<span>Microtubules form from dimers of Alpha and Beta subunits that polymerize into a hollow tube. Alpha and beta subunits refer to tubulin. There are things that can stop this from happening, and when one of these events occurs, de-polymerization is called "catastrophe".</span>
Animals store most of their excess energy reserves as fat within the body. Whenever carbohydrates are not available, this stored fat provides the required energy. Fat is a very important part of the diet as it helps to maintain the body temperature. Fats also help to absorb certain vitamins like A, D, E and K.These vitamins are highly essential for our body and is present in our daily diet that we eat. These vitamins are also called fat soluble vitamins. It should also be kept in mind that there are good fats as well as bad fats. The increase in the amount of bad fats can be fatal and can be a reason for heart attack.
Answer:
Red algae - acquired plastids by secondary endosymbiosis
Explanation:
Red algae are believed to have undergo a primary endosymbiosis event. Then a second endosymbiosis event created a large group known as heterokonts. During the primary endosymbiosis event red algae acquire their plastids.
Insulin is released into the blood when oxygen levels are low and blood glucose levels are high
