Carl's throat hurt. He could not swallow to eat so his mother took him to the doctor's. Doctor Roberts swabbed Carl's throat and
rubbed the swab on a Petri dish. "What's that for?" asked Carl. Doctor Roberts told him that many time severe sore throats are caused by a specific __________ and culturing Carl's throat will help to identify it. A) bacteria
B) fungi
C) protozoa
D) virus
Cells get energy for their functioning through sunlight and other organic food molecules. ATP is a good example of energy pathways through photosynthesis.
