FAST The cell theory was not complete until Rudolph Virchow discovered that

a. cells are alive

b. there are 2 types of cells ( prokaryotic and eukaryotic)

c. all cells come from preexisting cells

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?

Adistinctive characteristic of mammals that is not observed in other vertebrates is