Answer:
A population of rabbits with
white, tan, and brown fur
lives in a habitat
with few predators.
A new species of hawk
that preys on rabbits
is introduced to the
habitat.
The hawks have more success
in catching rabbits with
white fur because they are
easier to see in this habitat.
The next generation of
rabbits has a higher
proportion of individuals
with tan and brown fur.
The rabbits with white fur
mutate so their fur
is tan or brown.
The founder effect decreases
the number of rabbits
with white fur in
the population.
Amount of Precipitation
the savanna is a desert so it rarely rains, whereas the rain forest gets lots of rain.
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Answer:
The cell membrane would keep expanding in a way that could lead into a process called apoptosis.
Explanation:
As said on the question, in secretion, the same amount of membrane must return to the cell, because, when a cell wants to send something to outside of it, it needs to have a membrane involving it for protection, and the organelle that does that is the Golgi Apparatus.
Once it involves this thing that needs to go outside the cell, this Golgi will be less larger than before, and the plasmatic membrane will be bigger once the exocytosis happen, and if it keeps expanding and not going back, the golgi apparatus would stop working and this cell would program its own death by the apoptosis process.
Answer:
Explanation:
Endocrine cells in the pancreas are referred to as Islets of Langerhan. There are two major types; Beta cell that produce insulin and alpha cells that produce glucagon.
They are identified when viewed under slides based on their colour reactions with histological dyes. Tinctorial techniques that can be used to identify them under microscope includes; Mallory-Heidenhain azan trichrome, chromium hematoxylin and phloxine, aldehyde fuchsin, and silver impregnation methods.
Islets of Langerhan cells make up minority of the cell. Majority of them are for exocrine functions.
