Answer:
DNA contains four types of nucleotide. These are adenine, thymine, guanine, and cytosine. Uracil is the fifth and final nucleotide but it is only present in certain forms of RNA. So back to the question nucleotides are the basic structural unit of nucleic acids.
Answer:
The correct answer is c) plasma membrane; cell wall
Explanation:
Animal and plant cell is eukaryotic cells which means they both contain membrane-bound nucleus and other membrane-bound organelle. There are some difference in plant cell and animal cell.
The main difference is that the animal cell is surrounded by a cell membrane and it lacks a cell wall but plant cell is surrounded by a cell wall which is made up of cellulose. Cell membrane is present beneath the cell wall in plant cells.
Cell wall helps in protecting the plant cell from bursting in a hypotonic environment. Therefore the correct answer is c.
Cell Wall
Explanation:
About 63% of the bacteria tested were Gram-negative, which means that they have a cell wall that is more resistant to certain classes of antibiotics than the cell walls of Gram-positive bacteria.
<span>Nurse should immediately refer to the doctor if there is any side effects occured to the person due to the use of corticosteroid.Because corticosteroid carry a risk of side effects even though it is good for relief for inflammed areas.</span>
2nd answer ecological succession .. don't know about the first one