Around 4.1 billion years ago the first single celled organism appeared
D bc active transport is basically the opposite of osmosis and diffusion
The characteristics that apply only to prokaryotes from the list given above would be as follows:
-These cells have DNA in a region called the nucleoid.
-Some of these cells have structures like flagella and microvilli.
-These cells have cell walls made of polypeptides and polysaccharides.
Hope this answers the question. Have a nice day.
The three things moved throughout the plasma membrane are proteins, carbohydrates, and cholesterol.
-Hope this helps.
Answer:
use this equation for the question
mass number =number of neutron + number of proton
neutron=mass number - number of proton
proton=mass number - number of neutron
Explanation:
example :the mass number of oxygen is 16 calculate the neutron number
soln
In the periodic table the proton number of oxygen is 8
neutron=16-8
=8
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