What inspired erwin chargaff to study the chemistry of nucleic acids?

Unsaturated fatty acids that have been changed to saturated fatty acids are called

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen

Which of the following describes a bathypelagic zone