If you know about light dependent reactions in photosynthesis for bio, i need your help!

Which element is found in both dna and proteins

Which image shows labeled organelles that are present only in plant cells?

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point