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natima [27]
3 years ago
12

The Blank makes up the cell membrane, which acts as a flexible protective boundary for the cell.

Biology
2 answers:
spin [16.1K]3 years ago
8 0
The Lipid Bilayor makes up the cell membrane, which acts as a flexible protective boundary for the cell
Fittoniya [83]3 years ago
3 0
It is made from the glycoprotein murein.
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Answer:

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Explanation:

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Pteridophytes are a group of plants that peaked in the Carboniferous (-300 million years). It is the first great terrestrial plant civilization. These plants would have appeared in the Devonian -400 million years ago, perhaps from certain primitive terrestrial plants which, unlike bryophytes, would have favored the diploid generation on the haploid generation.

Particularly well adapted to terrestrial life, they have created, thanks to the development of tree forms, immense forests whose fossilization is at the origin of coal deposits.

Pteridophytes are at the origin of an evolutionary lineage based on the extreme miniaturization of gametophytic generation and an important development of sporophytic generation, leading to all tracheophytes including current flowering plants. Pteridophytes are well adapted to terrestrial life, however fertilization still requires the presence of water since male gametes are swimmers.

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3 years ago
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Dafna11 [192]
I think the answer here is neurons, the nerve cells
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