Passive transport is the net movement of substances down a concentration gradient that requires metabolic energy. active transport is the movement of substances up a concentration gradient that does not require

Where can a dna be found in a prokaryotic cell

28. how many linkage groups will be formed by homogametic organism with 28 chromosomes?

How does the fossil record provide evidence that the modern whale evolved from the anthracotheres? a) the modern whale looks like their ancestor the anthracotheres. b) the modern whale has all of the same structures as their ancestor. c) there is not enough evidence to suggest the the modern whale evolved from the anthracotheres. d) the anthracotheres has a structure that is still present in the modern whale, but is no longer of use to the modern whale.