semi-permeable membrane __ and _solute_.
What is the difference between active and passive transport? active transport are cellular energy and passive transport are molecular
What organelle makes the energy used in active transport? osmosis
Is a virus a living cell? no
What is contained inside a virus? RNA and DNA
What is the only life function of a virus? reproduce

1 comment:

Duval said...

Missing 2 answers, but good job overall.