See if you can find the 8 differences in each set of images.
Molecular motors, a portrait
The image illustrates our model regarding HMM (heavy meromyosin) adsorption on surfaces. Proteins adsorb in a functional “heads up” configuration on hydrophobic surfaces but both in heads up and down (not so functional) configurations on hydrophilic surfaces.
Nuria Albet Torres, Linnaeus University, Sweden

Micro underwater thorny flower
Scanning electron micrograph of the spicules of the Herdmania momus sea sponge. These spicules are made of vaterite, a very rare and metastable polymorph of CaCO3.
Boaz Pokroy, Harvard University

Answers will be in April 2011 issue or on www.mrs.org/LookAgain_Feb11
December 2010 answer key www.mrs.org/LookAgain_Dec10
