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chubhunter [2.5K]
3 years ago
14

How do geologists know that earths core is made up of two parts ,please answer as soon as possible that would be great :)

Biology
1 answer:
Gnesinka [82]3 years ago
8 0
They drill holes and bring up samples of rock and study how seismic wave move through the earth.
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In animals, cell recognition:
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Answer:

The correct answer is D.  involves proteins in plasma membranes.

Explanation:

Animal cells have several types of proteins embedded in their cell membrane. These proteins play an important role in the transport of molecules, cell recognition, and cell communication.  

Recognition proteins are a type of glycoproteins present in the plasma membrane that allow one cell of the body to recognize the other body cells by making contact with recognition proteins of other cells. Receptors proteins allow cell-cell communication by receiving extracellular proteins.

These proteins are important for proper growth and development of the cell. Therefore the correct answer is D.  involves proteins in plasma membranes.

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How does DNA in offspring produced by asexual reproduction compare to DNA in offspring produced by sexual reproduction
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4 years ago
As part of your summer research project, your professor has asked you to perform comparative genomic hybridization (CGH). He giv
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