Indicate whether each of the following descriptions better applies to a Wee1 protein (W) or a Cdc25 protein (C). Your answer would be a four-letter string composed of letters W and C only, e.g. WWCW.
( ) It is a protein kinase.
( ) It activates M-Cdk complexes.
( ) It is activated by M-Cdk complexes.
( ) Its loss in fission yeast results in small cell size.