ESTION 10 Vater molecules have what type of bond that is characterized by an une
ID: 271038 • Letter: E
Question
ESTION 10 Vater molecules have what type of bond that is characterized by an uneven distribution of electrons, giving the water molecule regiors of positive and negative charge? O A Polar covalent bond O B. lonic bond O C Nonpolar covalent bond O D Molecular bond QUESTION 11 Which of the following is the correct complementary base pairing for DNA? O A Adenine bonds with adenine, thymine bonds with thymine, cytosine bonds with cytosine, and guanine bonds with guanine o B. Adenine bonds with thymine and cytosine bonds with guanine C. Adenine bonds with cytosine and thymine bonds with guanine D Cytosine bonds with thymine and adenine bonds with guanineExplanation / Answer
10. A. Polar covalent bond.
In water molecule, electrons are more towards oxygen giving it negative charge and positive charge to hydrogen. This type of bond is called polar covalent bond.
11. B. Adenine bonds with thymine and Cytosine bonds with Guanine.
Adenine pairs with thymine by two hydrogen bonds and Guanine pairs with cytosine by three hydrogen bonds.
13. B. Somatic cells.
Cancer arises due to mutation in the somatic cells causing their uncontrolled growth which produces mass of cells called tumour.
14. B. Mitochondria.
Mitochondria carries its own DNA, and is concerned with cellular respiration and generation of energy for the cell.
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