The control group is the group that does not receive the experimental treatment. Experimenters use the control group to compare it to the experimental group in order to determine if the treatment had an effect. So, if there is the same result in both groups (decrease in the grass blades) it means that the given treatment had no effect on the experimental group and that the decrease is due to some other conditions.
More personal questions ask an adult
Either way add all the pieces together you still have 2 grams
Hormone – biologically active molecule that is released into circulation from site of synthesis and acts at a distant sitecan be either hydrophilic (polypeptide hormone) or lipophilic (steroid) – biogenic amines can be eitherbinds specific receptor – on cell surface (hydrophilic hormones) or inside cell (lipophilic hormones)lipophilic hormones bind carrier proteins to travel in circulation; hydrophilic hormones travel freelycis-acting elements – DNA segments in the promoter region which bind trans-acting elementstrans-acting elements – molecules that impact downstream gene transcription when they bind cis-acting elements
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.
