Mr. johnson was in a skiing accident. he suffered traumatichead injuries when he came in contact with a tree. mr. johnson'scerebral cortex no longer registers electrical activity, but his brainstem remains active. mr. johnson

a. is brain dead.
b. is in the agonal phase of death.
c. has entered a persistent vegetative state.
d. is in the mortality phase of death.

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

Will treating a viral infection with antibiotics affect the course of the infection? a) no; antibiotics work by inhibiting enzymes specific to bacteria. antibiotics have no effect on eukaryotic or virally encoded enzymes.b) no; antibiotics do not kill viruses because viruses do not have dna or rna.c) yes; antibiotics activate the immune system, and this decreases the severity of the infection. d) yes; antibiotics can prevent viral entry into the cell by binding to host-receptor proteins.

Adoctor is trying to diagnose a woman with the following symptoms: issues with the heart and lungs, a skin rash, and issues with the joints. what autoimmune disorder will the woman most likely be diagnosed with? a.arthritis b.lupus c.grave’s disease d.allergies