Minerals

Q. Which of the following statements is the most appropriate for sicklecell anaemia?

1. It is a molecular disease
2. It cannot be treated with iron supplements
3. All of the above
4. It confers resistance to acquiring malaria

Q. How do we decide what is essential for plants and what is not?

Q. Hyponatremia occurs when there is loss of sodium through

1. excessive perspiration
2. vomiting
3. diarrhoea
4. all of the above

Q. In old age, people often suffer from stiff and inflamed joints. What is this condition called? What are the possible reasons for these symptoms?

Q. Sun is the only source of energy for all the ecosystems on Earth, except

Q. Which of the following mineral is responsible for translocation of sugar in plant ?

1. Manganese
2. Boron
3. Molybdenum
4. Iron

Q. During the processing of the prohormone “proinsulin” into the mature “insulin” -

1. B–peptide is removed from proinsulin
2. B–peptide is added to proinsulin
3. C–peptide is added to proinsulin
4. C–peptide is removed from proinsulin

Q. ADA deficiency results in

1. Decrease in yield of crop plants
2. Chromosomal disorders
3. Increased risk of infertility
4. Inability of immune system to function normally

Q. Choose the correct choice from the brackets and complete.
(ii) We need ______ for keeping the body healthy.

Q. Which one is not a property of cancer cells?

1. They show contact inhibition.
2. Divide in an uncontrolled manner.
3. Do not remain confined to the area of formation.
   
4. Compete with normal cells for vital nutrients.

Q. What percentage of proteins of the human body is equivalent to the weight of its skin ?

1. 41.66 %
2. 43.33 %
3. Cannot be determined
4. 44.44 %

Q. _____ are the essential elements not categorised as Biomolecules, but still play a pivotal key role in biological process.

1. Proteins

2. Carbohydrates

3. Lipids

4. Minerals

Q. Name any two common natural resources. ​

Q. Which of the following mineral is responsible for translocation of sugar in plant ?

1. Boron
2. Iron
3. Manganese
4. Molybdenum

Q. Match the following concerning essential elements and their functions in plants:

	Column-I		Column-II
(a)	Iron	(i)	Photolysis of water
(b)	Zinc	(ii)	Pollen germination
(c)	Boron	(iii)	Required for chlorophyll biosynthesis
(d)	Manganese	(iv)	IAA biosynthesis

1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
3. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
4. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Q. Mention any two metabolic disorders, which can be diagnosed by analysis of urine.