Answer:
Ligand-receptor interaction is the first interaction that triggers cell signalling.
Ligands are the hormones, drugs or neurotransmitters that specifically bind with receptors present in cell surface to initiate cell signalling. Ligand binding to the receptor is reversible. Binding of the ligand to the receptor can activate or inactivate receptor. Activation may lead to cell signalling pathways. Inside cells, there are secondary molecules which on activation starts a cascade of reactions. which in-turn regulate the function of the ligand molecule.
At first, the activated receptor relates with G proteins molecules in the cell.
before the ultimate physiological effect of the ligand on the cell's behavior is produced Therefore, the cellular signaling starts as soon as the first messenger (the ligand) binds to its receptor.
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<span>growth of organisms in the broth i hope this helps
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Emission of toxin and generation of ash is related only with incinerators. Draining of liquid and requirement of substantial amount of land is related with landfills only. Generation of energy and release of greenhouse gases is related with both landfills as well as incinerators.
<h3>What are incinerators?</h3>
An incinerator is a waste-burning furnace. Pollution control equipment, such as flue gas cleaning, is included in modern incinerators.
Incinerator plant designs include moving grate, fixed grate, rotary kiln, and fluidized bed.
The descriptions can be as follows:
- Generation of energy - Both, landfills produce methane gas, which is used to generate electricity, and incinerators produce heat energy, which is also used to generate energy.
- Emission of toxins through combustion - Incinerators emit dioxins, a hazardous chemical.
- Draining of liquids into the ground - this is a common problem at all landfill sites.
- Emission of greenhouse gases - Both landfills and incinerators emit methane and other carbon gases.
- Necessitates a significant amount of land - landfill site, necessitates a large amount of land to dump city waste
- Production of ash - Incinerator only.
Thus, these can be the description applies to landfills, incinerators, or both.
For more details regarding an incinerator, visit:
brainly.com/question/9642236
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<span>The question says, vertebrates have notochord during early embryonic development. The statement is true. A notochord is a cartilaginous skeletal rod which support the body in all embryonic and some chordate animals. It has essential role in vertebrate development. It is a primitive beginning of the spinal cord.</span><span />
Answer:
Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today. Paleontologists can determine the age of fossils using methods like radiometric dating and categorize them to determine the evolutionary relationships between organisms.
Explanation:
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