Answer:
d. all endothelial cells would be venous
Explanation:
The Notch signaling pathway is a cell signaling system which consist basically of 4 NOTCH genes ( NOTCH1, NOTCH2, NOTCH3, and NOTCH4) each of them having the information to build a particular cell membrane receptor protein.
It has been demonstrated in zebrafish embryos that Notch signaling are highly determinant factors during vascular development, and a key function of these genes was specifically to regulate the differentiation of arterial fate in endothelial cells.
Notch signaling-deficient embryos showed a loss of expression of arterial markers such as ephrinB2 from arterial vessels with an accompanying expansion of venous markers into normally arterial domains. In contrast, embryos in which Notch signaling had been ectopically activated, meaning an activation out of "proper" place (where not expected, e.g. venous endothelial), exhibited the contrary phenotype, this is a suppression of vein-specific markers with ectopic expression of arterial markers in venous vessels.
To summarize, when Notch is supressed (in this case inhibited with a specific Notch inhibitor) arterial fate of endothelium is not followed, and venous fate is stablished. Thus, endothelial cells (those expected to form venous tissues but also arterial ones) would specified as venous.
Answer:
Hydrolysis of triglycerides in lipoproteins
Explanation:
Lipoprotein lipase is a water-soluble enzyme which includes pancreatic lipase, hepatic lipase, and endothelial lipase.
Enzymes involved in triacylglycerol digestion are lipases and they catalyze the partial hydrolysis of triglycerides into a mixture of free fatty acids and acylglycerols. After digestion of lipids, monoglycerides and fatty acids associate with bile salts and phopholipids to form micelles. Micelles are structures that are necessary for the transport the poorly soluble monoglycerides and fatty acids to the surface of the enterocyte. But, micelles cannot be absorbed by epithelial cell, only freely dissolved monoglycerides and fatty acids can.
Human Genome Project or HGP was an international and collaborative program, which aimed towards complete mapping, sequencing, and research of the human genome.
<h3 /><h3>What are the primary goals of the Human Genome Project?</h3>
- Human Genome Project was a long, extensive, and collaborative research program initiated in the year 1990 and ended in 2003.
- The aim of the project was to map and sequence the human genome to understand the genetics, hereditary, and other biological studies.
- The primary goal of the HGP was to accurately sequence the 3 billion nucleotide base pairs. The second aim was to identify the genetic sequence in the DNA, which is estimated to be 20,000 to 25,000.
Thus, the primary aim of the HGP was to sequence the 20,000 to 25,000 genes that comprise the human genome.
Learn more about <u>HGP </u>here:
brainly.com/question/2395967
Portals of entry are the sites where micro-organisms can enter a host and reproduce, causing diseases or infections. There are various portals of entry in the human body. This can include the skin, our mucous membranes, and even our respiratory and gastrointestinal tracts. Portals of exit are where these micro-organisms leave and spread to other individuals. Portals of exit include coughing, sneezing, and some of our bodily fluids.
Answer:
1. Reduce Pollutants
2. Conserve Water
3. Eat sustainable seafood
4. Don't purchase items that exploit marine life
5. Don't throw trash into the ocean
Hope this helps :)
