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Leokris [45]
3 years ago
15

1. How did the term "planet" originate with the Greeks?

Biology
1 answer:
viktelen [127]3 years ago
8 0
The greeks believed the Earth was stationary at the center of the universe while objects in the sky revolved around it. The Greek astronomers employed the term Asteres planetai meaning “wondering stars” for star like objects. By the 19th century the word planet thought it hadn’t been defined was the working term applied
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What is the probability that a heterozygous black guinea pig crossed with a white one will produce a white offspring?
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It’s 50/50 I’m pretty sure
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Why are lipids and proteins free to move laterally in membranes?
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D. There are only a week Hydrophobic interactions in the interior of the membrane.
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Scenario: You are a research scientist and are working with eukaryotic cells obtained from a newly discovered organism, Oviductu
Minchanka [31]

Answer:

  • Based on this information you come to the conclusion that you have been able to identify in these cells the structure of <em>microfilaments</em> or <em>actin filaments</em>.
  • <em>Oviductus oblatus</em> are indeed eukaryotic cells

Explanation:

In eukaryotic cells, the cytoskeleton is composed of three well defined filamentous structures: microtubules, microfilaments, and intermediate filaments. Each of these filamentous structures is a <u>polymer of proteinic subunits</u> united by weak, not covalent connections.

The microfilaments are the thinnest of the three structures. They have a <u>diameter of 7 nanometers</u> and are <u>composed of many proteinic monomers</u> united. This monomeric protein is called actin. Many monomers get combined to form a structure that assembles a double helix.

Due to the fact that these microfilaments are made of actin monomers, they are also known as actin filaments.

Actin filaments have directionality which means that their extremes have different structures.

In eukaryotic cells, genes that codify for actin microfilaments are highly conserved in all organisms, which is why <u>they are often used as molecular markers</u> for different studies.          

7 0
3 years ago
What did you think about alexis's strategy of surfing the web and looking at self help books at the book store to better underst
kodGreya [7K]

If she's learning about like how she was made its best to look at books with the right information.


If its like to help her figure out who she is as a person then she should maybe take a day to go out to a quiet place like a nature trail and think about it.

7 0
3 years ago
Read 2 more answers
How is an agglutination reaction different from a precipitin reaction?
meriva

Cells clump together during a process called agglutination as a result of the accumulation of antigens and antibodies.

Immune complexes are created when soluble antigens are brought together by the appropriate antibody molecules, and they become visible when they are big enough to precipitate out of the solution.

  • The interaction between antibody molecules and the associated antigen molecules causes both agglutination and precipitation processes.
  • Agglutination, on the other hand, is the clumping of cells that occurs when one antibody binds several antigens at once.
  • Contrarily, precipitation occurs when soluble antigens and soluble antibodies interact to form a clear, insoluble substance known as the precipitate.
  • Agglutination takes place when a target antigen, also known as isoagglutinin, interacts with a corresponding antibody in the presence of an electrolyte at the right temperature and pH, leading to the development of apparent clumps or aggregates.
  • Precipitation happens when an electrolyte, an antigen, and a soluble antigen interact at the right temperature and pH to create cross-links or precipitates that sink to the bottom of the solution.

learn more about agglutination here: brainly.com/question/13022582

#SPJ4

8 0
2 years ago
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