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IRISSAK [1]
3 years ago
13

What are some of the functions of photosystem i and photosystem ii in plants?

Biology
1 answer:
Sidana [21]3 years ago
7 0

Answer:

Photosystem I (PS-I )and photosystem II (PS-II ) are two multi-protein complexes. These complexes contain the pigments used to absorb, harvest and catalyze the photons and light energy in the photosynthetic reactions. The main purpose of photosynthesis reactions to produce high chemical energy compounds.

Photosystem I and II are different from each other because of their absorbing wavelength of light. PS-I absorbs the longer wavelength of light than PS-II.

PS-I plays the major role in the production of high energy carriers ATP and NADPH using light energy (700 nm).

PS-II plays its function in the hydrolysis of water and ATP synthesis using light energy (680 nm).

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a. 3:1 (normal bristles to hairless)

b. 2:1 (normal bristles to hairless)

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a.  If H allele is present, the fly will be hairless. But H allele is lethal at homozygous condition, so all hairless flies will be heterozygous for H locus (Hh). S allele has no effect on bristle number, but in presence of H allele, S produces a "normal" phenotype and is also lethal at the homozygous condition. So genotypes and phenotypes will be like this:

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6 Normal (SsHh, ssHh, and sshh)

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So, the ratio of flies with normal bristles to hairless individuals will be 2:1.

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2 years ago
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