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:
- Eating different vegetables.
- Eating at different times.
- Eating in different places in the same region.
Explanation:
It is common for herbivorous animals of different species to share the ecological niche and the same habitat without establishing competition for resources. In this case, these animals manage to maintain a balance between their populations and the resources available for both species to survive. Three ways of doing this are:
- Feeding on different vegetables: Even though they are herbivores, some animals prefer a specific type of vegetable, or just feed on these vegetables. We can use as an example animals that eat only fruits and animals that eat only herbs.
- Eating at different times: Some animals have nocturnal habits, while others have diurnal habits. This is very efficient so that these animals are not competitors and are able to feed at different times
- Eating in different places in the same region: We can use as an example two species of turtles, where one lives on the south side of the region and feeds on the vegetables found there, while the other species lives on the north side of the region and feeds on vegetables found there.
In a plant cell, photosynthesis and cellular respiration can both take place simultaneously. Plants carry out both photosynthesis and cellular respiration during the day. Cellular respiration continues because it provides the energy required for essential cell functions.
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What role of photosynthesis and respiration in plant?</h3>
Water and carbon dioxide are changed into oxygen and glucose during photosynthesis. The plant consumes glucose and produces oxygen as a byproduct.
Oxygen and glucose are transformed into water and carbon dioxide during cellular respiration. By-products of the process include carbon dioxide, water, and ATP, which is turned into energy.
To power cellular respiration, photosynthesis uses the energy it produces. During photosynthesis, solar energy is used, collected, and stored in the bonds of glucose molecules.
Therefore, photosynthesis and respiration not involve energy formation cycle.
Learn more about photosynthesis and respiration here:
brainly.com/question/24514685
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Answer:
B
Explanation:
food source deals with agriculture aka farming
