![Medical Quiz](https://medicalquiz.net/files/logo.png)
★ Levels of Organization Quiz
Chemicals that create changes inside of your body.
A. hormones
B. enzymes
C. proteins
D. acids
Select your answer:
![](https://medicalquiz.net/files/wait.gif)
Topics:
Vascular Surgery Human Eye and Colorful World Cell Theory and Cellular Structure Cells, Genetics & Heredity Review Eye or Nose Injuries Cell Injury Cardiovascular Physiology - Function First Aid Check up Macromolecules & Nutrients Genetic Diseases Mitosis for Mya Hematology in Veterinary Medicine Surgical Nutrition Vitamin Doctor EquipmentsOther quiz:
Tenses › ViewWhich tense is used to express that an action started in the past and is continuing till now?
A. present perfect
B. past perfect
C. past continuous
D. present perfect continuous
Microbial Growth › View
In which phase is the bacteria most metabolically active?
A. Lag Phase
B. Log Phase
C. Exponential Phase
D. Death phase