What could be achieved by dna profiling using gel electrophoresis?
a. the chromosome number of an organism could be counted.
b. it could be shown that human tissue found at the site of a crime did not come from a person suspected of having committed the crime.
c. a karyotype could be produced.
d. extinct species of living organisms could be brought back to life.

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?