The digestive system contains all four major tissue types, epithelial<span>, connective, muscle and nervous. e</span>pithelial<span> tissue lines the entire length the digestive tract. it is made up of many different types of cells, including goblet cells that secrete mucus.</span>
Answer:
Hypermethylation of___ promoters will lead to reduced expression of the correspondent genes. Some genes such as Cell Cycle stop genes _and__DNA repair genes_need to be expressed. When they__are not expressed_, this can lead to cancer.
Explanation:
Oncogenes are genes that may trigger cancer, where they are generally overexpressed (i.e., expressed at high levels). Although there are well-documented exceptions to this rule, DNA methylation generally represses gene expression by preventing the binding of transcription factors to promoters. It is known that the hypermethylation of tumor suppressor genes including, for example, cell cycle stop genes and DNA repair genes, may lead to cancer. Similarly, hypomethylation of oncogenes such as, for example, Cyclin D1 (a cyclin-dependent kinase involved in cell cycle progression), may also contribute to carcinogenesis.
Answer:
Explanation:
The circulatory system consists of typically two organs these are the heart which also belong to the cardiovascular system and the lungs which also belong to the respiratory system these are connected to the arteries, veins and other blood vessels. The lungs receives the oxygen which diffuse oxygen into the blood vessels which transports the oxygenated blood to the heart which is pumped and circulated by the heart to all the parts of the body.
Answer: Each pair of chromosomes consists of two chromosomes that are similar in size and shape. They contain the same genes at the same loci, though they may have different alleles. These pairs of chromosomes are known as homologous chromosomes or homologs.
Explanation:
Using radio telescopes, astronomers have found evidence the new matter is forming in the universe, which is what the big bang theory predicted.
Your answer is B
Well since the big bang theory already supports the idea of new matter forming, we are using new technology to prove an existing theory
In this case, we are using new technology to prove existing theories. NOT making new ones, or modifying them.
