Which continent or continents did the Homo ergaster occupy 1.6 million years ago?

Africa

Africa and Asia

Europe and Africa

Europe, Africa, and Asia

How are lipids unique when compared to other macromolecule groups?

To be valid a scientific observation needs

Explain the difference between fermentation and cellular respiration.

All of the following are functions of the peripheral nervous system except it interprets signals from the external environment it sends signals to the internal organs it receives messages from the central nervous system it sends messages directly to

Calcium and bromine would join with a __bond and sulfur oxygen would join with a ___bond

The ability of a muscle to contract and relax is dependent on the flow of what substance out of and into its storage site in the muscle cell?

Letitia tells her son Evan that he may have one piece of candy with his lunch

Which was the last step in sequencing the human genome? A. cutting the DNA into manageable pieces B. identifying genes by finding promoters C. locating overlapping sequences D. sorting between introns and exons

An organism inherits hits genetic instruction from the

Calculate the concentration of each solution in ppt: A. 12 grams of salt per 2-liters of solution. B. 0.5 grams of sugar per 1-liter of solution.