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2 years ago

In several neurological diseases, axons lose their insulating myelin sheath. what is the consequence of this loss

1 answer:

7 0

In unmyelinated axons, the action potential (nerve impulse) travels continuously along the axons and thus, the conduction of nerve impulse is slower. The loss of myelin sheath is called demyelination and is the hallmark of some neurodegenerative autoimmune diseases like multiple sclerosis or acute disseminated encephalomyelitis. Demyelination interrupts signals between the brain and other parts of the body and it includes symptoms like loss of vision/hearing, blurriness in the central visual field, double vision, weakness..

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Two species of tree frogs that live sympatrically in the northeastern United States differ in ploidy: Hyla chrysoscelis is diplo

Artist 52 [7]

Answer:

The correct answer is - polyploidy.

Explanation:

Speciation can be two types allopatric and sympatric speciation. Sympatric speciation is the process of speciation is developing the new species that diverged from the common ancestral species while the ancestral and developed species both can share the same place or geological area. The main cause of such speciation is due to the change in their genetic level more than environmental conditions.

In this case, the frog's species show differences in their ploidy level as well as their mating call but polyploidy is the most likely the difference that evolved first rather than females call for mating.

Thus, the correct answer is - polyploidy.

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3 years ago

Amino acids are processed by the liver. Describe this process.

inessss [21]

Regulation of amino acids

When amino acids are absorbed by liver cells a series of chemical reactions begins. ... The amine group is reduced to ammonia by the addition of a hydrogen atom. This process is called deamination. The non-nitrogenous portion of the molecule is converted to carbohydrates or fats.

6 0

3 years ago

Are all human cells capable of mitosis and cell division? How does this affect the body's ability to repair itself? Support your

WITCHER [35]

Mitosis and cell division are possible in all human cells. Mitosis has several functions in the organism, including growth, cell repair, and some forms of reproduction. Humans make two types of cells. Body Cells and Reproductive Cells are two types of cells. Mitosis employs diploid cells to attack viruses and bacteria while also repairing cells.

6 0

2 years ago

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3. What are some examples of fluctuations in abiotic cycles?

ipn [44]

Answer:

1.The carbon cycle.

2.The nitrogen cycle.

3.The water cycle.

4.The sulfur cycle.

5.The phosphorus cycle.

6.The rock cycle.

Explanation:

Hope this helps you 

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4 0

2 years ago

The illustration shows one of the ways resources are removed from the deep sea. Describe what type of resources these are, inclu

just olya [345]

Answer:

Marine mining is a process that can be done by dredging the seabed and is used for the extraction of mineral resources from the seabed, which are non-renewable, with a negative impact on marine ecosystems.

Explanation:

The illustration shows a process of marine mining by dredging, where the resource extracted is of a mineral nature, like copper, zinc, silver and gold. Gravel used for construction can also be extracted from the sea. Mineral resources extracted from the sea are not renewable.

The process of marine mining can be harmful to the ecosystems there, so it must be a process that requires control and management from the ecological point of view.

Two possible consequences of not regulating marine mining are:

Destruction of the habitat of life forms present on the sea floor, which endangers many species and even forces migration to more stable areas, with consequences on the food chains.
Extinction of marine species that inhabit the seabed. The flora and fauna of the sea floor usually have slow reproductive cycles and, in the case of fish, spawning takes place on the bottom of the sea. Mining endangers the reproductive cycles of the species, leading to induced extinction.

Responsible and controlled mining activity can be useful for humans, while avoiding negative consequences on the ecosystems that exist at the seabed.

7 0

2 years ago

Read 2 more answers