Chapter 21a Pt. 2 Flashcards Preview

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Flashcards in Chapter 21a Pt. 2 Deck (30)
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1
Q

What is senescence?

A

the nondividing state of a cell

2
Q

What are telometers?

A

pieces of DNA at the tips of chromosomes that protect the ends of the chromosomes

3
Q

When __________ are completely gone, the cell dies

A

telometers

4
Q

Telometers’ ______ serves as a gauge of cell’s age

A

length

5
Q

Telometers’ length serves as a gauge of cell’s ____

A

age

6
Q

Normal cells are “glued” in place by special molecules on their surfaces called _________ _________ __________ (_____)

A

cellular adhesion molecules (CAMs)

7
Q

One way cancer cells break loose is by, _________ __________ ______ _______ ______ ___ ______, that hold them and their neighbors in place

A

secreting enzymes that break down the CAMs

8
Q

Multiple mutations help spread cancer:
The first mutation…
The second mutation…

A

1st- occurs and is passed on to all the descendent cells

2nd- occurs in one of the descendent cell containing the original mutation

9
Q

Damage must occur in at least ____ genes before cancer occurs

A

two

10
Q

A person who inherits only one mutant gene may be ____________ to cancer

A

predisposed

11
Q

__________ __________ are also irreversible

A

Epigenetic processes

12
Q

_______ _____ _____ ___________, only a subpopulation of cells within the tumor, cancer stem cells, have the capacity for unlimited self-renewal and give rise to the tumor

A

Cancer Stem Cell Hypothesis

13
Q

What are the known causes of cancer?

A

(1) viruses
(2) chemicals
(3) radiation

14
Q

viruses can cause about __% of cancers in the U.S.

A

5%

15
Q

What are carcinogens?

A

an environmental agent that fosters the development of cancer

16
Q

some chemicals cause cancer by producing __________ or by stimulating _____ _________

A

mutations

cell division

17
Q

certain _________ (like estrogen) promote cancer

A

hormones

18
Q

radiation can lead to cancer by causing ________ in _____

A

mutations

DNA

19
Q

Which type of cancer is this:

cancers of the epithelial tissues

A

carcinomas

20
Q

Which type of cancer is this:

cancers of the bone marrow

A

leukemias

21
Q

Which type of cancer is this:

cancers of the muscle, bone, cartilage, or connective tissues

A

sarcomas

22
Q

Which type of cancer is this:

cancers of the lymphatic tissues

A

lymphomas

23
Q

Which type of cancer is this:

cancers of the glandular epithelia

A

adenocarcinomas

24
Q

What are ways you can reduce risk of cancer?

A

(1) don’t use tobacco
(2) reduce saturated fat in your diet
(3) minimize your consumption of salt-cured, picked, and smoked foods
(4) eat at least 5 servings of fruit/vegetables every day
(5) avoid excessive alcohol intake
(6) watch your caloric intake, and maintain a healthy body weight
(7) avoid excessive sunlight
(8) avoid unnecessary medical x-rays
(9) have the appropriate screening exams on a regular basis

25
Q

What does the acronym CAUTIONS stand for?

A

Change in bowel or bladder habit or function
A sore that doesn’t heal
Unusual bleeding or bloody discharge
Thickening or lump in breast or elsewhere
Indigestion or difficulty swallowing
Obvious change in wart or mole
Nagging cough or hoarseness

26
Q

What are the ways you diagnose cancer?

A

(1) routine screening
(2) Imaging
(3) Biopsy
(4) tumor marker tests
(5) genetic tests

27
Q

________ _________ can be performed yourself or by medical professional

A

Routine screening

28
Q

What is a Biopsy?

A

the removal and analysis of a small piece of tissue suspected to be cancerous

29
Q

Biopsy is often done using a _______

A

needle

30
Q

What are the different ways to treat cancer?

A

(1) surgery
(2) radiation
(3) chemotherapy
(4) targeted cancer treatment
(5) immunotherapy
(6) inhibition of blood vessel formation
(7) gene therapy