Which of the following statements is correct for the karyotype?
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Number of chromosomes in male differs from that of female in the human cells.
The number of chromosomes in the cells of the same species is constant.
All cells of all living organisms have the same number of chromosomes.
Number of chromosomes in hepatic (liver) cells differ from pancreatic cells in human.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem

i think its white blood cells

i hope this