Need help ASAP.
For biology

(1.)Which question below do scientists need to answer, to determine whether CRISPR can be used to fight a new bacterium that is resistant to antibiotics? (Circle all that apply)
A. Where did the bacterium come from?
B. What sequence of nucleotides does the guide RNA need to include, to kill the bacterium?
C. What proteins do the virus’s guide RNA code for?

(2.) Which of the following system components is likely to be direct (immediate) cause the antibiotic-resistant bacterium’s own DNA to be destroyed?
A. the invasion of the bacteriophage (virus) into the bacterium
B. the action of the Cas-9 protein
C. the production of the Cas-9 protein
D. the coding of the guide RNA

The term used to describe a disease-causing microorganism isa. virus.b. infection.c. pathogen.d. microbe.e. bacterium.

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.