Question

PLEASE HELP ONLY A FEW QUESTIONS WILL FAN AND MEDAL

6. Which of the following statements is true regarding infectious agents? (1 point)
Infectious agents are all too small to be seen without a microscope, and none can be classified as living.
All infectious agents are living because they are all classified as microorganisms.
Of all the infectious agents, only viruses are considered living because they actively inject their DNA or RNA into host cells.
Viruses cannot be treated with antibiotics because they are not living organisms.

7. Which discovery in the 1800s led to the development of germ theory? (1 point)
A. Vaccines could prevent a disease.
B. Antibiotics exist that can be given to counteract an infection.
C. Infection rates decline when health care professionals wash their hands in between seeing patients.
D. Some diseases, such as cancer, are caused by chemical factors.

8. Follow a carbon atom in a piece of bread eaten by a boy. Which of the following describes a path that this atom could take?
mouth- esophagus- stomach- large intestine- blood- body cell
mouth- esophagus-stomach-small intestine -blood- body cell
mouth-large intestine-esophagus-stomach-blood-body cell
mouth-esophagus-small intestine-stomach-blood-body cell

7. C