Not all of the human genome codes for proteins. Which of the following characteristics describes about 50 percent of the human genome?
genes that code for proteins
B sequences that regulate genes that code for proteins
C genes that code for RNA molecules
D highly repetitive sequences
E imprinted sequences

Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?