MOLECULAR BASIS OF INHERITANCE

In continuation with preparation for Board 2020, let's practise some objective questions from Chapter 6,

 Molecular Basis of Inheritance

These questions will also be very useful for NEET preparation.

OBJECTIVE QUESTIONS

1. The ________________ biomolecule is a characteristic feature of an organism.
2. If the amount of haploid DNA in a human child is 3.3×10⁹bp, the amount of DNA in a normal human adult would be ________________.
3. The _______________ pyrimidine is present in both m RNA & tRNA but not in DNA.
4. The N bases are attached to __ C of deoxyribose sugar while the PO₄ are present on ____ C.
5. The __________________________ technique helped Wilkins & Franklin to study the structure of DNA.
6. The law of complementarity of N bases was given by ______________
7. Stability of double strand of DNA is due to stacking of bases & ____ bonds.
8. Central dogma of molecular biology was given by _________________.
9. The circumference of a sphere is 2.2 m. what would be the number of base pairs of DNA required to encircle the sphere once?
10. The protein involved in packing of DNA of eukaryotes but absent in DNA of prokaryotes is _____________
11. The ‘beads’ in “beads on String” structure is made of ____________, which is further made of __________
12. Euchromatin is active _______________, but heterochromatin is not.

Do not forget to leave comments, queries and doubts. All the Best

LIFE PROCESSES (Introduction & Nutrition) PRETEST ANSWERS

So assuming that the reading pre test has been sincerely 😇 attempted, I'm today sharing the answers.
If you have not found time/interest to attempt the pre test before, make sure you do that before going through these answers.

1. Molecular movements are needed for life.

2.Energy for life processes is obtained through a process known as Nutrition.

3.Life on Earth depends on Carbon based molecules. (name of element)

4.The most common energy producing reactions in living organisms are oxidation - reduction reactions.

5.The maintenance processes such as nutrition, respiration & excretion are known as Life processes.

6.Besides plants, Bacteria are also capable of  autotrophic nutrition.

7.Breakdown of complex substances in to simple substances is done with help of bio-catalysts known as Enzymes.

8.Whittaker’s 2 groups that are essentially heterotrophs are Fungi & Animals.

9.Food reserve in plants is Starch, while in animals is Glycogen.

10. Leaves with 2 or more coloured patterns are known as Variegated leaves.

11.Opening and closing of stomata is controlled by Guard Cells cells.

12. N is taken in form of nitrates or nitrites from soil; or as organic N compounds prepared by Bacteria.

13. In Amoeba food is taken with the help of Pseudopodia_ while in Paramecium it is taken at a specific spot with the help of Cillia.

14. Watering of mouth is due to production of saliva which contains the enzyme Amylase.

15.  Contraction of muscles in inner lining of alimentary canal leads to movements known as Peristalsis.

16.  Small Intestine is the site of complete digestion in humans.

Self Assessment:

If you have managed ≥12 of 16, you are a good reader, and can easily proceed to next segment.

If you're between the range of 7-11, I suggest you read the pages from your NCERT once again before proceeding to the next segment.

If you're <7, make sure you work on your concentration skills.

LIFE PROCESSES: Reading & Pretest

PRE TEST NCERT pgs 94-100

1.____________ movements are needed for life.

2.Energy for life processes is obtained through a process known as __________.

3.Life on Earth depends on ____________ based molecules. (name of element)

4.The most common energy producing reactions in living organisms are __________________ reactions.

5.The maintenance processes such as nutrition, respiration & excretion are known as __________ processes.

6.Besides plants, ________ are also capable of  autotrophic nutrition.

7.Breakdown of complex substances in to simple substances is done with help of bio-catalysts known as ______________.

8.Whittaker’s 2 groups that are essentially heterotrophs are _________ & _________.

9.Food reserve in plants is _____________, while in animals is ____________.

10. Leaves with 2 or more coloured patterns are known as ____________ leaves.

11.Opening and closing of stomata is controlled by __________ cells.

12. N is take in form of nitrates or nitrites from_________; or as organic N compounds prepared by _____________.

13. In Amoeba food is taken with the help of _____________ while in Paramecium it is taken at a specific spot with the help of _____________.

14. Watering of mouth is due to production of _____________ which contains the enzyme ______________.

15.  Contraction of muscles in inner lining of alimentary canal leads to movements known as ______________.

16.  ________________ is the site of complete digestion in humans.