Consider the plant cells in the image below. A microscopic image of plant cells is shown. An arrow points to the cell membrane. Which is a function of the cell structure that is labeled X?

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars