The yellow fever virus, like all viruses is an entity consisting of a single unit.
The yellow fever virus unit is made up of a single strand of RNA enclosed in a protein capsid, and an outer envelope which surrounds the whole virus like membrane.
Viruses are not really cells since they do not posses organelles and structures of cells. They are smaller than cells and also unlike cells, they cannot live and reproduce on their own but have to invade cells in order to function.
Thus they are known as obligate parasites.
Answer:
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Explanation:
1. Johannes Kelper described the motion of planets around the sun as elliptical.
2. Isaac Newton first proposed the idea that a force of attraction applied to all objects in space.
3. Robert Hooke used mathematics to prove that gravity increases with decreasing between objects.
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<em>The answer is D.) Because the leaf is coated in lipid molecules</em>
<em>A is wrong because water is polar, an example of non polar is oil, and everyone knows that oil and water do not mix. Their molecules just aren't attracted to each other. </em>
<em>B is wrong because water is polar.</em>
<em>C is wrong because cellulose is one of the most abundant organic compounds on the Earth, and it's a major component of the cell walls in plant cells.</em>
This type of symbiosis is known as mutualism where both individuals are benefited.
Another example of it is Lichen: mutualism between an algae and fungi.
Answer:
Mantle is the answer
Explanation:
The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the mantle is the thickest layer, while the crust is the thinnest layer.
I am taking the same class rn!!! whos your teacher??