The trp repressor blocks transcription of the trp operon (B) when the repressor binds to tryptophan.
trp operon or the tryptophan operon codes enzymes for the amino acid tryptophan. The operon is on when the tryptophan is low in amount whereas the operon is off when the tryptophan is low in amount. The operon is an assimilation of five genes.
Repressor is a small protein that is supposed to prevent the synthesis of proteins. It does so binding to the operator gene. Therefore, presence or absence of repressor is a determining factor for an operon to be on or off.
To know more about trp operon, here
brainly.com/question/28239403
#SPJ4
Answer:
these seemingly dissimilar organisms might have evolved from a distant
Explanation:
Evolution deals with history of organism survival on Earth.
The evolutionary biologists makes use of fossils as proves to give light to having a clear view of how species survived in past times.
Before the theory of natural selection by Charles Darwin, Evolutionary Biologists were filled with questions about why the type of skeletal structural specimens collected were equal and different in dissimilar organisms as it does not exhibit the links seen between these species.
The theory of evolution proposed the mechanism of divergent evolution as a solution to these questions.
Therefore, we conclude that "these seemingly dissimilar organisms might have evolved from a distant" is the right answer.
Answer:
Anabolism builds molecules required for the body's functionality. The process of catabolism releases energy. Anabolic processes require energy. ... Examples of catabolic processes are proteins becoming amino acids, glycogen breaking down into glucose and triglycerides breaking up into fatty acids.
It represents the cycle of life, because a tadpole should turn into a frog.
Answer: Minerals
Explanation: The body decomposes and after about 40 to 50 years bones are mostly brittle and dry with no traces of flesh. After thousands of years bones also disintegrate (decay) leaving brittle mineral frame. The life of bones is determined by the soil type its buried in, nuetral soils takes longer then acidic soil condition.
In this case osteocytes(bone cells) are the first to decompose followed by the cartilage and bone marrow, leaving behind mineral traces that scientist can study after thousand years.
