1) Bone cells are smaller than bone tissue because bone tissue is made up of many bone cells and other components, such as collagen fibers and minerals, that together form a larger structure.
2) An organ is a group of tissues that work together to do a certain job for the body. An example of an organ is the heart.
3) Two organ systems are the respiratory system and the circulatory system.
4) The respiratory system is the most interesting because it allows us to breathe and take in oxygen, which is essential for life. It also helps remove carbon dioxide, a waste product, from the body.
5) It is necessary for the respiratory and circulatory systems to work together because the respiratory system takes in oxygen and the circulatory system transports that oxygen to all the cells in the body. At the same time, the circulatory system carries carbon dioxide, a waste product, back to the respiratory system to be expelled from the body.
Parent Tip: Review the logic above to help your child master the concept of reading comprehension worksheets 5th graders.
