Chapter 3: Cellular Level of Org

Question 1

Anaplasia

Answer 1

An irreversible change in the size and shape of tissue cells.

Question 2

Dysplasia

Answer 2

A reversible change in the normal shape, size, and organization of tissue cells.

Question 3

Genetic Engineering

Answer 3

A general term that encompasses attempts to change the genetic makeup of cells or organisms, including humans.

Question 4

Hyperplasia

Answer 4

An increase in the number of normal cells (not tumor formation) in a tissue or organ, thus enlarging that tissue or organ.

Question 5

Hypertrophy

Answer 5

The enlargement of an organ or tissue due to an increase in the size of its cells.

Question 6

Liposome

Answer 6

A mintue spherical sac or lipid molecules enclosing a water droplet. Often formed artificially to carry drug into tissues.

Question 7

Necrosis

Answer 7

Death of one or more cells in an organ or tissue due to disease, injury, or inadequate blood supply.

Question 8

Oncologist

Answer 8

Physician who specializes in the identification and treatment of cancers.

Question 9

Prion

Answer 9

A protein particle that is not visible microscopically, constrains no nucleic acid, is restraint to destruction, and is thought to be the cause of some brain disease such as bovine spongiform encephalopathy (BSE), scrapie, and Creutzfeldt-Jakob disease.

Question 10

Scanning Electron Micrograph (SEM)

Answer 10

An image produced by an electron microscope in which a beam of focused electrons moves across an object with that object producing secondary electrons that are scattered and formatted into a three-dimensional image on cathode-ray tube–also called scanning microscope.

Question 11

Transmission Electron Micrograph

Answer 11

A cross-sectional image produced by an electron microscope that passes a beam of electrons through an extremely small specimen. After passing through the sample the electrons are focused to form a magnified sectional view.