Q11 of 40 Page 11

In persons suffering from insulin-dependent diabetes, _____ the cells of the pancreas degenerate.

Pancrease is a composite gland. It consist of two type of cells—


i. Alpha cell - secreate glucogon (increase sugar level in blood)


ii. Beta cell - secreate insulin (reduce blood sugar level)


If beta cell degenerates than there will be less secreation of insulin, leads to more glucose(sugar) in blood Which leads to diabetes mellitus.

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9

The following are the events in the formation of the first cloned animal – the sheep Dolly.

a) Removal of haploid nucleus from the ovum.


b) Implantation of ovum with diploid nucleus into the surrogate mother.


c) Collection of udder cell from the sheep.


d) Injection of diploid nucleus of udder cell into the enucleated ovum.


e) Development of a young clone.


The correct sequential order of these events is __________ .

 10

The following are statements about stem cells:

a) There are unspecialised / undifferentiated cells.


b) They can be transformed into any type of body cell.


c) They can multiply rapidly to form a large number of similar types of cells.


d) They cannot transform into cardiac cells or nerve cells.


e) They are obtained from reproductive progeny only.


The correct statements are ______________:

 12

Identical twins are born as a result of fertilization between_______.

 13

Identify the incorrect statement about identical twins.