TYPES OF PATHOGEN/ OR
INFECTIOUS AGENT
WHAT IT IS?
SPEC FC
NAME OF AN
ORGANISM
DISEASE IT CAN
CAUSE
One-celled organism that
found almost everywhere.
2
These organisms are the
human body's worst enemies.
3
A single organism that cannot
make its own food Relies on
other living or dead organisms
to survive
A single-celled organism much
more complex than bacterium.
Protozoan infections usually
come from contaminated
water and food.
An organism that lives in a
host organism and draws
nourishment from it. Some
may be very large​

Taking a foil acid supplement during childhood can prevent illness

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You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv