Phosphatases are enzymes that
A) add phosphate groups.
B) are always inhibitory.
C) do not alter target activity.
D) remove phosphate groups.
E) all of the above
D) remove phosphate groups.
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stored calcium ions in the egg.
Indicate whether the statement is true or false.A nonsense mutation in a gene _____
A) changes an amino acid in the encoded protein B) has no effect on the amino acid sequence of the encoded protein C) introduces a premature stop codon into the mRNA D) alters the reading frame of the mRNA
Who played a decisive role in the refutation of theory of 'Spontaneous Generation'?
A. Ignatz Semmelweis B. Alexander Fleming C. Louis Pasteur D. Robert Koch E. Joseph Lister
__________ are characterized by two types of nuclei, a macronucleus and a micronucleus.
Fill in the blank(s) with the appropriate word(s).