An enzyme is a special type of protein molecule. intestinal cells produce digestive enzymes that break down food. these enzymes are not produced by blood cells. which statement best explains why? a)the genes for the digestive enzymes are expressed in both intestinal cells and blood cells. b)the genes for the digestive enzymes are not present in the blood cells. c)the genes for digestive enzymes are present in the intestinal cells, but are not expressed. d)the genes for digestive enzymes are not present in the intestinal cells. e)the genes for digestive enzymes are present in the blood cells, but are not expressed

(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?

Nerve cells are specialized to respond to stimulitrue or false?

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.