It flows from a high to low concentration gradient across the membrane.
Chromosome is a threadlike structure present in nucleus .Chromosomes are composed of chromatin and carry the genes in a linear sequence; these determine the individual characteristics of an organism there are 23 pairs of chromosomes out of those one is different. In female it is XXY qnd in males it is xy
The answer is (1) !!
it is one direction, from sun to produces to consumer !!