San Antonio College Library

In this video lesson, Paul Andersen explains how genes are regulated in both prokaryotes and eukaryotes. He begins with a description of lac and trp operons and how they are used by bacteria in both positive and negative response. He also explains the importance of transcription factors in eukaryotic gene expression.--Publisher.

"Integrating approaches from political science, the study of business, and economics into a unified whole, Government, Business, and the American Economy, second edition, explores the many ways in which governments and the business world are interconnected."--Jacket.

Eating disorders increased in teens and young adults during the pandemic and researchers say binge eating is still a problem for teens.

"Sensations of hunger, thirst, sexual attraction, and love can dominate our thoughts to the exclusion of almost everything else, but up until the past ten years or so, the precise reasons why these passions arise have not been well understood. We now know that these, and other drives like the urge to sleep, are controlled by a small portion of the brain called the hypothalamus. This book presents the latest information about how the brain controls...

Almost 30 million Americans will have an eating disorder in their lifetime. During the pandemic, the number of people seeking treatment has jumped. But as Amna Nawaz reports in this NewsHour production, eating disorders are often overlooked in people of color.

"We take an average of 7.5 million breaths a year and some 600 million in our lifetime, and what goes on in our body each time oxygen is taken in and carbon dioxide expelled is nothing short of miraculous. 'Our lungs are the lynchpin between our bodies and the outside world,' writes Dr. Michael J. Stephen. And yet, we take our lungs for granted until we're incapacitated and suddenly confronted with their vital importance. In Breath Taking, pulmonologist...