The protein myosin has how many subunits?

A catalytic triad is a set of three coordinated amino acids that can be found in the active site of some enzymes. What of the following is true about the catalytic triad? A) It consist of a nucleophile, a general base and an acid  B) It’s a set of three coordinated amino acids outside the active site of some enzymes C) In chymotrypsin, the catalytic triad is made from serine 195, histidine 57, and aspartate 102 D) Most commonly found in hydrolase and transferase enzymes E) Consist of 3 positively charged amino acids

Which of the following describes the relationship between the ring structures α-D-ribofuranose and β-D-ribofuranose, given that they rotate the plane of polarized light differently due to they differ in the position of a specific hydroxyl group?

Examine the Fischer projection below. How is this carbohydrate classified? 

Solve the equation and check. 4x = 2x –  

Subtract the polynomials.   + +     + – –                                                      

Solve the equation and check.x + = x –  

Add.   ( y x + z )+ ( z y + x ) + ( y + z x )  

Solve the equation and check. – 4x + = 6x –  

Solve the equation and check. 3x – 10 = 5x – 20