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Eukaryotes: animals and plantsmany eukaryotes are complex, multicellular organisms cells contain membrane bound organelles (such as a nucleus)
Prokaryotes: bacteria and archaeasingle celled organism...

Variation among genes codes for different phenotypes in a population. Individuals that have a phenotype that is better suited to their environment are more able to survive and reproduce, and therefore, ha...

Metaphase is the third stage of mitosis, following Interphase and Prophase. During interphase, the cell replicates its organelles and centrosomes and synthesis of specific proteins for mitosis occurs. Dur...

Xylem passively and unidirectionally transports water (by osmosis) from the roots to the leaves of a plant, whereas phloem uses active transport to bidirectionally transport food from the leaves to growin...

If blood sugar levels are too high insulin is released from the pancreas so glucose is moved into cells. If blood sugar levels are too low glucagon is released and stimulates conversion of glycogen to glu...