What is the skeleton of an embryo mainly composed of?

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks