The right answer is 34.78%
The interphase is the period of the cell cycle that the cell transcribes its genes and the chromosomes are duplicated. It can be subdivided into several phases:
* phase G1
* phase S: during which the chromosomal material is doubled by DNA replication. This is called chromosome duplication.
* phase G2.
Phase G1 is the longest phase of the interphase (its duration depends on the type of cell), followed by phase S, then phase G2.
To calculate the proportion of phase S in the interphase simply make the division:
phase duration S / interphase duration = 8/23 = 0.3478 (in percentage that is 34.78% (0.3478*100)).
The first organ that receives nutrients from the small intestine is the liver. To better understand this, check out the process flow of the digestive system up to how the liver becomes the first organ to benefit from the nutrient absorption by the small intestines. 1. Esophagus - After chewing, the food is pushed down the esophagus and then out of the esophageal sphincter, which is a ring-like muscle at the junction of the esophagus and stomach that controls the passage of food and liquid between the esophagus and stomach.2. Stomach - Swallowed food and liquid are stored in the stomach. The stomach then mixes the food and liquid with digestive juices that it produces. The mixed food and gastric juices will then be called chyme. The chyme is then slowly emptied into the small intestine. 3. Small intestine - The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine and push the mixture forward to help with further digestion. The small intestine has multiple parts: the duodenum, the jejunum and the ileum. The ileum mix and push food towards the large intestines. Located within the ileum are villi that increase the surface area for absorption. The nutrients absorbed here are transferred to the blood stream and liver.
Naive t cells encounter antigen and activate, eventually leaving this compartment as an effector t cell at dendritic cells in lymph tissue (lymph nodes and spleen).
<h3>What is T-cell activation?</h3>
They are a type of white blood cell. T-lymphocytes are the part of the immune system and develop from stem cells in the bone marrow however they develop fully in thymus and leave after maturation. They help in protecting the body from infection and may also help fight cancer. They are also known as T cell and thymocyte.
T-cells get mobilized when they encounter a cell (dendritic cells or B-cells) displaying antigenic peptides bound to its MHC molecule. This MHC-antigen complex activate T-cells receptors and the T-cells start secreting cytokines.
some T-cells become helper T-cells and attract fresh macrophages, neutrophils and other lymphocytes and other cytokines to direct them at the site of action while some T-cell become cytotoxic and track down the virus infected cells.
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