Answer:
Chitin, is the third layer of the cell wall of fungi.
Explanation:
As other living things, the cell wall is made by different compound, this allowed to protect and to pass some nutrients inside the cell.
The first layer is made by nanoproteins, these molecules provides structure and protection. The second one is made by glucans (some carbohidrates), that allows to carry some nutrients or wastes inside or outside the cell. The third one is made by chitin. Next to the cell wall it comes the cell membrane with their proteins and lipids.
Answer:
Reflexes are not a function of the spinal cord.
Explanation:
The spinal cord is part of the central nervous system and is made up of neurons that go along it (from the end of the brain stem almost to the bottom of the spine).
The spinal cord receives incoming messages from the peripheral nervous system (including the sensory neurons) and pass on messages from the brain to efferent neurons (motor neurons at muscles).
The spinal cord contributes to learning as it passes on the info received from sensory neurons (that there is an obstacle in the path) to the brain and passes on the response from the brain to the muscles (to lift the foot up higher).
The spinal cord is essential for integration as it passes on sensory information to the brain to determine motor output.
Reflexes are when sensory information is quickly sent straight to motor neurons to move. It does not need to go to the brain (hence does not need to go to the spinal cord) for the reaction as it would be too slow. This is seen when someone who is paraplegic (paralysed at lower torso) can still move their leg in response to the doctor tapping their knee even when they cannot forcibly move their legs.
Therefore reflexes are not a function of the spinal cord.
Answer:
A.Scientists did not know how traits were inherited
Answer:
This is a really good question.
Explanation:
Looking it up now.
Answer: A. a ring of actin filaments forms at the metaphase plate. The ring contracts, forming a cleavage furrow, which divides the cell in two. In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast.
Explanation:
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