Explanation:
. there gills help them to breath oxygen in water.
. there fins help them to move in water
Answer:
SSB protein.
Explanation:
DNA replication may be defined as the process of formation of daughter RNA molecule from the template DNA. The process of DNA replication occur in 5' to 3' direction.
The DNA strand must be unwound to initiate the DNA replication. The DNA strands must not reanneal for the replication process. Single stranded binding protein (SSB) bounds to the DNA strands and prevent them from re anneal.
Thus, the correct answer is option (d).
Answer:
Potassium
Explanation:
Potassium is the major cation of intracellular fluid and is involved in the normal functioning of neurons and muscles. Adequate intracellular levels of potassium are also required for many vital metabolic activities.
Nerve and muscle cells need to balance the intracellular potassium ion concentration as relative concentrations of potassium ions in intracellular and extracellular fluid regulate their resting membrane potential. Increased extracellular concentration of potassium depolarizes these cells while its reduced levels cause hyperpolarization making the nerve cells and muscle cells non-responsive.
Similarly, heart cells need to maintain the potassium levels as its imbalance disrupts the electric conduction in the heart and may even cause sudden death. Being a part of buffer system of cells, potassium ions maintain the pH of body fluids.
I’m pretty sure the answer is air pollution
