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.
How to Send a Text from Your Phone. Cell phones and smartphones will differ in the menu options and buttons, but in general, the process of sending a text message to someone else's phone is pretty straightforward. From your phone's main menu find the Messages or Messaging option or application. Check your cell phone plan to see how much text messaging or texting costs. 2  If you don't have a plan that includes texting, each message you send or receive will cost a small amount (around $0.20 per message, but more if you send a text message while roaming internationally or if you send an international text message).