Biology Questions and Answers

Biology Questions and Answers

a positive outer side. This electrical
situation is maintainacross the membrane.ed by ion transport

14. Why is pH regulation
    important for living beings?
    How do mineral salts
    participate in this regulation?

The potential of hydrogen (pH) is ameasure of the amount of hydrogen (^)
ions (H-) in a solution. The regulation of
the pH accordieach organ or tissue is eng to the necessitiesxtremely of
important for the organism since
enzymes act only under somranges and many proteins are onlye pH (^)
active under some pH ranges. Therefore
biochemical reactions dlevels of pH to occur. epend on correct
Neutral pH is one of the waterproperties.

15. How do mineral salts
    participate in enzymatic
    activity?

Many minenzymes, i.e., theral saltsey are substances are cofactors of
without which enzymes do not work.

16. What are the main
    biological processes in which
    calcium participates?

Calcium is present in almost all cells and
has several functions.

Calcium has an important role in

muscularcoagulation p contraction,rocess, in t in the bloodhe structur (^) e of
bone tissue, in teeth, in the motility of
the sperm cell fnervous transmission.lagellum and in the

17. What is hemoglobin? What
    is the inorganic element that
    is fundamental in the
    composition of hemoglobin?
    Hemoglobin is the protein pblood responsible for the transport oresent in thef
    oxygen from the lungs to the tissues
    and cells.
    The hemoglobin molecule is composed
    of four protein chains, egroup containing an iron atom. Tach with a he ironheme
    is responsible for the binding of oxygen
    in the lungs and also fhemoglobin and thus of the blood.or the red color of


18. What is the importance of
    magnesium for plants? What
    are the other main biological
    functions of magnesium?
    Magnesium is fufor plants because it isndamentally imp part of theortant
    chlorophyll molecule (and chlorophyll is
    essential for photosynthesis).
    Magnesium also acts as a cofactor of
    several enmuscle relaxation azymes and it is important thnd for the nervous e
    transmission.

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