Question

what is the primary ethical concern surrounding the use of genetically modified organisms (gmos) in agriculture?
a. potential long-term health and environmental impacts
b. enhanced nutritional content
c. reduced pesticide use
d. increased crop yields
which enzyme acts as molecular scissors in the crispr-cas9 gene editing system?
a. cas9
b. ligase
c. polymerase
d. restriction enzyme
what is the primary application of gene therapy?
a. to create genetically identical organisms
b. to enhance crop yields
c. to treat or prevent diseases
d. to modify animal traits

Explanation:

First Question:

Ethical concerns about GMOs in agriculture focus on unknown long - term effects on health (like new allergens) and environment (like gene flow to wild species). Options b, c, d are benefits, not ethical concerns.

In CRISPR - Cas9, Cas9 enzyme cuts DNA (acts as molecular scissors). Ligase joins DNA, polymerase synthesizes DNA, and restriction enzymes are traditional but not the one in CRISPR - Cas9 for this role.

Gene therapy's main goal is to correct faulty genes to treat or prevent genetic diseases. Option a is cloning, b is GMO in agriculture, d is not the primary application of gene therapy.

Answer:

a. Potential long - term health and environmental impacts

Second Question: