Which of the following statements about pesticides is true?
a.
pesticides provide plants with essential nutrients.
b.
pesticides prevent the destruction of crops.
c.
pesticides are never harmful to plants.
d.
pesticides are never harmful to animals.

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

Where does the esophagus lead to in a frog?

Which of the following statements is true regarding a basic amino acid? a.) the hydrophilic r group of a basic amino acid will be located on the interior of a protein b.) the positively charged r group of a basic amino acid could bind dna c.) the r group of a basic amino acid would only be able to form covalent bonds with other molecules d.) a basic amino acid would be considered both polar and hydrophobic e.) all of the above