A closer look - Vitamin deficiency disease and vitamin D Aa Aa Choose from the words in the box to complete the following paragraphs regarding the importance of vitamins and the consequences of inadequate dietary intake. (Note: Each word can be used only once.) B vitamins mineral vitamins C and E deficiency toxicity vitamin D electrolytes vitamin vitamin deficiency disease is an organic compound that must be obtained from the diet and is needed to sustain life. Vitamins have many functions throughout the body. For example, vitamin D function as antioxidants, the function as coenzymes, and is important for calcium regulation. A vitamin is a lack or shortage of a particular vitamin, and prolonged insufficiency can eventually lead to a , characterized by harmful symptoms. A number of risk factors contribute to inadequate levels of vitamin D and increase the likelihood of developing a deficiency disease. Choose the image that depicts the individual at greatest risk for vitamin D deficiency. foto infot Shutterstock. com Martin Allinger /Shutterstock. com 4736202690 Shutterstock. com Finn is a 15-year-old Caucasian boy with a fair complexion who spends a lot of time outdoors playing on his Ryan is a 15-year-old Caucasian boy with a medium complexion who spends a lot of time outdoors playing pick-up basketball Zeshawn is a 15-year-old African American boy who spends a lot of time outdoors competing on his high school track team. high school soccer team.

the bedroo..

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

glycolysis is a process that fuel your metabolism. it is apart of cellular respiration the process that produce atp.

question#1

ans:

cell is the basic unit of organization of all living things. cells are often called the building block of life and it is the smallest unit of life. the study of cell is called cell biology. cell consists of cytoplasm enclosed within membrane, which contain bio-molecules such as proteins and nucleic acid.

two third of cell is water, which means that two-third of your whole body is water. the rest is the mixture of molecules, mainly proteins, lipids and carbohydrates.

question#2

ans:

organ:

an organ is a group of tissues specialized to form a functional unit. an example is the heart in animals.

organ system:

an organ system is a group of several organs whose functions are synchronized to release an effective action in a living organism. an example is digestive system.

question#3

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#4

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#5

our body works because of the interactions that happen between organs and organ systems.  

for example:  

the heart to regulate blood flow throughout the body. the blood carries oxygen and nutrients to the cells and carries carbon dioxide and waste away from the cells. body systems work together in maintaining a constant internal environment. when this balance is disrupted, the body systems may not function properly, and human health can suffer.   you start to feel bad.