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Ch. 18 biology
Terms in this set (70)
composed of nucleic acids enclosed in a protein coat and are smaller than the smallest bacterium
Are viruses living or nonliving?
What three characteristics of life does a virus not have?
metabolism, homeostasis, cells
all viruses do is ________.
a cell in which the virus replicates in is a ________
Where is the adenovirus found?
adenoid tissue between the back of the throat and the nasal cavity
Viruses are composed of ___________ enclosed in a ________ and are _______ than the smallest ________
nucleic acid, protein coat, smaller, bacterium
What are the 5 characteristics of living things?
cells, reproduction, metabolism, homeostasis, genetic information
a virus that infects a bacteria
What are the 4 viral shapes?
polyhedral, cylindrical, spherical, bacteriopahge
Before a virus can replicate, it must enter the ____ _____
The lysogenic cycle starts the same as the ______ cycle
The virus attaches to the membrane and its ________ enters the cell
Viral DNA that is integrated into the host cell's chromosome is a _______.
Many viruses, like HIV are ___ viruses. ___ is their only nucleic acid.
The RNA virus with the most complex replication cycle is the ________
Once inside a human host, HIV infects ____________.
white blood cells
Newly made viruses are released into the bloodstream by ______ and infect other white blood cells.
Most people with HIV eventually get ____ because over time, more white blood cells are infected are produce new viruses.
These viruses disrupt the normal growth and division of host cells, causing abnormal ______ and creating _____
Particles that behave like viruses and cause infectious diseases.
Prions are composed of ______ but contain no _________.
protein, genetic information
Cause infectious diseases in plants.
first virus identified=
tobacco mosaic virus
How do retroviruses convert their RNA to DNA?
Prokaryotes are ______, and do not have a _______
Prokaryotes are classified into 2 kingdoms: ________ and _________.
Archaebacteria usually live in places with no _______.
Who discover Penicillin?
It was found that penicillin interferes with a bacteria's ability to make _______.
Bacteria reproduce asexually by a process called ________.
Because each new cell has either the original or the copy, the resulting cells are genetically _____________
In addition to binary fission, some bacteria have a form of sexual reproduction called _________________.
Obligate aerobes: require ______ for respiration
Obligate anaerobes: ________ by oxygen
Other bacteria can live either with or without oxygen, using cellular respiration or ___________
An ________ is a tiny structure that contains the bacteria's DNA, and a small amount of cytoplasm
A ______ is never part of a virus.
What characteristics do viruses share with all living organisms?
Virus or Bacteria? Anthrax
Virus or Bacteria? Bubonic Plague
Virus or Bacteria? Cat- Scratch fever
Virus or Bacteria? Herpes
Virus or Bacteria? Salmonella
Virus or Bacteria? Bird flu
Virus or Bacteria? E. coli
Virus or Bacteria? Hepatitis
Virus or Bacteria? chicken pox
Virus or Bacteria? small pox
Virus or Bacteria? rabies
Virus or Bacteria? Lyme disease
Virus or Bacteria? Pink eye
Virus or Bacteria? strep throat
Virus or Bacteria? influenza
Virus or Bacteria? polio
Virus or Bacteria? measles
Virus or Bacteria? cholera
Virus or Bacteria? typhoid fever
Virus or Bacteria? HIV
Virus or Bacteria? Gonorrhea
Virus or Bacteria? Chlamydia
Virus or Bacteria? HPV
Virus or Bacteria? crabs
Virus or Bacteria? Ebola
Virus or Bacteria? Mumps
Virus or Bacteria? Tetanus
Virus or Bacteria? Warts
The core of nucleic acid contains a virus' ___________
There are ___ possible virus shapes.
Polio viruses usually infect ________ and _____ cells
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