Match the following descriptions with the correct junction type. group of answer choices these junctions allow the passage of small molecules and ions from the cytosol of one cell to that of a neighboring cell. these junctions are found in epithelial tissue where they prevent paracellular movement of molecules. intermediate filaments penetrate the membranes between two cells at the site of protein plaques forming strong linkage between the two cells.

This question is not complete

Complete Question

Match the following descriptions with the correct junction type. Group of answer choices

1. These junctions allow the passage of small molecules and ions from the cytosol of one cell to that of a neighboring cell.

2. These junctions are found in epithelial tissue where they prevent paracellular movement of molecules.

3. Intermediate filaments penetrate the membranes between two cells at the site of protein plaques forming strong linkage between the two cells.

Options

a. Tight Junctions

b. Gap Junctions

c. Desmosomes

1. These junctions allow the passage of small molecules and ions from the cytosol of one cell to that of a neighboring cell. = b. Gap Junctions

2. These junctions are found in epithelial tissue where they prevent paracellular movement of molecules. = a. Tight Junctions

3. Intermediate filaments penetrate the membranes between two cells at the site of protein plaques forming strong linkage between the two cells. = c. Desmosomes

Explanation:

The epithelial cells in the human body are made of cell junctions. Cell junctions can be defined as cellular structures that are found in the epithelial cells of the human body that are responsible for the cell to cell contact or cell to extracellular matrix contact that is present in animals.

Types of cell junctions include:

a. Tight junctions: These are cell junctions in the body that are formed when protein strands in the cells bind two cells or more together very tightly thereby helping to prevent leakages of essential substances in the body by creating a water tight mechanism in the body. Tight junctions are found in stomach ( to prevent the leakages of digestive enzymes), bladder and intestines.

2. Gap Junctions

These are junctions that are formed due to the direct connection of the cytoplasm of two cells. They are also called communicating junctions. They allow the passages of molecules, ions, electrolytes through them using the means of channels also known as pores. They are found in the cardiac muscles, nervous fibres, smooth muscles.

3. Desmosomes:

These are cell junctions that are strengthen the tissues in the body by joining intermediate filaments of the cell cytoskeletons of adjacent cells to another cell's intermediate filament. They are found present in the Cardiac muscles.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

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.