In the chemical sodium chloride, the positively charged sodium and negatively charged chlorine atoms are held together by a(n) _____ bond.

Polyhydroxyalkanoates used for medical devices

What will be an ideal response?

What is the main form of nitrogenous waste released by mammals to their environment?

a. amino acids b. urea c. ammonia d. nitrate

Some organisms are capable of orchestrating alterations that are collectively termed antigenic variation. This allows the organism to __________.

A) rapidly move through the host's tissues B) drastically decrease its ID50 C) enter the host's body through more than one portal of entry D) evade the host's immune system

Which of the following is NOT a factor that contributes to healthcare-associated infections?

A) compromised host B) chain of transmission in the hospital C) normal microbiota on the patient D) microorganisms in the hospital environment