Answer:
vitamin C
Explanation:
Ascorbic acid or vitamin C is a monosaccharide oxidation-reduction (redox) catalyst found in both animals and plants.[76] As one of the enzymes needed to make ascorbic acid has been lost by mutation during primate evolution, humans must obtain it from their diet; it is therefore a dietary vitamin.[76][77] Most other animals are able to produce this compound in their bodies and do not require it in their diets.[78] Ascorbic acid is required for the conversion of the procollagen to collagen by oxidizing proline residues to hydroxyproline.[76] In other cells, it is maintained in its reduced form by reaction with glutathione, which can be catalysed by protein disulfide isomerase and glutaredoxins.[79][80] Ascorbic acid is a redox catalyst which can reduce, and thereby neutralize, reactive oxygen species such as hydrogen peroxide.[76][81] In addition to its direct antioxidant effects, ascorbic acid is also a substrate for the redox enzyme ascorbate peroxidase, a function that is used in stress resistance in plants.[82] Ascorbic acid is present at high levels in all parts of plants and can reach concentrations of 20 millimolar in chloroplasts.
Humans or other land animals sleep half unconscious and water animals don't
Answer: Neurons communicating slowly and ineffective.
Explanation:
Neurons are cells in the nervous system that communicate with one another to perform information-processing tasks. When they communicate slowly, problem of coordination begins to surface.
Answer: Meniere's disease
Explanation:
Meniere's disease is an ear disorder that causes hearing loss and dizzy spells. In many cases, the disease affects only one ear. This disease usually manifests itself at any age but it is more common between early adulthood and middle age.
