Which category of biological molecule includes DNA? 1. carbohydrate
2. nucleic acid
3. protein
4. lipid

Astudent conducts an experiment to determine how the amount of water given to a plant affects it growth what is the dependent variable for this experiment

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

The cluster of developing cells from conception until birth is called an