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.
Some Starting Estimates. 1  Talks on the phone for 500 minutes a month. I totally just made this number up. Just picking 8 kbps data rate (I know it is actually more complicated than that), this would be 0.0285 GB. 2  500 plain text messages a month. Let me pretend that that the average text message is 40 characters long.