What is unusual about the role of miRNA in expression of the tumor necrosis factor-? (TNF-?) gene?
What will be an ideal response?
Ans: miRNA actually activates translation of the mRNA for this gene, when miRNA normally represses gene expression. Under conditions of serum starvation, a different set of proteins is recruited to the mRNA, so that RISC and its associated miRNA function to facilitate translation.
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Some crenarchaeotes have growth optima above the boiling point of water (at atmospheric pressure)
Indicate whether the statement is true or false.
Which of the following uses a mosquito as a vector?
A) Anopholes B) Parelaphostrongylus C) Plasmodium D) Borrelia
Parthengogensis is when what happens?
What will be an ideal response?
Myosin II is found in skeletal muscle and the contractile ring. It is a two-headed myosin with tails that can form thick filaments. Other myosins such as myosin I or myosin V do not form thick filaments and yet are still capable of producing movement along actin filaments. To what do the tail(s) of myosin I or myosin V bind?
a. Cargo such as membrane vesicles or intermediate filaments b. Centrosomes c. Chromosomes d. Tubulin