Why are most sexually transmitted diseases (STDs) transmitted only by intimate person-to-person contact?

What will be an ideal response?


Answer: Most STDs are sensitive to environmental stressors such as drying, heat, and light. The genitourinary tract where the pathogens thrive is protected against these stressors, so most are not able to adapt to other environments. Bodily fluids from the genitourinary tract are usually the only environment where they remain viable pathogens, so intimate contact is generally required to obtain STDs.

Biology & Microbiology

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Members of the ____ flatworm lineage are vertebrate endoparasites;some, called blood flukes, cause an often deadly

disease in humans called schistosomiasis.

a. Trematoda b. Turbellaria c. Polychaeta d. Cestoda e. Hirudinea

Biology & Microbiology

Which organelle or structure is absent in plant cells?

A) mitochondria B) microtubules C) centrosomes D) peroxisomes

Biology & Microbiology

Write an equation that describes a situation in which a population remains stable

What will be an ideal response?

Biology & Microbiology

Rimantadine is an effective antimicrobial agent against:

A) viruses B) protozoa C) bacteria D) fungi

Biology & Microbiology