Essays Tagged: "host cell"

THE EBOLA VIRUS

rganism that, having no independent metabolic activity, can replicate only within a cell of another host organism. A virus consists of a core of nucleic acid, either RNA or DNA, surrounded by a coatin ... es a lipid layer surrounds it as well. The virus provides the genetic code for replication, and the host cell provides the necessary energy and raw materials. There are more than 200 viruses that are ...

(7 pages) 130 0 3.8 Oct/1995

Subjects: Humanities Essays > Health & Medicine > Diseases

"Describe the theory of endosymbiosis and the arguments for and against this theory"

ere themselves prokaryotic cells before the development of eukaryotic cells. It was believed that a host cell, probably similar to amoeba, ingested a smaller cell by phagocytes. They ingested in a way ... probably similar to amoeba, ingested a smaller cell by phagocytes. They ingested in a way that the host cells are unable to digest them and they were allowed to survive. Also, the DNA of the ingested ...

(4 pages) 64 0 3.0 Dec/2003

Subjects: Science Essays > Biology

Study notes for the main scientists that participated in the early discovery of DNA and the early studies about DNA

h tagged DNA contained radioactivity -Showed that DNA of the virus is injected into host cell and cause the bacteria to make new viral DNA and proteins -DNA is hereditary materi ...

(2 pages) 52 2 3.8 Feb/2005

Subjects: Science Essays > Biology

Virus

NA). This is an example of a bacteriophage:Figure 1.1Because most viruses adapt flawlessly to their host cell, virus structures varies greatly. But there are a few characteristics that viruses share. ... c material is stored. Capsid construction varies among viruses as they form impeccably to fit their host organism. Although virus detail varies with each host cell, all viruses undergo the same steps ...

(4 pages) 47 0 0.0 Apr/2006

Subjects: Science Essays > Biology

Effects Of Ebola Virus On Humans

r) in length and is made up of strands of RNA. The RNA is held in an envelope that was created by a host cell which is covered with spikes (www.encarta.com 1). Scientists so far have discovered four k ... a cure for the plague need to be found. This disease is taken for granted more than many, since the host is unknown, what's to stop it for coming to our town? Works Cited "Ebola Hemorrhagic Fever." ...

(3 pages) 16 0 0.0 Nov/2001

Subjects: Humanities Essays > Health & Medicine > Diseases

Viruses in general: Infectious Mononucleosis

ife. Instead, viruses carry only one or two enzymes that decode their genetic instructions into the host cells. So, a virus must have a host cell (bacteria, plant or animal) in which to live and make ... t have a host cell (bacteria, plant or animal) in which to live and make more viruses. Outside of a host cell, viruses cannot function. For this reason, viruses tread the fine line that separates livi ...

(9 pages) 28 0 5.0 Sep/2007

Subjects: Science Essays > Biology

Combination Therapy for HIV infection

4) Entry inhibitors (or fusion inhibitors) interfere with binding, fusion and entry of HIV-1 to the host cell by blocking one of several targets.5) Maturation inhibitors inhibit the last step in gag p ...

(2 pages) 435 0 0.0 Jul/2008

Subjects: Science Essays > Biology

Assessment: Infectious Diseases, Antibiotic resistance, Cataracts

auses tuberculosis is in the form of rod-shaped bacteria and is known as Mycobacterium tuberculosis.HOST:The tubercle bacillus affects the human host cell. The host-microbe intercation regarding tuber ... s unable to undertake and complete daily activities. A tuberculosis patient feels the need to sleep.HOST RESPONSE:When the tubercle bacillus is inhaled, it may penetrate beyond the air ways into alveo ...

(5 pages) 731 0 0.0 Aug/2008

Subjects: Science Essays > Biology

Endosymbiotic Theory

e membranes in mitochondria and chloroplasts. The symbiotic relationship was beneficial because the host cell would have provided essential nutrients to the engulfed prokaryotic cell in exchange the s ... cell used these nutrients to synthesize ATP molecules, this ATP was used as an energy source by the host cell. The smaller prokaryotic cell was given a safe environment as well as receiving nutrients ...

(2 pages) 3710 0 0.0 Nov/2008

Subjects: Science Essays > Biology

HIV/AIDS in Zimbabwe

apable of adhering to and entering helper T cells, after which it incorporates its own DNA into the host cell's genome via reverse transcriptase and integrase enzymes, it then activates the synthesis ... roteins (Huether & McCance, 2008). This leads to assembly of new virus particles that leave the host cell, destroying it in the process (Huether & McCance,2008). The HIV virus has a preference ...

(5 pages) 0 0 0.0 Dec/2012

Subjects: Science Essays