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8090 [49]
3 years ago
10

Mention three types of living things​

Biology
1 answer:
Darya [45]3 years ago
5 0
<h3> animal, plants and fungi</h3>

<h3>hope it helps</h3><h3><em><u>carry </u></em><em><u>on</u></em><em><u> learning</u></em></h3>
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Please help me with all of question number 7
Vadim26 [7]
The acronym CHNOPS, which stands for carbon,hydrogen<span>, </span>nitrogen<span>, </span>oxygen<span>, phosphorus, sulfur, represents the six most important chemical elements whose covalent combinations make up most biological molecules on Earth. Sulfur is used in the amino acids cysteine and methionine.</span>
3 0
3 years ago
What are the applications of human nervous cells?
Andreyy89

The human body is made up of trillions of cells. Cells of the nervous system, called nerve cells or neurons, are specialized to carry "messages" through an electrochemical process. The human brain has approximately 86 billion neurons. To learn how neurons carry messages, read about the action potential.

Neurons come in many different shapes and sizes. Some of the smallest neurons have cell bodies that are only 4 microns wide. Some of the biggest neurons have cell bodies that are 100 microns wide. (Remember that 1 micron is equal to one thousandth of a millimeter!).

Neurons are similar to other cells in the body because:

Neurons are surrounded by a cell membrane.

Neurons have a nucleus that contains genes.

Neurons contain cytoplasm, mitochondria and other organelles.

Neurons carry out basic cellular processes such as protein synthesis and energy production.

However, neurons differ from other cells in the body because:

Neurons have specialize cell parts called dendrites and axons. Dendrites bring electrical signals to the cell body and axons take information away from the cell body.

Neurons communicate with each other through an electrochemical process.

Neurons contain some specialized structures (for example, synapses) and chemicals (for example, neurotransmitters).

The Neuron

neuron

One way to classify neurons is by the number of extensions that extend from the neuron's cell body (soma).

bipolar neuron

Bipolar neurons have two processes extending from the cell body (examples: retinal cells, olfactory epithelium cells).

Pseudounipolar cells (example: dorsal root ganglion cells). Actually, these cells have 2 axons rather than an axon and dendrite. One axon extends centrally toward the spinal cord, the other axon extends toward the skin or muscle.

Multipolar neurons have many processes that extend from the cell body. However, each neuron has only one axon (examples: spinal motor neurons, pyramidal neurons, Purkinje cells).

Neurons can also be classified by the direction that they send information.

Sensory (or afferent) neurons: send information from sensory receptors (e.g., in skin, eyes, nose, tongue, ears) TOWARD the central nervous system.

Motor (or efferent) neurons: send information AWAY from the central nervous system to muscles or glands.

Interneurons: send information between sensory neurons and motor neurons. Most interneurons are located in the central nervous system.

Check out the Gallery of Neurons to see some pictures of real neurons or "Sidewalk Cells" to see photographs of neurons on the street.

Hear It

"Neuron" | "Axon" | "Dendrite" |

"Nissl" | "Mitochondria" | "Endoplasmic reticulum"

There are several differences between axons and dendrites:

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3 years ago
List in the correct order the four steps to make human insulin
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Insert dna in plasmid 
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Which Is Indicated By The Arrow
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Covalent bond is indicated by the arrow.
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It could show if the specimen is still functioning
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