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Biol 1102
Bio 4 non-bio majors
43
Biology
Undergraduate 1
06/29/2011

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Term
Apoptosis
Definition
Programmed death cell: What happens to normal cells that are damaged or not functioning properly. If immune system does not "get" them, they will kill themselves.
Term
Describe normal cell division (4 pts)
Definition
1.)one cell sends a signaling molecule to another cell
2.) signaling molecule binds to receptor on target cell
3.)Receptor sends cyclin proteins to nucleus
4.) Cell divided by mitosis
Term
What is Mitosis
Definition
cell division that makes more body cells.The body cells are identical to body cells they came from.
Term
What does mitosis make?
Definition
Mitosis makes dipload cells
Term
What is Meiosis
Definition
How we make reproductive cells (as opposed to body cells)
Term
What does meiosis make
Definition
Meiosis makes haploid cells.
Term
What are Cyclins
Definition
Proteins that build up and when they reach a certain threshold start mitosis.
(Involved in control of cell division)
Term
What is/are MPF
Definition
Mitosis promoting factor. Protein that initiates mitosis eukaryotes.(Involved in control of cell division)
Term
What is proto-oncogene
Definition
Genes that are involved in starting mitosis. (Involved in control of cell division)
Term
What is an Oncogene
Definition
It is a mutated proto-oncogene that cannot control cell division. Cancer genes.
Term
What are Tumor suppressor Genes
Definition
Make proteins that stop cell division and kill cells.
Term
What are BRCA1 and BRCA2:
Definition
Breast cancer alleles. Increase risk of breast cancer in males and females. Increases risk of prostate and testicular cancers in males.
Term
How do cells lose control of cell division
Definition
Mutation in the genes that control cell division (mutagens/carcinogens)
Term
What is a tumor? (Neoplasm)
Definition
abnormal growth of tissue. Does not have to be cancerous.
Term
What is a benign tumor
Definition
Harmless tumors that do not spread to other tissues. Examples: warts, moles.
Term
What is a Uterine fibroad
Definition
Non cancerous tumor of the uterus. Most common benign tumor in women.
Term
What is a cyst
Definition
A closed sac w/ a membrane around it (fluid or air filled).
Term
what is an abscess
Definition
A collection of pus (dead white blood cells)
Term
What is cancer (Malignant tumor)
Definition
Aggressive tumors that divide rapidly and spread to other cells and tissues.
Term
oncology
Definition
the study of cancer
Term
What are the three characteristics of cancer
Definition
1.) Cells Divide and grow abnormally
2.) rely on glycolysis for ATP. all energy is devoted to cell division.
3.) Metastasis: When cancer cells spread to other parts of the body. Rough cell surface. Cells don't stick together well. -Travel through interstitial fluid to other body parts and form new tumors.
Term
What % of Americans will develop some form of cancer during their lifetime?
Definition
About 40%
Term
What is lymphoma
Definition
A type of cancer that originates in lymphocytes (usually in lymph nodes)
Term
What is Leukemia
Definition
Cancer of the blood cells (usually white blood cells) or bone marrow
Term
What is skin cancer: BASAL CELL CARCINOMA
Definition
Slow growing and most common type of skin cancer
Term
what is Skin Cancer: Malignant melanoma
Definition
an aggressive cancer of melanocytes (skin pigment cells)
Term
What is lung cancer?
Definition
Most common cancer worldwide. Leading cause is cigarette smoke. About 20% of lung cancer cases are related to second-hand smoke.
Term
What is Breast cancer?
Definition
Most common cancer among women. US women have highest rate in the wold. Small, hard, bumpy surfaced lump. Often no pain associated with early stages.
Term
What is a Non-cancerous breast lump (What 3 kinds)... C/F/P
Definition
Cysts: squishy (can move and change size during menstrual cycle).
Fibroadenomas: Round with smooth surface (hard or soft)
pseudolumps: Many causes, symptoms: get checked to be sure (e.g. dead fat tissue or rib pushing on breast tissue).
Term
Cysts:
Definition
Squishy (can move + change size during during menstrual cycle)
Term
Fibroadenomas
Definition
Fibroadenomas: Round with smooth surface (hard or soft)
Term
Pseudolumps
Definition
pseudolumps: Many causes, symptoms: get checked to be sure (e.g. dead fat tissue or rib pushi
Term
Can men get breast cancer? How likely?
Definition
Yes, but 100 times less common in men
Term
What are some factors (5) that might increase risk of breast cancer?
Definition
A.) Genetics (family history)
B.) Cigarette smoke (secondhand too)
C.) Alcohol abuse
D.) Obesity
E.) Abnormal circadian rhythm
Term
G-CS-AA-O-ACR (5 factors inc. cancer risk)
Definition
Genetic (Fam his)
Cig Smoke (secondhand 2)
Alc Abuse
Obesity
Abnormal Circadian Rhythm
Term
What are factors REDUCING risk of breast cancer:
Definition
Lower Age @ 1st childbirth (<24 yo)
Having more children (7% less risk/child
Breastfeeding (%4 less risk/year of feed
Mastectomy=Removal of 1or2 breasts
Oophorectomy=Removal of ovaries. Hysterectomy=removal of all/part of uterus
Term
What is treatment to remove one or both testes called?
Definition
Orchidectomy
Term
What is prostate cancer?
Definition
Most common cancer among men. Nearly all men develop this if live long enough. after age 45 reg checkups=good idea.
Term
Cancer Treatments:
IS-S-R-C
Definition
Immune System:
Surgery:
Radiation:
ChemoTherapy:
Term
How does the immune system treat cancer?
Definition
Macrophages and NKC's: can recognize and destroy cancer cells. Cancer VACCINATION: Uses antigens specific to cancer cells.
Term
Discuss/explain cancer Surgery (treatment)
Definition
Removes cancer cells but ineffective if cancer has metastasized.
Term
What is radiation? (treatment)
Definition
-Stops mitosis so good against cancer cells but damages other cells too. Ineffective if metastasis has occcured
Term
What is Chemotherapy?
Definition
Cancer treatment that relies on a wide range of drugs (chemical therapy). Drugs find and destroy cancer cells or prevent formation of supportive tissue (capillaries), which should help kill cancer cells.
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