CH 6 Review Questions Flashcards
(31 cards)
In a DNA macromolecule, the sequence of ______ determines the characteristics of every living thing
Nitrogenous Organic Bases
How many base pairs are there in the human genome
2.9x10^9
Radiation induced Chromosome damage may be evaluated during which of the following processes
Metaphase
If exposure to ionizing radiation damages there components involved in molecular synthesis beyond repair, cells do what?
Function abnormally or die
What produces antibodies?
Lymphocytes
Water constitutes approx. _____ of the bodies weight
80-85%
What must the human body provide to ensure efficient cell operation
Food, Oxygen, Water
What human cell component controls cell division and multiplication as well as biochemical reactions that occur within the cell
Nucleus
What is a chemical secretion manufactured by various endocrine glands and carried by the bloodstream to influence other parts of the body?
Hormones
Somatic cells divide through the process of
Mitosis
Protoplasm is the chemical building material for all living things. It cannot however..
Create oxygen
Nucleic acid constitute approximately ____% of cell content
1
Ribosomes DO NOT:
Function as the powerhouse of the cell
What is NOT a phase of mitosis
Spermatogenesis
The ER transports…
mRNA
Food
Waste
Lipids make up what percentage of protoplasm
2%
Water accounts for what % of protoplasm
80-85%
An individual amino acid is called
A monomer
Proteins make up what % of cell content
15%
4 Primary elements of the human body
Carbon
Hydrogen
Oxygen
Nitrogen
Proteins are made up of
Amino Acids
Protoplasm is composed of ___ elements
24
What holds the largest amounts of RNA?
Nucleolus
Cells are made of
protoplasm
