D prevents repeating. experiments have to be repeated to be reliable.
3 is the correct answer. Let me know if you want me to explain why that is the answer.
Answer: Cells have different shapes because they do different things. Each cell type has its own role to play in helping our bodies to work properly. Their shapes help them carry out these roles effectively.
I hope this helped!
Answer: The function of this cell is to take food to other cells
Explanation:
The collar cells have a sticky, funnel shaped collar and a hairlike whip, called a flagellum. The collar cells serve two purposes. First, they beat their flagella back and forth to force water through the sponge. ... Another type of cell, called an amebocyte, takes the food to other cells within the sponge.
Answer:
The more calories a food has, the more energy it can provide to your body. When you eat more calories than you need, your body stores the extra calories as body fat.
Dietary fats are essential to give your body energy and to support cell growth. They also help protect your organs and help keep your body warm. Fats help your body absorb some nutrients and produce important hormones, too.
Carbohydrates are your body's main source of energy: They help fuel your brain, kidneys, heart muscles, and central nervous system. For instance, fiber is a carbohydrate that aids in digestion, helps you feel full, and keeps blood cholesterol levels in check.
The structure and function of our bodies depend on proteins. The regulation of the body's cells, tissues, and organs cannot happen without them. Muscles, skin, bones, and other parts of the human body contain significant amounts of protein, including enzymes, hormones, and antibodies.
Explanation:
