Type the correct answer in the box. Spell all words correctly. Mr. Xinhua, aged 52, has been an active sportsman all his life.

Lately, due to his arthritis, he has been leading a sedentary life. He hardly goes out. This has led to depression. The depression in turn makes him eat more. Mr Xinhua’s inactive lifestyle and eating habits has caused him to put on a lot of weight. His body shows signs of fat accumulation. Which disorder do these signs indicate?

Mr. Xinhua should watch out for
.

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein.b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid.c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane.d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.

Which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.

What percent of body heat can be lost through the head