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Marrrta [24]
3 years ago
7

4) Empress Si-Ling Chi observed _________ in her garden.

Biology
1 answer:
emmasim [6.3K]3 years ago
7 0
The answer is: B) silkworms.

“While sitting in her garden she deduced the secret of silk by watching the silkworms. She developed the process to remove the thread from the cocoon and set up silk cultivation farms and the weaving of the new cloth.” (Source: http://4kyws.ua.edu/SI_LING_CHI.html)
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The grants data showed that natural selection takes place
Svetradugi [14.3K]
<h3><u>Answer;</u></h3>

D) frequently, and sometimes rapidly

<h3><u>Explanation;</u></h3>
  • The hypothesis that the Grants have been testing was about the natural selection shaping the beaks of different bird populations.
  • <em><u>The Grants documented that natural selection takes place in the wild finch population frequently, and sometimes rapidly. </u></em>
  • The Grants' work showed that variation within a species increases the likelihood of the species' adapting to and surviving environmental change.
8 0
3 years ago
the fluid mosaic model defines the plasma membrane as a structure composed of multiple components, including phospholipid bilaye
Eva8 [605]

Answer: True

Explanation: The plasma membrane is a membrane the protects the cell and its environment. It regulates what goes inside and what comes out of the cell. .

Plasma membrane as a structure composed of multiple components, including phospholipid bilayer, carbohydrates, and other lipids. The phospholipids possess one head and two tails. The head is basically polar and hydrophilic (water-loving) while the tails are non-polar and hydrophobic (water-fearing).

The plasma membrane is decorated with proteins. Some protiens are extrinsic proteins that run halfway through the membrane, while others are called integral proteins that go entirely through the membrane. The function of these proteins is to serve as channels to allow the molecules to enter and leave the cell.

7 0
3 years ago
Please help ASAP this needs to be turned in at 4:30 pm
dangina [55]

Answer:

Explanation:

1.A.

2.C.

3. D

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8 0
3 years ago
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Cilia are composed of microtubules. How are microtubules different from the other cytoskeletal filaments?
Maru [420]

Answer:

They are thick, strong and made up of thousands of tubulin which are spiral in shape.

Explanation:

In eukaryotic cells, they have microtubules which are fibres serving as tracks for cell to cell transport and regulate the shape of a cell.

Microtubules are different from other cytoskeletal filaments because they possesses a cylindrical shape with the tube having a larger diameter of 20-25 nm as compared to microfilament that have a diameter of 3-6 nm.

Microtubules are made of subunits of proteins called tubulin named alpha and beta that is not present in other cytoskeletal filaments.

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3 years ago
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Eduardwww [97]
The graph is showing us the tide height in feet in the left side and the hight up and down.
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2 years ago
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