The diagram shows changes in the structure of the uterus lining during the menstrual cycle in a healthy female. Two regions are labelled Q and R. S shows when ovulation…

Several processes can change the proportion of gases in the atmosphere by adding or removing carbon dioxide or oxygen. Which row is correct? Answer: 13) D This is fairly simple.…

Which of the following is/are included in the carbon cycle?1 amino acids in an animal2 cellulose in a plant cell wall3 lipids in a bacterial cell membrane Answer: 13) H…

The diagram shows three different types of animal cell. 1 epithelial cell2 mature red blood cell3 muscle cellWhich of these cells is/are found as part of a tissue? Answer: 13)…

Dolly the sheep was born in 1996. She was unusual because she had no biological father. Sheep have a diploid number of 54 chromosomes in their body cells. The diagram…

Which of the following molecules are involved in both aerobic and anaerobic respiration in ahealthy human?1 carbon dioxide2 glucose3 lactic acid Answer: 13) B 1 – carbon dioxide is produced as…

A human consumes the same amount and type of food and drink on two consecutive days. He also does the same activities on both days. However, one of the days…