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lesantik [10]
3 years ago
7

What do carbon dioxide, light energy, water have in common

Biology
1 answer:
Dmitry [639]3 years ago
4 0
They are all necessary for photosynthesis to occur.
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What is the function of the nervous system? What is the basic unit of the nervous system?
Sidana [21]

Answer:

Illustration of the architecture of a neuron, including the cell body, nucleus, dendrites, axon, myelin sheath, node of Ranvier, synapses, and axon terminal. ( the photo with the answer )  

The nervous system has two main parts:

The central nervous system is made up of the brain and spinal cord.

The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

The nervous system transmits signals between the brain and the rest of the body, including internal organs. In this way, the nervous system’s activity controls the ability to move, breathe, see, think, and more.

The basic unit of the nervous system is a nerve cell, or neuron. The human brain contains about 100 billion neurons. A neuron has a cell body, which includes the cell nucleus, and special extensions called axons and dendrites. Bundles of axons, called nerves, are found throughout the body. Axons and dendrites allow neurons to communicate, even across long distances.

Different types of neurons control or perform different activities. For instance, motor neurons transmit messages from the brain to the muscles to generate movement. Sensory neurons detect light, sound, odor, taste, pressure, and heat and send messages about those things to the brain. Other parts of the nervous system control involuntary processes. These include keeping a regular heartbeat, releasing hormones like adrenaline, opening the pupil in response to light, and regulating the digestive system.

When a neuron sends a message to another neuron, it sends an electrical signal down the length of its axon. At the end of the axon, the electrical signal changes to a chemical signal. The axon then releases the chemical signal with chemical messengers called neurotransmitters into the synapse     the space between the end of an axon and the tip of a dendrite from another neuron. The neurotransmitters move the signal through the synapse to the neighboring dendrite, which converts the chemical signal back into an electrical signal. The electrical signal then travels through the neuron and goes through the same conversion processes as it moves to neighboring neurons.

The nervous system also includes non-neuron cells, called glia . Glia perform many important functions that keep the nervous system working properly. For example, glia:

1-  Help support and hold neurons in place

2- Protect neurons

3- Create insulation called myelin, which helps move nerve impulses

4- Repair neurons and help restore neuron function

5- Trim out dead neurons

6- Regulate neurotransmitters

The brain is made up of many networks of communicating neurons and glia. These networks allow different parts of the brain to “talk” to each other and work together to control body functions, emotions, thinking, behavior, and other activities.

Explanation:

5 0
3 years ago
Read 2 more answers
What were Louis Pasteur's experiments related to spontaneous generation?
Tamiku [17]
Spontaneous generation was a (refuted) theory that some forms of life can arise from inorganic matter. 

Louis Pasteur refuted it in a series of experiments, in which he boiled different matter (grape juice, broth) which would kill all the bacteria and let it stay for a long time to see if it would develop life (he also had a control condition in which he let the boiled liquid interact with the outside words, and those would develop bacterial life). 
4 0
3 years ago
During embryonic development, if the anus develops before the mouth, the organism is a _____.
aliya0001 [1]
<span>The question says, 'during embryonic development, if the anus develop before the mouth, the organism is a ............ The correct option is B. In deuterostome during embryonic development anus develops first from or near embryonic blastopore, mouth develops later at some distance from the blastopore or from the opposite end.</span>
8 0
3 years ago
What is the term for an observable trait of an organism??
babymother [125]
I believe the term for an observable trait of an organism would be called or noted as the organism's phenotype.
7 0
3 years ago
Local farmers think that a commonly used pesticide is responsible for the increase in appearance of frogs with an additional app
stira [4]

Answer:

D.-

Explanation:

A control group is needed to carry out the experiment, that control group is the one that is not injected with anything.  Ethanol and pesticide need to be injected into separated groups to document whether it is one or the other that is harmful

4 0
3 years ago
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