Marnee goes to the doctor because she has been coughing and sneezing. The doctor explains that a pathogen entered her cells and started replicating, which caused her to get sick. What was the cause of Marnee’s sickness? A) bacteria
B) fungi
C) protists
D) virus

What organelle other than the nucleus houses dna in a eukaryotic cell?

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.

Internal feedback works to maintain homeostasis when your a. heart rate decreases as your white blood cells increase b. breathing rate decreases as your red blood cells decrease c. heart rate increases as your liver is cleaning blood d. breathing rate increases as your heart rate increases