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3 years ago

A neuron transmits information by the secretion of hormones. True or False

Biology

2 answers:

ser-zykov [4K]3 years ago

7 0

Answer:

i believe it is false

Explanation:

grandymaker [24]3 years ago

4 0

Answer:

The given statement is false.

A neuron is the basic structural and functional unit of the nervous system. It helps in transmitting information from one neuron to another neuron, gland, or muscle cell.

The conduction of nerve impulse is electrochemical in nature. It transmits the impulse electrically through the axon the nerve cells and chemically through synapses (gap between two nerves cells).

The axon terminals of pre-synaptic nerve cell release chemical messengers (also called neurotransmitters) in the synaptic cleft. These messengers then bind to the receptors present on the post-synaptic nerve cell and regenerate the nerve impulse.

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In 3–5 sentences, compare and contrast the flow of matter and energy in each trophic level for land-based ecosystems and marine

Mnenie [13.5K]

Answer:

Unlike matter, as energy flows through an ecosystem in one direction, from photosynthetic organisms to herbivores to omnivores and carnivores and decomposers, less and less energy becomes available to support life.

Explanation:

Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next.

Energy is acquired by living things in three ways: photosynthesis, chemosynthesis, and the consumption and digestion of other living or previously-living organisms by heterotrophs.

Living organisms would not be able to assemble macromolecules (proteins, lipids, nucleic acids, and complex carbohydrates) from their monomeric subunits without a constant energy input.

4 0

3 years ago

Read 2 more answers

From your knowledge about the distribution of electrons in the levels and from the atomic number (in parentheses), indicate the

insens350 [35]

It will hold +2 charge

3 0

3 years ago

nekit [7.7K]

Answer:

To understand “Untouchability” you need understand our varna-vyavastha or simply called “Caste System”. Caste does not mean or is not the right translation for Varna/Jaathi/etc….. We(Hindus) had our varna-vyavastha (vv) based on the persons capabilities/skill/knowledge/understanding nature/patience & many more…..

As a group head (village/society/land), people needed to be divided to different functions of life…..

To survive, we need food. So gatherers/foragers were formed. Slowly this group increased to others ways/modes of food gathering, such as farmers, shepherds, etc…

In the meantime, while few were producing/collecting food items, people were needed to manage the production & distribution.

Very good, so far. But, people can’t eat the same stuff, every day & do the same job, as well. Getting bored. So, intelligence/creativity was needed. People with innovative minds gathered together & formed certain recipes/methods/etc…. Slowly this became tradition/culture/etc.

Now comes the problem. Intelligent/Innovative people are good at this. “How to control them?” is the question. So people with creativity/innovation/intelligence/etc & physical skill/strength were required. They had knowledge of the previous 3-types of works of life. Additional qualification was their physical strength & skills. These were few who had the ability to hunt, as well. Be it day or night.

In every walk of life, there are people who make mistakes or commit a crime. These people need to be punished. But, if we keep them within the village/land premises, they might not realize their mistakes or repent for their crimes. So a separate location is required. Problem is, if we keep them enclosed outside of society like in a jail, they will behave/become more like animals/savages. It is human nature. So, a new society needs to be formed, where these people can make their living, but still face punishment.

These type of people are basically worker class. Hence, these were called Sudras/Soodras.

These type of people are merchants. Hence, these were called Vysyas.

These type of people are administrators. Hence, these were Brahmins.

These type of people are rulers/kings. Hence, these were Kshatriya. Kshatriya means one who has warrior/soldier/fighter qualities/capabilities/etc.

These type of people are outcasts. Hence, the “Untouchables”

8 0

3 years ago

Read 2 more answers

Diagram of paramecium

marin [14]

This is a diagram of a paramecium.

8 0

3 years ago

Deciding between recycling of conventional plastics and developing biodegradable plastics is a complex issue because:___________

Julli [10]

Answer:

Conventional plastics-

"Plastics are typically organic polymers of high molecular mass, but they often contain other substances."

Composition-

"Oil-based polymers is currently used in packaging applications. These are virtually all non-biodegradable, and some are difficult to recycle or reuse due to being complex composites having varying levels of contamination.

Biodegradable plastics-

"They are largely manufactured from renewable natural resources, to produce biodegradable materials with similar functionality to that of oil-based polymers."

Explanation:

Complex Issue-

Diversity of biodegradable materials and their varying properties makes it difficult to make simple, generic assessments such as biodegradable products are all ‘good’ or petrochemical-based products are all ‘bad’.

Biodegradable packaging materials are most suitable for single-use disposable applications where the post-consumer waste can be locally composted.

3 0

3 years ago