Answer:
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answer :
None of the progenator cells differentiate into type 2 cells. ( A )
Explanation:
Due to the loss-of- function mutation in the gene for the Notch receptor in the progenitor cell of C elegans , This causes The progenator cells for type 1 to be differentiated to type 1 cells but the cells for type 2 will not be differentiated.
hence the answer is : None of the progenator cells differentiate into type 2 cells.
Answer: Animals release CO2, required for photosynthesis.
Explanation:
Answer:
Organs are made of different kinds of tissues that work together.
Explanation:
All the organs are made of tissues, the organ level is the next level up from tissues. The groups of tissues work together. The tissues are specialized cell group, the animal body is made of 4 types of tissues: epithelial, connective, muscle, nervous.
Organs and tissues are levels of organization. Organs are structures made up of two or more tissues, together they carry out a particular function.
Answer:
POLYADENYLATION mechanism.
Explanation:
This is the mechanism of adding a poly(A)tail to a mRNA to protect the RNA.This tail is made up of adenosine monophosphate(AMP) compound, and therefore consists of only this purine base stretch.(adenine is purines).
Polyadenylation participate in production of mature mRNA for the process of translation in the cystosol, therefore ensuring stability.
However this tail shortened with time, and in extreme shortness the mRNA is degraded by enzymes in the cells.
Conclusively, the protection provided by the poly(A) tail
and production of mature mRNA ensured the stability of these molecules
Answer:
1) The ray population increased.
Explanation:
Two studies on sharks released this month reveal the populations of great whites in the Atlantic and Pacific Oceans are on the rise after a period of harsh decline.
The reports, published in the journal PLOS ONE, indicate the number of great white sharks has rebounded since the population was decimated by overfishing in the 1970s and 80s.
“The good news is that white sharks are returning to levels of abundance,” George Burgess, director of the Florida Program for Shark Research who led a study about great white populations in the Pacific, told the Christian Science Monitor.
The National Oceanic and Atmospheric Administration (NOAA) conducted its study on the great white population along the western North Atlantic, and credits the United States’ 1997 ban on hunting the shark species for allowing the population to replenish.