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Volgvan
3 years ago
10

What powers the movement of material in the mantle

Biology
1 answer:
VMariaS [17]3 years ago
4 0
It is heat, convection cells in the asthenosphere cause the movement of the crust.
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She didn't ask for medical attention. If she had then the doctors would have done something to save her.
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Explain why people with emphysema suffer from shortness of breath​
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Because Theyr lungs don’t get enough air they are supposed to
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Thalidomide and l-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that _____.
klemol [59]

Answer;

-are mirror images of one another.

Thalidomide and l-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that are mirror images of one another

Explanation;

-Enantiomers are chiral molecules that are mirror images of one another. Furthermore, the molecules are non-superimposable on one another. This means that the molecules cannot be placed on top of one another and give the same molecule. Chiral molecules with one or more stereocenters can be enantiomers.

Enantiomers have identical chemical and physical properties in an achiral environment. They rotate the direction of plane polarized light to equal, but opposite angles and interact with other chiral molecules differently.

4 0
3 years ago
Hello, people of planet earth, I need help with a question for my friend Steve in science class, here on planet Neptune it is pr
ICE Princess25 [194]
The paramecium has two nuclei, a big and small one. The big one operates as the director of the cell's activities, rather like a little brain. The smaller one is used for reproduction. The paramecium splits in half (fission) just as the ameba does. First the smaller nucleus splits in half and each half goes to either end of the paramecium. Then the bigger nucleus splits and the whole paramecium splits. Occasionally two paramecium exchange material and form a new paramecium. This is called conjugation. 

<span>Conjugation in Paramecia occurs in the following way: </span>

<span>a). The formation of ciliary contacts. </span>
<span>b). Local loss of cilia and formation of narrow contacts between anterioventral somatic cell membranes </span>
<span>c). Formation of small cytoplasmic bridges (which allow for the exchange of molecular components only). </span>
<span>d). Their enlargement enables the cells to exchange micronuclei. </span>

<span>Bacteria exchange plasmid material and the Paramecia exchange micronuclei.

Good luck to Steve! How is it in Neptune? XD</span>
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3 years ago
What experimental technique or instrumentation was used to determine kinesin step size?
Keith_Richards [23]

Answer:

Optical trapping interferometry

Explanation:

Optical trap is a device which can measure forces or dielectric objects of magnitude of Pico newton or micron.  

In this,  a high focused light beam is used to view objects under the  microscope. It is highly used in molecular and cell biology and biophysics

This methodology has been adapted to sort lipids at cell surface and in activation of kinase in the dendritic cells

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