{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

2012_Unit_2-4_Regulation

2012_Unit_2-4_Regulation - Unit 2 Information flow The...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BIO 1140 – SLIDE #1 Unit 2 – Information flow Unit 2 – What explains the variety of systems and their regulation? DNA RNA Protein The Central Dogma Replication Transcription Translation Reading Chapter 13.3,13.4 Chapter 14 Chapter 15 Objectives DNA Replication in eucaryotes What is a gene? Transcription in eucaryotes Translation in eucaryotes Regulation BIO 1140 – SLIDE #2 BIO1140 CELL BIOLOGY Examples of netiquette rules concerning peer respect (from Centre for University Teaching) • Be sure your device sound is set to “off” at the beginning of class • Stay on task. Activities such as Web surfing or gaming may distract classmates. • Listen to your classmates if they complain to you that your use is distracting BIO 1140 – SLIDE #3 Unit 2 – Information flow Gene Regulation WHY IS UNDERSTANDING REGULATION THE KEY TO UNDERSTANDING SO MUCH OF LIFE? Changes in environment or changes in nutrients Changes in make up of cell is response to signals In a multicellular organism, cellular differentiation Conserve energy Gene regulation refers to the regulation of activity and may occur at any level. While the main control is at the level of transcription additional controls are at the posttranscriptional, translational and posttranslational levels. At the level of transcription, trans-acting factors Interacting with cis-acting sequences. - tells us how everything is integrated - all of these involve cis acting sequences and trans - if you don't produce the right proteins, or if you don't produce enough... etc in trouble - which is why regulation is important - must be able to respond to changes in enviro or nutrients and respond adequately
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon