What are the functions of the 5' cap and poly(A ) tail of mature mRNAs in eukaryotes?
What will be an ideal response?
Both protect the mRNA from degradation by exonucleases. The 5' cap is also important for the binding of the ribosome at the beginning of translation. The poly(A ) tail is required for efficient export of the mRNA from the nucleus to the cytoplasm.
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What other information is related to the question? Which information is most useful?
What will be an ideal response?
The class of neurotransmitters that most commonly acts as a modulator of postsynaptic cell response are the
A. gases such as nitric oxide. B. acetylcholine. C. neuropeptides. D. amino acids. E. biogenic amines.
Any individual organism has the potential to evolve if it's given enough time and possesses a mechanism to generate variation
Indicate whether the statement is true or false
The first three children of a couple, both heterozygous for cystic fibrosis, were healthy; what is the probability that a fourth child will have the disease?
A) 100% B) 75% C) 50% D) 25% E) it is impossible to predict