Complete the second messenger relay

Exercise and reference answers

Missing parts

1. Answer

   phosphate

   Choices

   1. phosphate
   2. methyl
   3. acetyl

2. Answer

   phosphatase

   Choices

   1. kinase
   2. phosphatase
   3. polymerase

3. Answer

   cyclic AMP

   Choices

   1. cyclic AMP
   2. glycogen
   3. tryptophan

Complete the statement

A kinase adds a {0} group to a protein, and a {1} takes it off again. Small molecules such as calcium and {2} then spread the signal through the cytoplasm.

Instructions

Tap a word for each blank to complete how a signal is passed on inside the cell.

Explanation