Word: protein
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
Even today, Dr. Codellas points out, the pellets would "merit respect" on a "nutritional and utilitarian" basis. The honey gives carbohydrates, and, with the sesame oil, takes care of caloric values. Protein from the sesame supplies the nitrogen need of the body, the squill serves as a mild heart stimulant, and the opium deadens the stomach's hunger pains...
Professor Williams and his associate, Paul Charles Zamecnik, Harvard associate in medicine, have a serious purpose. They are trying to study the structure of protein, the basic substance of living creatures. Fibroin, the principal constituent of silk, is a protein. Scientists know that it is made of certain amino acid molecules linked together in chains. What they do not know is how the chains are put together. The plan is to find out how the silkworms do it. Professor Williams is injecting mature worms with various amino acids which are made radioactive by carbon 14. After a while the worms...
Muscles, he says, are chemical engines that get their energy from a compound called adenosine triphosphate (ATP). Their active portions are submicroscopic fibers made of a peculiar protein called actomyosin. When the protein is linked with ATP (to supply energy), it is like a coiled spring or a loaded gun. An electrical impulse from the nervous system can "fire the gun," making the fibers contract powerfully...
Cell City. Long-range figuring-out is the duty of such men as Dr. George B. Brown, head of the Protein Chemistry Division. Dr. Brown and his assistants are studying the chemistry of both normal and cancer cells, looking for differences that they may exploit...
...larva has a closed alimentary canal. All the waste matter from its heavy protein diet is stored in an internal sac until the baby mud dauber has finished its food store. Then the larva develops an anus and excretes the entire sac into a back compartment of its bedchamber. It seals off the narrow connecting passage with a blob of quick-hardening cement, secreted especially for the purpose, so that it can spend the winter hygienically in the clean, dry front chamber...