ANSWER.
Explanation:
when one of the links in the food chain is no longer present the food chain breaks.sometime this can cause other animals in the food chain to disapper as well and the whole ecosystem can beome in balance or even colapse
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.
hope this helps
Answer: Young children
Explanation: Resistance to food borne illnesses develops through exposure to small amounts of food borne pathogens. The longer the exposure, the greater the buildup of immunity. Young children are more likely to succumb to food borne illnesses due to lack of exposure to pathogens, and resultant lack of resistance to them.
Climate change cannot be
measured with a single instruments but require thousands of measuring devices
that spread across the globe, land and under the sea. Thus,parameters
measured in climate change includes: Rainfall, Sunshine hours, Temperature, Relative
humidity, Atmospheric pressure, Wind speed .
However, there are various instruments used for the measuring of climate
change and they can be classified as follows: weather balloons and buoys, thermometers, wind anemometers,
Manual rain gauges, transmitting rainfall gauges and Automatic Weather
Stations
