Nicotine and cigarette smoke extract show acute physiological effects on lungs.
Explanation:
Cigarette smoke contains many chemicals that interfere with the body's method of filtering air and cleaning out the lungs. The smoke irritates the lungs and leads to overproduction of mucus. It also paralyses the cilia which results in accumulation of toxins and mucus, resulting in congestion of the lungs.
Tobacco smoke increases tracheal pressure, pulmonary artery pressure, systemic blood pressure and left atrium pressure. It decreases cardiac output and blood flow to the left lower lobe. It induces bronchoconstriction thus decreases peak flow in healthy subjects. It is also known to cause temporary slowing of mucociliary clearance of the lungs.
Answer:
Mitosis = 28 chromosomes
Meiosis = 14 chromosomes
Explanation:
- Mitosis is the type of cell division in which the daughter cells are genetically identical to the parent cell and possess the same number of chromosome as the parent cells. For example, a diploid parent will produce a diploid daughter cell after mitosis.
- Meiosis, on the contrary, is the cell division that produces daughter cells that are genetically different from the parent cell. Each daughter cell have a reduced number of chromosomes (by half).
According to this question, a diploid eukaryotic cell contains 14 pairs of chromosomes i.e. 2n=28. After mitosis, each daughter cell will have same 28 chromosomes as the parent cell. Meiosis on the other hand, will produce daughter cells that possess 14 chromosomes each.
The answer is B Microscope :)
HIV came become AIDS (acquired immunodeficiency syndrome) if not treated.