Auxotrophs Study guides, Class notes & Summaries

Insertion or deletion of nucleotides causes a 'frameshift' in how mRNA is transcribed. Occurs during DNA synthesis. Ethinium Bromide Used in DNA staining for electrophoresis; an intercalating agent which causes frameshift mutations in living cells. Indirect Selection Allows for the isolation of auxotrophs from wild-type parents (auxotrophs need an additional nutrient). Requires making a plate copy with velvet and looking for the colonies which do not grow on the nutrient-limited plate....

In 1944, the age of molecular genetics was born when... - ANSWER- Avery, McCarthy and McCloud showed that DNA was the material that determined the genetic difference between smooth and rough pneumococci. What is the hallmark of the science of molecular genetics? - ANSWER- The isolation and use of mutant microorganisms carrying stable, heritable variations from the normal or wild-type strain. What was the basic approach used to deduce biochemical synthetic pathways? - ANSWER- To isolate mut...

Molecular Genetics Exam I | Questions & 100% Correct Answers Molecular Genetics Exam I | Questions & 100% Correct Answers In 1944, the age of molecular genetics was born when... - ANSWER- Avery, McCarthy and McCloud showed that DNA was the material that determined the genetic difference between smooth and rough pneumococci. What is the hallmark of the science of molecular genetics? - ANSWER- The isolation and use of mutant microorganisms carrying stable, heritable variations from the norm...

PCB 3063-Test Bank for Chapter 9: Bacterial and Viral Genetic Systems Bacterial mutants that require supplemental nutrients in their growth media are called a. autotrophs. b. heterotrophs. c. prototrophs. d. omnitrophs. e. auxotrophs. Answer: e Section: 9.1 Comprehension Question 2. Which of the following statements about nutritional requirement and growth of bacteria is NOT true? a. Culture media developed for bacteria must contain carbon source and essential elements for the sur...

EXAMINATION TESTS OF MICROBIOLOGY VIROLOGY AND IMMUNOLOGY DISCIPLINE Basic bacteriology 1. Who first designed the microscope, saw and sketched microbes? A. Louis Pasteur B. Robert Koch C. Ilya Mechnikov D. Dmitri Ivanovsky E. Antonie Philips van Leeuwenhoek 2. Without which structures, bacteria cannot carry out their activities? A. Capsule B. Spors C. Volutine granules D. Nucleoid E. Flagella 3. What structure determines the shape of a bacterial cell? A. Cytoplasmic membrane B. Capsid C. Capsu...