STD 11 - 2. Biology classification — NEET STD 11 Science — Question

In an ecosystem in abiotic components which of the following occur

In the process of transcription sigma factor is important for

Mark the given statements True (T) or False (F).
(i) Joseph Priestley in 1770 performed a series of experiments that revealed the essential role of air in the growth of green plants.
(ii) O₂ evolved by the sulphur bacteria comes from H₂O.
(iii) The mesophyll cells in the leaves have a large numbers of chloroplasts.
(iv) The membrane system is responsible for trapping the light energy and also for the synthesis of ATP and NADPH in chloroplast.
(v) The wavelength at which there is minimum absorption by chlorophyll-a, i.e. in the blue and red region shows higher rate of photosynthesis.
(vi) Chlorophyll a is the chief pigment associated with photosynthesis.
(vii) Thylakoid pigments like chlorophyll b. xanthophylls and carotenoids are accessory pigments that absorb light and transfer the energy to chlorophyll-a.
(viii) Two chlorophyll a molecules form the reaction centre.
(ix) In PS-I, the reaction centre chlorophyll-a has an absorption peak at 700 nm, hence is called P700, while in PS-II it has absorption maxima at 680 nm, and is called P680.
(x) The splitting of water is associated with the PS-I.
Choose the correct option given below :-

Globulins contained in human blood plasma are primarily involved in

Which one of the following is an example of a non-reducing sugar?

The development of Funaria gametophyte always initiated from

Nucleoproteins in a cell are synthesized in