There are 12 chromosomes.
a) each chromatid contains a single molecule of double-stranded dna.
b) each chromatid within a chromosome contains the same set of genes.
c) each chromosome contains both dna and protein.

multiplying and dividing the two decimals and the eqations by the same number of the overalls

answer: b

coz red blood cells marrow and circulates the body for 120 days.

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!