Answer:
The corect answer is a They contain large number of Rough endoplasmic reticulum
Explanation:
The epithelial cells lining the small intestine helps in both digestion nd absoption of nutrients.The epithelial cells do the same by secreting large amount digestive enzymes.
The digestive enzymes are proteins that are produced by rough endoplasmic reticulum, sorted into golgi appratus and then packed into the vesicles.
Small intestine secrete various digestive enzymes as well as bicarbonate that help in the digestion and absorption of nutrients.
Answer:false
Explanation:the cell wall is a rigid , protective wall that surrounds the plasma membrane.
The rigidity of the cell wall is due primarily to the presence of cellulose and other materials such as lignin and pectin.
Cellulose is a polysaccharide and the plant cell wall is made up of several molecules of it.
Lignin is a rigid and impermeable material and deposited on the cellulose as an extra reinforcement on the cell wall.
Pectin are found in the middle lamellae and helps to cement the adjacent cell walls.
There is also hemicellulose which binds to the cellulose mifilaments.
The cell wall may also possesses plasmodermata,which are pores through which water and nutrients pass adjacent cells.
This rigid covering of the cell prevents it from expanding and shrinking due to water movement in and out of the cells
Answer:
Blood transports <em>oxygen</em> from the lungs to all cells of the body.
Explanation:
In the circulatory system , a person breaths in air which is then filtered for oxygen an d the rest of the components are discarded through exhaling .
The oxygen is then taken in by air sacks which later combines blood with oxygen , so hemoglobin which is a blood component takes it to form oxyhemoglobin , which runs through the blood vessels , to the cells for consumption .
The cells will then deposit the deoxygenated blood which returns back tot he heart and then lungs for oxygenation .
Answer:
Heart attack is when a coronary artery gets block, thus stopping blood supply to part of the heart that coronary artery supply.
Coronary artery disease is a collection of coronary blockage disease that causes heart failure.
