A the cell, definition - the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
Answer:
b. Genetically engineered trees could have unexpected interactions with organisms of natural ecosystems.
Explanation:
A genetically engineered tree has had it's dna undergo certain modifications through the use of genetic engineering techniques. Such trees are made to have faster growth rate, resistance to insects and diseases. Environmentalists are concerned about these trees and how they could affect the natural environment causing adverse effects to the natural organisms of the ecosystem.
In response to a decrease in the concentration of blood <u>oxygen</u>, the kidneys secrete <u>erythropoietin</u>.
In the field of biology, erythropoietin can be described as a hormone that helps in the production of red blood cells (RBC). As red blood cells are the sites that carry oxygen in the blood, more red blood cells mean that the concentration of oxygen will increase inside the blood.
Erythropoietin, which is also referred to as haematopoietin, is produced inside the kidneys. The interstitial cells of the kidneys are the main sites for the production of erythropoietin.
Erythropoietin is produced by the kidneys as a kind of response mechanism when there are decreased levels of oxygen inside the blood. When the oxygen level in the blood reaches a normal level, the production of this hormone is lowered by the kidneys.
Although part of your question is missing, you might be referring to this full question:
In response to a decrease in concentration of blood __________, the kidneys secrete __________.
calcium; renin
oxygen; erythropoietin
sodium; aldosterone
potassium; ADH
glucose; insulin
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Answer:
We know that the TCS cycle / citric acid cycle is a circular process in which there are compounds that are oxidized and recycled, which leads to a permanent consumption of oxygen. We know that compounds such as fumarsto, malsto and succinate contain four carbons and are transformed into oxaloscetate that is composed of four carbons. The cycle returns and begins when acetyl CoA is added and produces citrate that contains 6 carbons. Once again the oxidation of citrate occurs converting into fumarate, malate and succinate, oxidizing up to compounds of four carbons, however when they are completely oxidized, it is not recycled and oxygen consumption decreases, so if there is 10 times less oxygen consumption it will be produced 10 times more in the cyclic case
In the second case, it is observed that when the compounds are recycled, even when oxidation occurs, they reappear in the cycle, which means that they can be detected even if the cell suspension does not consume them.