Which tenet of cell theory is described by the following paragraph about the historical observations of cells?

the first cell was discovered in 1665 by robert hooke, who observed non-living cells of cork using a crude microscope and noted that they looked like tiny "rooms in which a monk might live." almost one decade later, anton van leeuwenhoek observed the first living cells, which he dubbed "animalcules," meaning "little animals." scientists continued to use these early microscopes to observe cells for over a century, and repeatedly found the cell to be the discrete unit of life. these observations culminated in 1824 with rene dutrochet declaring the cell to be "the fundamental element of organization."

The tenet of cell theory described by the following paragraph is

The cell is the basic unit of the structure and organization in organisms.

Explanation:

The three tenets to the cell theory are described as:

So the following paragraph describes tenet 2, which says that the cell is the basic unit of structure and organization in organisms.

not too sure but maybe in the hot springs.

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.