How many elements have been found to occur in nature? 90 92 96 99

Using the catalase test, a Streptococcus sample would be: A. Gram (+), Catalase (+) B. Gram (-) Catalase (+) C. Gram (-), Catalase (-) D. Gram (+), Catalase (-)

Which is an example of dehydration synthesis?

Prehistoric remains of animals consist almost exclusively of bones and teeth. Why?

When scientists replace a gene (DNA) from one species with the same gene (DNA) from a different species, the same amino acids will be produced. This happens because

Both a father and child drink water that has flowed through lead pipes. there is also lead-based paint on the walls of their homes. over time the child shows effect of lead poisoning. the father doesn't explain how this could be possible.

What characteristic is shared by birds, salamanders, and sharks?

What economic factor promoted the growth of city states in nothern italy

Alveoli, capillaries, and glomeruli capsules are all lined with simple squamous epithelium. What function is shared by these structures?

Which of the following is a way that new DNA can be introduced to bacteria?

Why do you think it is important to cover your mouth when you cough?