CBSE biology

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Question
CBSEENBI12001837

Name the part of the flower which the tassels of the corn-cob represent.

Solution

Tassels of the corn represent stigma and the style of the flower.

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Question
CBSEENBI12001838

Mention any two contrasting traits with respect to seeds in pea plant that were studied by Mendel.

Solution

The two contrasting traits with respect to seeds in pea plant that were studied by Mendel are:
Seed shape - Round seeds and Wrinkled seeds.
Seed colour- Yellow and Green.

Question
CBSEENBI12001839

Why is secondary immune response more intense than the primary immune response in human?

Solution

Secondary immune response is more intense than the primary immune response because our body appears to have memory of the first encounter that recognize the pathogen quickly on subsequent exposure and overwhelm the invaders with a massive production of antibodies.

Question
CBSEENBI12001840

Why is it not possible for an alien DNA to become part of a chromosome anywhere along its length and replicate normally?

Solution

The replication does not initiate randomly at any place in DNA it only starts at the site of origin of replication (ORI), thus it is not possible for an alien DNA to become part of a chromosome  anywhere along its length and replicate normally .

Question
CBSEENBI12001841

State the role of C-peptide in human insulin.

Solution

C-peptide is the extra stretch of polypeptide which makes the insulin inactive (proinsulin).