Can someone help me label these. The options are, Chromosome, nucleus, cell, and base pairs.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

We all have different forms of genes from our parent(s).what are these different forms called? a.alleles b.characters c.dna d.resources