Answer:
contractile vacuole
Explanation:
contractile vacuole is used for balance of water,salt etc
Receptors detect changes in the environment. For a stimulus to elicit a response, certain cells must have an appropriate receptor. Stimulation of the receptor initiates a specific signal pathway.
Answer:
interference
Explanation:
one of the best example of interference is demonstrated by the light reflected. from a flim of oil floating on water.
Answer:
The major structural difference between chromatin and chromosomes is that the latter are more organized and condensed.
Explanation:
Chromatin is genetic material packaged into a complex by special proteins (histones). That complex is in the form of uncoiled structures, so chromatin fibers are long and thin. Chromatin structure is permissive to DNA replication, transcription and recombination events.
On the other hand, chromosomes are highly condensed structures of genetic material that are formed just before the cell division.
Answer:
If the type of food available changes, then the frequency of beak also changes.
