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Lerok [7]
2 years ago
12

PLZ HELP 20 POINTS

Biology
1 answer:
valina [46]2 years ago
5 0

Answer:

There are 8 electrons in the outer ring, and has to react with 8 or fewer electrons to form a stable molecule.

Explanation:

The outer-most orbits of  silicon contains a maximum of eight (8) electrons. It requires 8 of fewer electrons to form a stable molecule.

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The circulatory system keeps the blood and tissues continuously oxygenated.It does this by having
Natali5045456 [20]

Answer:

Following are the solution to this question:

Explanation:

The circulatory system is also known as the cardiovascular system or the vascular system, which allows blood to flow from cells in the body continually oxygenates the skin and tissue. It will take blood and oxygen from certain tissue to the tissue and veins, but deoxygenated blood to the lungs from the tissues.

4 0
3 years ago
Class ii mhc proteins are found on which of the following cell types?
Bogdan [553]

Answer:

The answer to the question: Class II MHC proteins are found on which of the following cell types, would be: on macrophages and lymphocytes, particularly T-Cells.

Explanation:

MHC, or Major histocompatibility complex, is a very important part of the immune response that the body gives against an invading pathogen, or other foreign substances. There are three types in the human body, Class I, Class II and Class III and each of them will play a role on the cellular membrance of different types of cells and mediate different types of responses. In the human body, this histocompatibility complex is best known as HLA, or human leukocyte antigen, and it will ensure the recognition, or non-recognition of substances, tissues, and other organisms, by the human immune system. Class II, as mentioned before, are most usually found on the immune cells macrophages and lymphocytes, and they are the ones responsible for presenting antigens to these proteinic antibodies so that the immune cells can initiate a proper immune response.

5 0
3 years ago
The secretion of tears, milk, sweat, and saliva are functions of what tissue
drek231 [11]

The tissue that corresponds to this would be epithelial

4 0
2 years ago
100 points I need help please will give brainliest :(
Licemer1 [7]

Answer: One of the most common Monera is Escherichia coli, also known as E. coli.  "[E. coli] is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms." States wikipedia.* Signs of E. coli are stomach pains and cramps, diarrhea that may range from watery to bloody, fatigue, loss of appetite or nausea, vomiting, and low fever < 101 °F/ 38.5 °C (not all people have this specific symptom).

   E. coli comes from human and animal wastes. During precipitation, E. coli may be washed into creeks, rivers, streams, lakes, or groundwater. Another way to get it is from contaminated food, a lot like corona virus. When cattle are slaughtered and processed, E. coli bacteria in their intestines can get on the meat. And when ground beef is made, it combines meat from many different animals, increasing the risk of contamination.

Explanation:

4 0
2 years ago
Read 2 more answers
Answer ASAP 50 points
Mnenie [13.5K]

Answer/Explanation:

In humans, we breathe in oxygen via the respiratory system. The oxygen enters the lungs. The air sacs in the lungs - the alveoli - are the site of gas exchange in the lungs and are where the circulatory and respiratory systems interact.

The alveoli take in the oxygen, where it diffuses into the capillaries (circulatory system). Blood, which passes through the capillaries takes this oxygen to all the cells in the body. Oxygen binds to haemoglobin in red blood cells, which transport it around the body.

Additionally, blood also transports carbon dioxide back to the alveoli of the lungs, where it diffuses into the lungs and is expelled when we breathe out

3 0
3 years ago
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