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OLEGan [10]
3 years ago
11

How would the orbit of the Earths change of sun suddenly dissapear

Biology
1 answer:
solong [7]3 years ago
4 0
If<span> that were true, then the first thing that </span>would<span> happen when the </span>sun disappeared<span> is that </span>Earth<span>, along with all the other planets, </span>would<span> go flying off into space. It </span>would<span> be complete and utter chaos in our solar system. ... Therefore, we </span>would<span> still see the </span>sun<span> in our sky eight minutes after it was </span>gone<span>.</span>
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Name an organism in each domain: archaea, bacteria, eukarya
scZoUnD [109]

Answer:

Explanation:

archaea:they live in water area and usually eat some plants

bacteria:the germs that are in the air

eukarya:it is an animal well better said any animal because it has a cell membrane and nucleus to protect the cell

7 0
3 years ago
What is the Division of somatic cells that involves duplication of DNA in diploid # called
Rama09 [41]

This would be Mitosis.

Mitosis results in two diploid cells.

Meiosis, on the other hand, results in four haploid cells.

3 0
3 years ago
Is blood clotting an example of a positive or negative feedback mechanism? Explain your answer based on the description of the m
serg [7]

Answer:

Blood clothing is an example of positive feedback.

This type of feedback mechanism is useful to the body because it multiplies the factor that intervenes in clotting accelerating the process.

If a toxin affects the molecules that signal for platelets the feedback will not be effective enough to produce clotting and the body will keep bleeding.

Explanation:

Blood clotting is an example of positive feedback due to the fact that when the vascular endothelium is damaged  platelets will go to this area and activate themselves once they are in contact with the collagen fibers of the damaged structure. When the platelets are activated they will release the contents that is stored in their granules. One of the contents is a Gq-linked protein receptor cascade,  that will increase the concentration of calcium in the platelets. Calcium activates protein kinase C, which, in turn, activates phospholipase A2 (PLA2). PLA2  will modifies  an  integrin membrane  increasing its affinity to bind fibrinogen. The activated platelets change their  shape , and the fibrinogen cross-links with the integrin membrane aiding  in  the aggregation of adjacent platelets. After this the coagulation cascade takes place. there are two pathways the extrinsic  and the extrinsic one.

The extrinsic pathway will be activated due to tissular factor released  by the platelets and the intrinsic pathway will be activated due to endothelial collagen. The final product of both pathways is factor x.

Factor x will transform prothrombin into thrombin will activate the conversion of fibrinogen into fibrin. Thrombin will form a net of fibrin that will the clot.

A cascade reaction is useful because every component of the cascade are related making a quick reaction once that one of then is activated and can activate other or more factors.

If a toxin affects the molecules that signals for platelets, platelets will not go to the damaged area and in consequence there will not be thrombin and fibrin to form the clot together with platelets.

7 0
3 years ago
Im so sorry if im asking alot of questions but i dont know anything so can someone help me ?
nirvana33 [79]

Answer:

The homogeneous mixture is only in the one phase of matter, whereas heterogeneous mixture is always in two or more than two different phases of matter. Solutions are termed as the homogeneous mixtures, on the other hand, suspensions or colloids are termed as the heterogeneous mixtures.

Examples:

Homogeneous:

Bronze: this alloy is an example of homogeneous substances since it is composed of tin and copper.

Milk : this mixture that we see in a uniform way is composed of substances such as water and fats.

Heterogeneous:

Mixtures in two or more phases are heterogeneous mixtures. Examples include ice cubes in a drink, sand and water, and salt and oil. The liquid that is immiscible form heterogeneous mixtures. A good example is a mixture of oil and water.

4 0
3 years ago
What is the average speed of the zebra during the time between 0 and 40 seconds
Genrish500 [490]
The average speed of a zebra is 40mph or 64km.
4 0
3 years ago
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