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IrinaK [193]
3 years ago
15

III. What do we know about Chickenpox and Shingles? Is it viral or bacterial disease? Provide details for the following: cause;

virulence factors, portal entry, signs and symptoms, incubation period, treatment and prevention
Biology
1 answer:
My name is Ann [436]3 years ago
5 0

Both chicken pox and shingles are caused by varicella zoster.

Explanation:

Shingles and chicken pox both occurs by the attack of the virus, varicella zoster.

Cause: - The chicken pox spreads through the infectious elements in a person’s cough, sneeze and breathing. The shingles occur when this virus gets reactivated.

Portal entry: - Chicken pox virus enters through the tract of respiration and shingles enter from a person who already have it.

Signs & Symptoms: - Pox includes- fever, blister like itchy rash and shingles include- blister rash which has a distribution that is like a band.

Incubation period: - Pox can stay for a minimum of 15 days approximately and shingles too last for few weeks.

Treatment and prevention: - Both include treatment of antiviral and both can be prevented by avoiding infected people and increasing body immunity etc.

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Nitrogen is important
uranmaximum [27]

Plants and animals could not live without nitrogen. It is an important part of many cells and processes such as amino acids, proteins, and even our DNA. It is also needed to make chlorophyll in plants, which plants use in photosynthesis to make their food and energy.

Nitrogen is an important component of many essential structural, genetic and metabolic compounds in plant cells. It is also an elementary constituent of numerous important organic compounds including amino acids, proteins, nucleic acids, enzymes, and the chlorophyll molecule.

Of all the essential nutrients, nitrogen is the one that is most often limiting for crop growth. Nitrogen is the nutrient which normally produces the greatest yield response in crop plants, promoting rapid vegetative growth and giving the plant a healthy green color.

7 0
2 years ago
Agrobacterium infects plants and causes them to form tumors. You determine that tumor formation requires a large amount of the p
lianna [129]

Answer:

<em>Agrobacterium</em> <em>tumefaciens</em> is a gram negative bacteria that is responsible for tumor formation in the different parts of plant body.

Explanation:

It causes crown-gall disease in plant body by transferring it's DNA into the plant body which include Ti plasmid.

There are 3 types of bacteria that form tumor in different plant ares.

<em>Agrobacterium rhizogenes</em>,<em> Agrobacterium tumefaciens</em> strains contain either Ti or Ri plasmid but <em>Agrobacterium vitis</em> contain only Ti plasmid   which are virulent.

The transfer of T-DNA takes place into the body of host cells and then the DNA is expressed into the body of the host and thus forming gall or tumor.

8 0
2 years ago
One particularly severe impact humans have on natural environments is the introduction of invasive species. invasive species hav
SpyIntel [72]
<span>Invasive species have particularly devastating effects on islands because island species have typically evolved with few competitors and predators.
And thus if an invasive species is introduced into these islands, it will have severe consequences given that islands don't normally have a lot of predators and competitors. This is why humans need to take care of what they are doing if they want to preserve their natural environment. 
</span>
4 0
2 years ago
The phenomenon of multiple, overlapping action potentials gradually building muscle tension is called:
rewona [7]
The answer is graded potential<span>. Its made of various action potentials that depolarise the neuron incrementaly, in short interspersed intervals that do not give time for the neurons to return to resting potential. Therefore, the actions potentials, of varying sizes, grade up in  sum and when they cumulatively reach the threshold level, they invoke an impulse in the nerve</span>




5 0
3 years ago
The granite most likely was formed by the process of A) compaction and cementation B) erosion and deposition © heating and metam
Jlenok [28]

Answer:

<u>D) melting and soliditation​</u>

Explanation:

Granite is a type of grainy (medium-coarse) igneous rock. These are formed from quartz, alkali feldspar and trace minerals along with plagioclase. Rocks like quartz, form a crystal from magma or as a precipitate near hydrothermal vents.

A type of intrusive igneous rock, granite is formed from its constituents when it molten rock cooled. Larger mineral crystals are associated with slower cooling over time.

3 0
2 years ago
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