Question

microorganisms podcast quiz name: 5. which of the following describes a \symbiotic relationship\? a) a relationship where one organism always kills the other b) a relationship where two species are interdependent c) a process where organisms live without any contact with others d) a process where microorganisms are grown in a sterile lab 6. what is the primary role of nitrogen - fixing bacteria like rhizobia? a) to decompose dead animals in the soil b) to convert atmospheric nitrogen into a usable form for plants c) to protect plant leaves from being eaten by insects d) to help plants absorb more sunlight 7. how does the human immune systems \specific immune response\ work? a) it uses skin as a thick barrier to block all cells b) it uses mucus to trap debris in the nostrils c) white blood cells produce memory cells to defend against a particular pathogen d) it recognizes and removes any foreign matter, regardless of what it is 8. what is \bioremediation\? a) the process of using antibiotics to cure a bacterial infection b) the use of live organisms to clean up environmental pollution c) the study of how viruses evolve over time d) the process of sterilizing a laboratory environment

Explanation:

their role, and they don't help with sunlight absorption. So b is correct.

The specific immune response involves white blood cells (lymphocytes) producing memory cells for specific pathogens. Options a and b are part of the non - specific (innate) immune response, and d describes the non - specific response's general foreign matter removal. So c is correct.

Bioremediation uses living organisms (like bacteria) to clean up pollution (e.g., oil spills). Option a is antibiotic treatment, c is virology, d is sterilization. So b is correct.

Answer:

b) To convert atmospheric nitrogen into a usable form for plants

Question 7