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Practical Radiation Protection and Applied Radiobiology
Chapter 5: Cellular Biology and History of Radiobiology
44
Health Care
Not Applicable
02/07/2013

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Term
At what biologic level is all radiation damage done?
Definition
Cellular
Term
What are the 5 properties of protoplasm?
Definition
1. assimilation
2. growth
3. motility
4. secretion
5. irritability
5. reproduction
Term
At what exposure level is radiation presumed safe?
Definition
There is no safe exposure level
Term
(True/False) Mutation caused by radiation exposure is unique to those found in nature.
Definition
False
Term
Biologic effects in tissue caused by radiation exposure are due to what process?
Definition
Ionization
Term
This substance makes up 70% to 85% of a cells composition:
Definition
water
Term
This is the process of moving water in and out of the cell:
Definition
osmosis
Term
What are the major compounds in the cell?
Definition
- proteins
- lipids
- carbohydrates
- nucleic acids
Term
This cellular compound is a polymer and makes up approximately 15% of the cell’s content:
Definition
protein
Term
The process of dividing the radiation exposure into smaller exposures is called what?
Definition
Fractionation
Term
State the Law of Bergonie and Tribondeau in your own words:
Definition
the Law of Bergonie and Tribondeau basically states that cells with high metabolic rate, high mitotic rate, and younger cells are more radiosensitive than mature cells with lower metabolic and mitotic rates.
Term
What are the most common short term effects of radiation exposure?
Definition
- skin damage
- loss of hair
- anemia
Term
(True/False) The discovery of effects of radiation exposure was first made through scientific experiments.
Definition
False
Term
Abnormally dividing cells are called:
Definition
malignant cells
Term
List the phases of mitosis:
Definition
- interphase
- prophase
- metaphase
- anaphase
- telophase
Term
This is responsible for energy storage, hormones, temperature regulation, membrane, digestive process of the cell:
Definition
lipids
Term
List the classifications of carbohydrates:
Definition
- monosaccharides
- disaccharides
- polysaccharides
Term
This cell component makes up antibodies:
Definition
protein
Term
20 of these are essential to humans:
Definition
amino acids (the basic building blocks of proteins)
Term
This is stored primarily in the liver and muscles:
Definition
carbohydrates
Term
This is the unit of heredity:
Definition
genes
Term
List the four nitrogenous bases of DNA:
Definition
- adenine
- guamine
- thymine
- cytosine
Term
Which muscles have the greatest number of mitochondria?
Definition
Cardiac muscle
Term
This is the division of reproductive cells:
Definition
meiosis
Term
The cells more sensitive to radiation exposure are:
Definition
radiosensitive
Term
If a cell is resistant to radiation reaction it is considered:
Definition
radioresistant
Term
When radiation reacts with water in the cell and causes formation of free radicals is called:
Definition
an indirect effect
Term
This is the division of a non-reproductive cell:
Definition
mitosis
Term
Loss of hair is called:
Definition
epilation
Term
The period between cell division is known as:
Definition
interphase
Term
All metabolic functions occur in this medium:
Definition
cytoplasm
Term
This controls protein synthesis in all living cells:
Definition
RNA
Term
Two major sections of the cell are:
Definition
- cytoplasm
- nucleus
Term
These are the blueprint for reproduction:
Definition
nucleic acids
Term
This controls the metabolism and reproduction of the cell:
Definition
nucleus
Term
Animal cells that have an osmotic pressure equal to that of the circulating blood are called:
Definition
isotonic
Term
Gene pairs are also known as:
Definition
alleles
Term
The 2n number in cells is also known as the ______ number.
Definition
diploid
Term
What is the function of the mitochondria?
Definition
- break down nutrients
- produce energy
Term
The primary function of carbohydrates in the cell is to:
Definition
supply energy
Term
Which organelle is associated with dividing the cell into compartments?
Definition
endoplasmic reticulum
Term
At which phase of the cell cycle is the DNA replicated?
Definition
interphase
Term
If a radiation dose is delivered continuously, but at a lower dose rate, it is referred to as what kind of dose?
Definition
protracted
Term
How many matched pairs of chromosomes does the human somatic cell contain?
Definition
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