Proteins are made from long chains of smaller molecules called amino acids. These long chains are folded into particular shapes. This is important in relation to how antibodies and enzymes work. Enzymes are biological catalysts. There are optimum temperatures and pH values at which their activity is greatest.
It costs just $0.25 to send a text message from the U.S. to an international number. For customers who frequently send text messages to family or friends overseas, AT&Tâs International Long Distance Messaging package includes 100 text messages sent from the U.S. for $10 a month.
BSNLâs New STV-41 and STV-18 allows subscribers to make outgoing ISD calls to Canada, U.S.A., Hong Kong, Singapore and Thailand at just Rs. 1.49 per minute and ISD SMS to these country will cost 2.50 per SMS. STVs priced at Rs.41 and Rs.18 and comes with a validity of 30 days and 7 days respectively.