Viral Reproduction
Infiltration of a virus
What is a viral infection?
This is why viruses are so difficult to detect
What is their size?
A tiny particle that contains nucleic acid
What is a virus?
Influenza typically impact these groups the hardest
Who are infants, elderly, people with weakened immune systems?
Virus enters through a would in these cells
What are plant cells?
These respond quickly when an infection returns
What are memory cells?
Organic compound that contain genetic info
What is nucleic acid?
Three main types of animal viruses
What are cancer causing, influenza, rabies?
Virus is engulfed by host cell in these cells
What are animal cells?
This can have hundreds of strains, 2-5 day incubation, 4-6 days with mild symptoms including a low fever
What is the common cold?
Two arguments for viruses are dead
What are not made of cells, able to survive in crystallized form for years, cannot reproduce, grow, or feed without host, do not have DNA and RNA, lack cellular structure, lack cell membranes, made primarily of proteins?
Four things viruses can infect
What are humans, plants, animals, bacteria?
The three main characteristics of a virus’ structure
What are lack complex structures present in living cells, can remain dormant for years, DNA and RNA are enclosed in protein?
It attaches protein coat to bacterial cell, virus injects nucleic acid, instructs cell to produce new acid and protein
What is a bacteriophage?
Nucleic acid is needed to make this
What is protein?
What are able to reproduce, survive off a host (parasite), contain proteins only found in living things, able to mutate, have DNA or RNA
These are proteins that trigger antibiotics and memory cells
What are antigens?
These carry genetic information in RNA, invade host cell, change single RNA to DNA, retrofit host DNA, hide among DNA
What are retroviruses?
Three results of viral reproduction
What are the virus takes control of cell’s activities, make toxins to destroy genetic material, convert cell to make more viruses, use cell’s genetic material, make more virus particles?
The four shapes of viruses
What are spherical, helical, polyhedral, complex?
Four ways a virus can spread
What are droplets in the air, infected food or beverage, blood, mosquitos