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fenix001 [56]
3 years ago
15

The brain and spinal cord are covered by

Biology
2 answers:
ivann1987 [24]3 years ago
7 0
The brain and spinal cord are covered and protected by 3 thin layers of tissue (membranes) called the meninges
Hitman42 [59]3 years ago
4 0

Answer:the correct answer is c. meninges.

Explanation:

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natulia [17]

Answer:

heyyy im in highschool i can help

4 0
3 years ago
in general, a species' _____ niche will be smaller than its _____ niche due to interactions with other organisms in the communit
andre [41]
<span>In general, a species' realized niche will be smaller than its fundamental niche due to interactions with other organisms in the community.
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7 0
3 years ago
If all the leaves are removed from a lycophyte, which process would affected?
Pepsi [2]

Respiration and photosynthesis because both happen through the leaves of any plant.


7 0
3 years ago
Read 2 more answers
why do polysaccharides like cellulose and peptidoglycan able to resist degradation and enzymatic activity
mixer [17]

Polysaccharides like Cellulose form insoluble micro-fibrils making it resistant to degradation and enzymatic activity.

<u>EXPLANATION: </u>

  • Polysaccharides components in general broken down monosaccharides and they are very little enough to be absorbed by the body.
  • But the polysaccharide like cellulose cannot be absorbed by our body.
  • Cellulose is made up of simple polymers that form insoluble micro-fibrils results in resistant to degradation and enzymatic activity.
  • Also, molecules of each micro-fibril are so tightly packed structure and prevent the penetration of enzymes.
  • Thus, cellulose degradation requires a complex enzyme and cellulose.
7 0
3 years ago
Suppose that a certain gene functions to enforce a checkpoint on the cell cycle. A mutation causing the loss of this gene's func
chubhunter [2.5K]

Answer:

The correct answer is C. be more likely to have cancer at some point in his/her life.

Explanation:

Cell cycle checkpoints are controlled by different proteins which are coded by different genes. They are important in cell cycle regulation and stops cell cycle immediately if they find any problem in the cell like mutation.

The cell cycle will not be continued if the problem does not solve and cell death will occur which prevents cancer by preventing the mutation to spread into new cells.  

Therefore if a mutation occurs in certain genes that enforce a checkpoint on the cell cycle then the mutated gene will pass in new cells and the mutated cells will grow uncontrollably due to no checkpoints so the person will probably have cancer at some point in his or her life.

7 0
3 years ago
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