Osmosis is the net movement of water down the concentration gradient, whereas active transport is the movement of substances against the concentration gradient. • Osmosis does not require energy, whereas active transport does.
Answer:
Largest: Wrangell-St. Elias National Park and Preserve, AK, at 13.2 million acres.
Smallest: Thaddeus Kosciuszko National Memorial, PA, at 0.02 acres.
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Answer:
The plasma membrane found in both prokaryotic and eukaryotic cells is composed of a/an <em>lipids (phospholipids)</em>, which is semipermeable and controls the flow of molecules into and out of the cell.
Whereas lysosomes are primarily involved with the breakdown of proteins and polysaccharides, <em>lipases</em> are involved in lipid and fat breakdown.
Explanation:
The plasma membrane of both prokaryotic cell and eukaryotic cell is made up of specialized lipids called phospholipids that separates the cell components from the outside environment.
Lysosomes contain different hydrolytic enzymes like proteases, lipases and nucleases which breakdown proteins, lipids and nucleic acids. It does this because they are no longer useful for the cell.
All of the choices are correct.
Explanation:
Viruses are non cellular entities which are made up of either a DNA or RNA enclosed within a protein coat.
Viruses cannot reproduce by themselves. They can reproduce only within living cells and hence they are obligate intracellular parasites.
Viruses have a wide range of hosts including animals, plants, bacteria etc.
However, each viral species has a very limited host range.