Biology Unit 2
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16 Terms
What is a disease?
Any change that impairs the function of an individual and causes harm
What is a non infectious disease?
When a sickness is not caused by an infectious agent and cannot be spread
What is an infectious disease?
When a sickness is caused by an invasion of an infectious agent and can be passed between individuals
What is a non contageous infectious disease?
a disease that is not easily transmitted between people
What is a contageous infectious disease?
A disease that is easily transmitted between people
What is a pathogen?
A disease causing agent
What is bacteria?
A living pathogen, that is prokaryotic and unicellular
What is this part of Bacteria?
The capsule layer outside the cell
What is this part of bacteria and what does it do?
The pilli- helps it stick to surfaces
What is this part of the bacteria and what does it do?
The flagellum - enables movement
What does is this part of the Bacteria?
The circular DNA (in nucleoid)
What is this part of the Bacteria?
the cell membrane
What is this part of a virus?
the DNA
What is this part of a virus?
The lipoprotein spikes (on some)
What is this part of a virus?
The protein capsid
What is a virus?
A non living pathogen that is not made of DNA (genetic material) and is found enclosed in a protein capsid (coat)