Let Red = R and Blue = r
so when crossed ; RR , Rr, rr
thus the [ Rr ] are pruple !!!
The answer to this question is b
Answer:
The correct answer is option A. "The contents of blood come into closer contact with tissues in a closed system than an open system".
Explanation:
In a closed circulatory system, the blood has an specific path, circulating from arteries to veins and to smaller blood vessels throughout the body. This is in contrast with open circulatory systems at which the blood is not contained in arteries or veins but it suffuses the body. A closed circulatory system have many advantages over open circulatory system, however in a closed circulatory system the contents of blood are not into closer contact with tissues in than an open system. Actually, in an open circulatory system the blood is in closer contact with tissues.
Photosynthesis would stop
NADP+ is important in photosynthesis because they are significant in both light and dark phases of photosynthesis.
Explanation:
IN the light stage, NADP+ is the ultimate electron acceptor as high energy electrons are passed down a protein chain, from the reactive center of photosystems, as their energy is harnessed to create a proton motive force across the lamellae membrane. NADP+ is ultimately reduced to NADPH. Without NADP+, the electron transport chain would cease.
NADPH, on the other hand, is used to reduce carbon dioxide to glucose in the Calvin cycle. NADPH is oxidized to NADP+ which is recycled back to the light stage of photosynthesis.
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Answer:
In the haploid cell, only one pair of sister chromatids are present, whereas in the diploid cell, two pairs of sister chromatids are present.
Explanation:
Chromosomes with their sister chromatids become visible during prophase. A haploid cell has only one complete set of chromosomes while there are two complete sets in a diploid cell. Therefore, prophase in a haploid cell would show the presence of only one pair of sister chromatids for each chromosome. This cell would not have the homologous pair with two pairs of sister chromatids.
On the other hand, the diploid cell would have two homologous chromosomes for one homologous pair. Each of the chromosomes of a pair would have two sister chromatids. Therefore, one homologous pair would have a total of four chromatids or two pairs of sister chromatids.
