31. which of the following defines purpose?
a. the reason something or someone exists
b. a special, natural ability or aptitude
c. a person's ability, coming from one's knowledge, practice, and/or aptitude
d. any powerful or compelling emotion or feeling

Which of the following choices are the fat soluble vitamin? a) c b) b6 c) d d) calcium

Viral infections in plants ) can be controlled with antibioticsb) can spread within a plant via plasmodesmata c) have little effect on plant growthd) are not spread by animals

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.