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Nookie1986 [14]
3 years ago
8

What is the nature of "second signal molecules" in signaling pathways?

Biology
1 answer:
Vilka [71]3 years ago
6 0

Answer:

The target receptor is expressed in the membrane, the activity of the receptor can instigate the production of small molecules known as the secondary messengers that coordinate and initiate the intracellular signaling pathways. For example, cyclic AMP is a secondary signal molecule.  

When the signal molecules stimulate the receptor, the signal is carried into the cell generally by means of secondary messengers.  

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Nausea is one of the possible effects of this pollutant on humans.
Luba_88 [7]

Answer:

A

Explanation:

Ground level ozone

hope that help

5 0
3 years ago
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In 1980, the wolf population crashed due to a virus. How many wolves and moose were counted 1980
Tju [1.3M]
Theres not enough info ig
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3 years ago
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The hypothesis that germs desease is theory Before many scientists believed in the idea spontaneres the appearance of organists
il63 [147K]

Explanation:

The Germ Theory of Disease  indicates that microbes are the causal agents in human disease.  In modern healthcare, Germ Theory has led to a breakthrough in the treatment of infectious diseases with antibiotics such as penicillin, and the prevention of disease outbreaks through proper sanitation and vaccination.

Further  Explanation:

Biology's unifying principle states that cells are the basic units of biological organisms. Cells sharing a similar origin, group together in the body to form tissues; these typically share physical features and are arranged in regular patterns. All living things, grow, respire, reproduce etc. these processes are carried out by cells, which are thus integral to their survival.

Before the discovery of cells by Robert Hooke in 1665 with a simple microscope, many scientists had long believed that life rose spontaneously over extended periods of time. Circa 1668 Francesco Redi, challenged the idea of spontaneous generation of maggots from rotting meat by placing meat in various sealed open, partially sealed and sealed containers. Sealed containers did not show the presence of maggots, and he theorized that these were likely from eggs laid on the meat by flies. This was the development of the theory disproving abiogenesis (cells arise from other living cells); this eventually proved the unifying principle we know today.

Cell theory states that living things are comprised of cells, as their smallest units capable of functioning. Microscopy helps to prove this, as cells and their varying components can readily be seen, observed and later classified.

Learn more about cellular life at brainly.com/question/11259903

Learn more about tissue types at brainly.com/question/8487952

#LearnWithBrainly

4 0
3 years ago
The canal connecting the third and fourth ventricles and running through the midbrain is the interventricular foramen.
jeyben [28]

Answer:

The answer is false. The correct answer is cerebral aqueduct.

Explanation:

Because the foramen is the area that connects the third ventricle of the brain to the two lateral ventricles.

The canal connecting the third and fourth ventricles is called cerebral aqueduct.

4 0
3 years ago
The heat from the bonfire is transferred to the student's hands through the process of
Akimi4 [234]
The heat from the bonfire is transferred to the student's hands mainly, but not exclusively, through the process of RADIATION.


There are three mechanisms or processes of heat transfer: conduction, convection, and ratiation.


Conduction is carreid out by contact; it requires that the two objects are touching each other. This is not the case.


Convection is the heat transferred by the movement of the fluids (liquids ang gases). In some extent this happens in this case, but it is not the dominant effect becasue air is not a very good conductor. Specially if there is not much air movement (wind).



Thermal radiation is carried out by electromagnetic waves. When there is a source of intense heat, like the fire, the heat is propagated by radiation.


Then really, the heat from the bonfire gets to the student's hands by convection and radiation, but as fire is very intense (its temperature is very high), and as long as the air is calmed, the dominant process is radiation.  If there is wind, convection starts to be important.
6 0
3 years ago
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