Exam 3 Flashcards
(23 cards)
Viruses can affect?
Affects the human food supply causing a reduction in production and livestock.
Viruses can transmit what diseases to their host?
Yellow fever, Dengue fever, Zika fever, and Chikungunya transmitted by mosquito
Types of viruses that cause cancers
Anus, Cervical, Leukemia, Liver, Mouth, Ovarian, Penis, Stomach, and Throat
The host cell reproduces
uncontrollably by miotic cell division
Rabies is a virus
that affects the brain function to increase aggression
the enhanced aggression causes
the infectious host to bite another host (transmitted through the saliva)
Viral proteins
4,00,000 have been identified that have agricultural, commercial, and medical value
Types of Viral proteins
Ebola, Polio, TMV, Coronavirus, Zika,HIV, Papillomavirus,Marine Viruses, Norovirus, Herpesvirus, Hepatitis B, and INF
Using big data
helped detect emerging viral epidemics
the software monitors the frequency & Location of Online
searches for symptoms and images of related symptoms
Viruses are big or small particles?
small
viruses are smaller than the most minute cells
the smallest viruses are 20 nanometers smaller than ribosomes
several viruses are exceptionally large
the Mimivirus,pandora virus, and the proviruses are the size of small bacterium
Virus genome consists of?
a single strand or double strand and circular or linear DNA or RNA molecule
a protective capsid made of
protein surrounds the genome
some animals have a capsid made of
membranous envelope derived from the host cell membrane
Viruses are natures
ultimate obligate parasites
In order for a virus to replicate in its host cell
The host must provide: energy, molecular building blocks, DNA and RNA polymerase enzymes, and ribosomes
Hiv is tropic for human T-Cells
helper T-cells regulate the adaptive immune system
Hiv requires
250 molecules from helper t cells to replicate
factors determine virus host range
ligands must recognize receptors on the host cell surface, viruses bind to receptors, tropism de
viruses uses
motor protein and atp molecules to move along the cytoskeleton protein
