Answer:
1. Nucleoid
2. Plasmid
Explanation:
Prokaryotes are groups of organisms characterized by the lack of a membrane-bound nucleus in their cell. Due to this, the genetic material (DNA) of prokaryotes are found naked i.e. not housed. The DNA of a prokaryote is arranged in a single coiled chromosome located in a region of the cell called NUCLEOID.
However, some prokaryotes e.g. bacteria carry genes on extrachromosomal pieces of circular DNA called PLASMID. Plasmids carry certain genes like antibiotic resistance genes.
The innermost cells of the epidermis are continuously dividing through mitosis to form new cells. The newly formed cells move up through the epidermis toward the skin surface, while producing a tough, fibrous protein called keratin.
Primary plant/tree growth is
characterized mainly by ______.
Here is the correct answer to that
question: the primary plants or tree growth is characterized mainly by upward
and downward growth due to cell division at tips of roots and shoots.
Since Osmosis is the diffusion of water across a membrane from areas of lower concentration to areas of higher concentration, Reverse Osmosis would be the diffusion of water across a membrane from areas of higher concentration to areas of lower concentration.
Answer:
Severe allergic response causes fluid loss from the blood, breathing difficulty and therefore, is life threatening.
Explanation:
The anaphylactic shock results from the type I allergic reactions during which the presence of an allergen triggers a severe response. It occurs since IgE antibodies are already present in the body. There is a release of histamine and other vasodilators. Vasodilation and increased permeability of the blood capillaries result in the loss of fluid from the blood. Constriction of airways of the lungs causes difficulty in breathing and weakens the heartbeat. Therefore, severe fluid loss from blood and constricted airways make it life-threatening.
