EASY
Earn 100

Which metal is present in chlorophyll?

Important Questions on Elements of Group 1 and Group 2

EASY

Match list-I with list-II :

       
(a) Be (i) Treatment of cancer
(b) Mg (ii) Extraction of metals
(c) Ca (iii) Incendiary bombs and signals
(d) Ra (iv) Windows of X-ray tubes
    (v) Bearings for motor engines.

Choose the most appropriate answer, the option given below :

EASY
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
EASY

Match List-I with List-II

  List-I   List-II
(a) Ca(OCl)2 (i) Antacid
(b) CaSO4·12H2O (ii) Cement
(c) CaO (iii) Bleach
(d) CaCO3 (iv) Plaster of paris

Choose the most appropriate answer from the

EASY
The element playing significant role in neuromuscular function and interneuronal transmission is :
EASY
The function of "Sodium pump" is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump?
EASY
Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is
MEDIUM
The correct statement(s) among I to III with respect to potassium ions that are abundant within the cell fluids, is/are
I. They activate many enzymes.
II. They participate in the oxidation of glucose to produce ATP.
III. Along with sodium ions, they are responsible for the transmission of nerve signals.
HARD

Describe briefly the biological importance of Calcium and Magnesium.

EASY
Magnesium is an essential constituent of chlorophyll, the green colouring matter of plants.
MEDIUM

It is the bones in our body which has the maximum proportion of our body mass. Which metal is the main constituents for these bones?