The purpose of ethidium bromide is to bind to the dna double helix and to glow when exposed to ultraviolet light to tell the scientist where the dna fragments end up. true false

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

_is a product of the first stage of photosynthesis.atpglucosecarbon dioxidewater

Which chemical reaction shows photosynthesis? a. water + carbon dioxide + sunlight → oxygen + glucose b. carbon + oxygen → carbon dioxide c. hydrogen + oxygen → water d. nitrogen + hydrogen → ammonia