If the cytoplasm of a cell is at pH 7, and the mitochondrial matrix is at pH 8, then the concentration of H+ ions _____.

Which molecule shown above contains a carboxyl group?

How many grams of Al2O3 must be added to 2 liters  of water to make a  0.5 Molar Solution. 

What domain do the cells below belong to?

Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In what way(s) do these molecules differ from each other? Testosterone and estradiol _____.

A shortage of phosphorus in the soil would make it especially difficult for a plant to manufacture

A new species has been discovered. Individuals of this species are multicellular eukaryotes that obtain nutrients by ingesting other organisms. How should this species be classified?

Explain why some people are lactose intolerant. (your answer should explain what molecular feature of lactose causes the intolerance)

Given the following DNA sequence below provide the sequence for the complementary strand that would synthesized when replicating this DNA:5’  CCCGATTGCATACCGAAATGC 3’ Give just the CAPITAL letters  not the 5′ or 3′ part–NO SPACES

A sub-field of biology concerned with the study of the gradual process of change in organisms from simple to more complex and which has given rise to the diversity of species seen on Earth.