Answer:
Harmful
Explanation:
When you have an autoimmune disorder, your immune system does not distinguish between healthy tissue and potentially harmful antigens.
<span>prophase I. the chromosomes condense, and the nuclear envelope breaks down. ...Metaphase I. pairs of homologous chromosomes move to the equator of the cell.Anaphase I. homologous chromosomes move to opposite poles of the cell.Telophase I and Cytokinesis. ...Prophase II. ...Metaphase II. ...Anaphase II. ...<span>Telophase II and Cytokinesis.</span></span>
<span>When an athlete is nearing the end of a race and her cells are low on oxygen, it is likely to be fermentation. When cells have used up all their oxygen they ferment glucose into lactic acid. Fermentation is a metabolic process that consumes sugar in the absence of oxygen</span>
Answer:
(d). B-cells.
Explanation:
Adaptive immunity can be described as immunity which develops in response to exposure to a pathogen (or foreign molecule). throughout the life. It is divided into two types, humoral immunity and cell-mediated immunity.
Humoral immunity is mediated by B cells that secrete antibodies against particular antigens. These antibodies recognize and neutralize the antigens and activate cell-mediated immunity, which is mediated by T cells.
Thus, the correct answer is option (d).