There are two<span> species of common </span>dolphins<span> - the long-beaked common </span>dolphin(scientific name<span>: Delphinus capensis) and the short-beaked common </span>dolphin(scientific name<span>: Delphinus delphis).</span>
Answer:
because of the constant change of the earths surface
Explanation:
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Answer:
The intracellular molecule produced by the receptor ligand complex is called Second messenger.
Explanation:
Receptors are membrane bound proteins which bind to the ligands which are also called first messengers and cause cellular changes. These intracellular changes are mediated by second messengers such as proliferation, differentiation, migration, apoptosis, transcription, contractions etc. They are specific for specific first messengers such as homones and growth factors. They relay the signals between the ligands to their target molecules in the cytosol or nucleus. Most common second messengers are cAMP, cGMP, DAG, IP3.
Signal amplification by second messenger can be explained by the example of IP3 which cayses the release of Calcium ions from the intracellular stores and cause contractions.
Answer AND Explanation:
Exponential phase is the phase during which growth is rapid. The growth rate is proportional to the amount of material or number of cells of the organism already present. This rapid growth is due to:
- An increase in number of cells dividing following a geometric progression.
- Cells having adjusted to the new environment.
- Food and other factors are not limiting hence cells are not competing for resources.
- The rate of cell increase being higher than the rate of cell death.