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Chapter 2 BIO
Bio and Physics Notes
28
Science
10th Grade
06/17/2013

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Term
What is the Cell Theory?
Definition
1. All living things are made up of 1 or more cells.
2. Cells are the BASIC units of Life
3. ALL cells come from PRE-EXISTING cells
Term
What are Pro-Karyote?
Definition
Simple Cells with no nucleus.
e.g. Bacteria, Archaea
Term
What are Eukaryote?
Definition
A complex cell with a nucleus. They are in singled and multi celled organisms.
e.g. single cell: amoeba
multi cell: Animals & Plants
Term
What is Cell Division?
Definition
Cell Division is when a cell divides due to reproduction, growth, or repair.
Term
What is the cycle of Cell Division?
Definition
Interphase
Mitosis: Prophase, Metaphase, Anaphase, Telephase
Cytokinesis
Term
What is Interphase?
Definition
Phase of a cell cycle where it preforms normal functions and copies genetic material in preparation for the cell division.
Term
What is Mitosis?
Definition
A phase where DNA in the nucleus divides.
4 stages (PMAT)
Term
What happens during Prophase?
Definition
1. Chromosomes become visible
2. nuclear membrane dissolves
Term
What happens during Metaphase?
Definition
1. chromosomes line in the middle of the cell
Term
What happens during Anaphase?
Definition
1. Chromosomes separate
2. Chromosomes move toward ends of cell
Term
What happens during Telophase?
Definition
1. Chromatids unwind
2. Nuclear membrane reforms around the chromosomes at each side
Term
What is Cytokinesis?
Definition
the phase where cytoplasm DIVIDES to form 2 identical cells (daughter cells)
Term
Name the Checkpoints in the Cell Cycle
Definition
1. Specialized proteins monitor cell activities and surroundings
2. Proteins send messages to nucleus
3. Nucleus instructs the cell whether to divide or not based from signals from surrounding cell saying "DON'T DIVIDE", the amount of nutrients, the DNA replication, or DNA damage.
(Little time repairs cell. Too much destroys)
Term
What does Endoplasmic Reticulum do?
Definition
Transports materials such as proteins through the cell
(The Subway and Highway of Cell)
Term
What does the Golgi Bodies do?
Definition
It removes waste and secretes mucus
(The Garbage Men of the Cell)
Term
What is cytoplasm?
Definition
It surrounds the cell. It's made up of a lot of water and some protein.
Term
What does a Cell membrane do?
Definition
It supports and protects the cell
(Body Guard of the Cell)
Term
What does the Nucleus do?
Definition
It contains DNA (deoxyribonuleic acid) which carries coded instructions for all cell activity.
(Government/Brain to the Cell)
Term
What does the Mitochondria do?
Definition
It gives energy to the cell
(The Power Plants of the Cell)
Term
What does a Cell Wall do?
Which type of Cell is it located in?
Definition
the Cell Wall provides support. It is found outside the membrane and is rigid&pourous.
Located in Plant Cells Only
Term
What does the Vacuole do?
Definition
It turgurs pressure to keep the cell plump and firm.
Term
What does Chloroplast do?
Which type of Cell is it located in?
Definition
It contains chlorophyll which use photosynthesis to make energy for the plant.
It's located in the Plant Cell
Term
What do Vacuoles do?
Definition
Varies between cells
Term
What is Cancer?
Definition
Cancer is a broad group of diseases that result from uncontrollable Cell Division.
Term
What are the types of Cancer?
Definition
Benign: which does not harm (only crowds)
Malignant: harms (interferes with functions)
Term
What are the causes of Cancer?
Definition
Hereditary (From family)
Environmental carcinogens e.g. tobacco smoke, radiations, UV rays, viruses, HPV & Hepatitis B.
Term
What are the types of screenings for Cancer?
Definition
X-rays, Ultra sounds, CT scanning, MRI

Can also test yourself by ABCD (Asymmetry, Color, Border, Diameter) moles.
Term
What are Treatments for Cancer?
Definition
Surgery: Physically removing cancerous tissue.
Chemotherapy: Stops or slows cancer cells from dividing and spreading with drugs taken orally or injected.
Radiation: Damages cancer cells by using a focused beam or implanting a radio active source into tumor.
Biophotonics: uses light energy to diagnose, monitor, and treat living cells & organisms.
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