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Biology

Biology
Which of the following does not have any enzymes in its cells?

Bacteria
Lichen
Virus
Algae

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Biology
Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called

flavoxanthin
carotene
melanin
Xanthophyll

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Biology
Main function of antibodies is against

Unfavourable environment
None of these
During infection
During deficiency of nutrient

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Biology
Corpus luteum is associated with

Kidney
Ovary
Liver
Brain

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Biology
It is formed by a repeating nucleosome units ,which are closely attached to each other to a continuous fibre.

Chromatin
Centromere
DNA
Chromosome

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Biology
Xylem tissue is mainly concered with the

Transport of water and mineral nutrients in plants
Transport of enzymes in plants
Photosynthesis of plants
Storage of prepared foods in plants

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