What is the function of polycomb group proteins?
What will be an ideal response?
Ans: Polycomb group proteins (Pc-G) in Drosophila, although they do not actually repress the expression of genes, act to continue their repression. They recognize and bind to repressor proteins, which may then dissociate from DNA while the Pc-G proteins remain to maintain repression.
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Some protists bear a small number of external cellular structures that facilitate swimming by repeatedly bending and straightening. These protists are informally known as:
A. amoebae B. ciliates C. algae D. periphyton E. flagellates
The region where freshwater from a river and saltwater mix is a(n):
a. limnetic zone b. estuary c. intertidal zone d. upper littoral zone e. profundal zone
Bile helps in the digestion of _____
a. carbohydrates b. fats c. carbohydrates d. proteins e. nucleic acids
Collections of lymphoid tissues, called MALT, are strategically placed throughout the respiratory, digestive, and genitourinary systems. Which one of these is located at the end of the small intestine?
What will be an ideal response?