Catabolic exercises are usually aerobic and good at burning<span> fat and calories. ... stimulates the liver to</span>catabolize<span> glycogen, which enters the blood as </span>glucose<span>. ... is a small protein that regulates communication and interactions </span>between<span> cells.</span>
The beaker containing the hot water.
The correct answer is A.
Animal cells do not have a cell wall.
A cell wall is the rigid, outermost covering of plant cells and is made up of cellulose. It is absent in animal cells. The cell wall is visible under a light microscope.
Animal cells are instead covered by a cell membrane. It is made up of lipids, proteins, and small amounts carbohydrates. It is a thin and delicate structure that can only be seen using an electron microscope.
D. is a recent development resulting from the burning fossil fuels