113lecture0606

113lecture0606 - BIOLOGY 113 MICROBIOLOGY Lecture 6 Microbial Metabolism Activities and regulation of enzymes The term metabolism refers to the sum

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BIOLOGY 113 - MICROBIOLOGY Lecture 6: Microbial Metabolism - Activities and regulation of enzymes The term metabolism refers to the sum of all chemical reactions within a living organism. Metabolic activity can be dividied into two classes of reactions: - Catabolic reactions release energy and are employed for breaking down nutrients = Many catabolic reactions are hydrolysis reactions = An example of catabolism is hydrolysis of proteins to individual amino acids - Anabolic reactions require energy and are used in synthesizing molecules needed by the cells = Many anabolic reactions are dehydration synthesis reactions = An example of anabolism is synthesis of proteins from amino acids - Adenosine triphosphate (ATP) serves as a link between catabolism and anabolism (Tortora et al., Figure 5.1) = Catabolic reactions may be linked to dehydration synthesis of ATP from ADP and free phosphate; the energy released in the catabolic reaction is "stored" in the ADP-P covalent bond = The energy for anabolic reactions may be obtained by hydrolysis of ATP to ADP + phosphate. The metabolic reactions of living systems are catalyzed by enzymes - By a catalyst, we we mean something that increases the frequency of productive collisions in a
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/24/2011 for the course BIO 113 taught by Professor Staff during the Fall '09 term at Rutgers.

Page1 / 2

113lecture0606 - BIOLOGY 113 MICROBIOLOGY Lecture 6 Microbial Metabolism Activities and regulation of enzymes The term metabolism refers to the sum

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online