Hiya,
The plasma membrane is sorta like the military of the cell. It's function (it's meaning) is to serve and protect the cell from it's scary surroundings! Composed of proteins, it is very selectively permeable. Meaning it allows certain types of molecules or even ions to pass on through it, as in, active or passive transport.
So, the answer might be...
A.) It is selectively permeable to certain substances.
Hope this helps!
Answer:
Acid Sulfate Soil
Explanation:
This type of soil is represented in some soils with characteristics of high sulfate levels and high acidity.
Answer:
1. Purines
2. States that DNA composition varies among species
3. Hydrogen Bond
4. Purines
<em>Answer to #2 is a little iffy </em>-- sorry
Explanation:
Pyrmidines have two rings
Purines have one ring
Complementary bases are connected by hydrogen bonds.
Hope this helps!
https://www.nature.com/scitable/topicpage/genetic-mutation-1127
<span>Inflation theory is the theory explains why our universe is structured and uniform and suggests that the universe is flat in shape. According to that theory, the universe expanded exponentially fast for a fraction of a second after the Big Bang.</span>