MCB 3020 Exam Bundle

What is the transforming principle of inheritance - Answer-Hypothesized that material from dead streptococci can genetically transform living streptococci; Found that a biochemical component from the virulent S strain had transformed the R-Strain into a more virulent S Strain Fredrick Griffith - ...

Differentiate between the types of microorganisms studied by microbiologists -eukaryote - Answer-An organism characterized by having cells containing DNA in a membrane-bound Organelle Differentiate between the types of microorganisms studied by microbiologists -prokaryote - Answer-An organi...

Transcription of the lac operon is very high. - Answer-What is the phenotype of an E. Coli strain with a mutation in the lac operator that prevents the lac repressor from binding? Assume glucose is absent and lactose is present. Attenuation is a common regulatory strategy used to control the tran...

Define epidemiology - Answer-- The study of the origin, cause, distribution, and spread of disease Who was the first epidemiologist and what were his studies? - Answer-John Snow - studied series of Cholera outbreaks; discovered the disease came from infected drinking water T/F: Control measure...

Symbiosis - Answer--The stable association of one organisms with another -Occurs whether or not the association is beneficial for both partners Symbiont - Answer--Smaller organism in a symbiotic relationship Larger organism in a symbiotic relationship - Answer-Host Microbe-host relations...

Unlike most enveloped viruses involve the host ______ membrane in the formation of their envelope - Answer-Nuclear The most common type of molecule found on the surface of animal viruses for interacting with host cell receptors is a(n) - Answer-Glycoprotein Which of the following does not use ...

Milk Agar Plate Differential media Tests for the presence of the enzyme caseinase (Hydrolyzes casein (a milk protein) --> amino acid products) (+) = Clearing (-) = no clearing - Starch Agar Plate Differential media --> amylase Hydrolyses starch --> simple sugars that can be tran...

Immune System - Answer-consists of cells, proteins, and supporting systems that kill or neutralize invaders, react to allergens and chemicals and monitor the body for cancer Three roles of immune system - Answer-Fights pathogens, inactivates toxins and viruses, and monitors for cancer Allergie...

Components of the replisome are: - Answer-topoisomerase, single strand binding proteins, DNA polymerase III, helicase Anaerobic respiration - Answer-Uses electron carriers other than oxygen and yields less energy than aerobic respiration Post-transcriptional modifications such as adding a G ca...

What are the two types of microbial cells? - Answer-Prokaryotic and eukaryotic What is the 3 domains that are based on the comparison of rRNA? - Answer--Bacteria -Archaea -Eukarya B.A.E. Domain Bacteria - Answer-Has: -peptidoglycan -can have plasmids -Can perform Horizontal Gene tran...

Importance of Handwashing - Answer-- Essential to the science of microbiology •Rewind to 1846 / 174 (150) years ago / gold rush / potato famine era •Dr. Ignaz Semmelweis and cadaverous particles •But lets not forget his though process of childbed fever •Sex, Body Position, Noise, Smell ...

Which of these can be viewed by Light Microscopy? Hepatitis B virus Poxvirus Coccus-shaped bacteria Amino acid - Answer-coccus shaped bacteria On a P200, what volume (in μL) does a "0500" indicator read as? 50.0 0.50 0.050 500.0 - Answer-50.0 True or False: Tra...

organelles - Answer-delimited intracellular structures that perform specific cellular functions protists and fungi - Answer-2 most common groups of eukaryotic microbes cytosol - Answer-Fluid portion of cytoplasm microfilaments, intermediate filaments, and microtubules - Answer-3 kinds of fi...

Tools used in biotechnology and genetic engineering - Answer-In Silico analysis, DNA microarray analysis, gel electrophoresis, PCR, and RFLP analysis. PCR - Answer-*Polymerase Chain Reaction* technique for quickly and easily making many copies of even a very small amount of DNA Reverse Transc...

1. What is the role of microbes in maintain temperature on earth? (Role of microbes in CO2 and CH4 recycling) - Answer-they regulate Earth's temperature by balancing the levels of CO2 and CH4 and can convert and recycle them which maintains the temperature (interchanging carbon from one form to a...

What is Robert Hooke known for? - Answer-He is the first person to see a cell. Also Helped construct the first microscope. What is Antonie van Leeuwenhoek known for? - Answer-Made His own Microscope (Single-lens), Observations also published by the Royal Society. Malpighi and Odierna - Answer-...

organisms can classified by microbiologists into 2 parts: - Answer-cellular and acellular Cellular microorganisms include: - Answer-fungi, protists, bacteria, archaea Fungi contains? - Answer-Yeasts (unicellular) and mold (multicellular) Protists contain? - Answer-Algae (photosynthetic) Pr...

Which of the following can be examined with an ordinary bright-field microscope? Wet mounts Heat-fixed specimens Chemical-fixed specimens All of the choices are correct. - Answer-All of the choices are correct. The most common method used by clinical microbiology labs for identifying bacteria...

The ______ consists of cells, proteins, and supporting systems that kill or neutralize invaders, react to allergens and chemicals and monitor the body for cancer - Answer-immune system Three major, beneficial roles of the immune system are: - Answer--fights pathogens -inactivates toxins and viru...

study guide Q: by what mechanisms does horizontal gene transfer occur? - Answer-occurs via three mechanisms-conjugation, transformation, and transduction-evolved by bacteria to create recombinants what do these mechanisms depend on? - Answer-a recombination t/f: genes can only be transferred t...

What is the most common mechanism for bacterial cell division? - Answer-Binary Fission List the four steps of the mechanism above. - Answer-1. Elongation of the cell 2. Replication of the chromosome 3. Separation of the chromosomes into the two parts of the cell 4. Formation of septum in the m...

Biotechnology - Answer-use of organisms to form useful products Genetic engineering - Answer-The deliberate modification of an organisms genome sequence Recombinant DNA technology - Answer-procedures used to carry out genetic engineering Cloning - Answer-generation of a large number of gene...