<span>Epithelial tissue is densely packed cells that used most in the area where protection is needed. This cells mostly used in skin, some with more keratin which will increase their ability to protect. In bone, the main protective layer is calcium mineral which was deposited by osteocytes. Because this bone doesn't really need more epithelial cells. Bone tissue only needs a good vascularization and connective tissue to support it.
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Lactic acid in lactic acid fermentation
ethanol in alcoholic fermentation
Chronic lymphocytic leukaemia where your body build up adnormal white cells which causes cancer of the cells. Also HIV destroys these cells.
Answer:
males have one X and one Y chromosome.
Explanation:
Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.
