water and mineral
1. What isthe approximate
percentage (in mass) of water
in the human body? Is this
percentage expected to be
larger in the adult or in the old
individual?
2. What are the main
biological functions of water?
3. Water has key participation
in organic reactions. What are
examples of two types of
organic reactions in which
water is respectively
incorporated or liberated in
the products of these
reactions?
4. Is water a polar or a nonpolar molecule? What is the
consequence of that
characteristic for the function
of water as solvent?
5. Which kind of polarity do
water-soluble and fat-soluble
substances respectively have?
6. What is the importance of
water for enzymatic activity?
7. Can the heat capacity of
water be considered small or
large? What isthe biological
significance of that
characteristic?
8. What are the main water
properties that make water
special for life?
9. What are ions? What are
the two typesof molecules
into which ions are classified?
10. Which are the main
positive ions found in living
beings?
11.What arethe main
negativeionsfound in living
beings?
12. How do mineral salts
participate in osmotic
regulation?
13. What is the role of mineral
salts in the creation of electric
tension (voltage) at the
cellular level?
14. Why is pH regulation
important for living beings?
How do mineral salts
participate in this regulation?
15. How do mineral salts
participate in enzymatic
activity?
16. What are the main
biological processes in which
calcium participates?
17. What is hemoglobin? What
is the inorganic element that
is fundamental in the
composition of hemoglobin?
18. What is the importance of
magnesium for plants? What
are the other main biological
functions of magnesium?
19. What is phosphorylation?
What are some biological
processes in which
phosphorylation plays a
critical role?
20. Why is iodine important
for human beings?
21. What arethe main
biological functions in which
chlorine ions participate?