Elevated levels of Co₂ in bioreactor cause

• A) All of above
• B) Increased branching
• C) swollen roots
• D) intracellular pH changes

---------- And ----------- converts lactose in milk into lactic acid causing the milk to coagulate, during fermentation and form yogurt in the process.

• A) Lactobacillus bulgaricus, Streptococcus thermophilus
• B) Lactobacillus acidophilus, Streptococcus thermophilus
• C) Lactobacillus bulgaricus, Streptococcus Pediococcus
• D) Lactobacillus helveticus, Streptococcus thermophilus

Which item cannot put in a compost bin?

• A) Cooking oil
• B) Tea bags
• C) Shredded Paper
• D) Cardboard

The microbe present in nasal cavity on second number (in 41% cases)

• A) Streptococcus pneumoniae
• B) Staphylococcus aureus
• C) Diphtheroids
• D) Staphylococcus epidermidis

Which Microorganisms are used in the production of fermented food and beverages.

• A) All of above
• B) Yeast
• C) Lactobacillus
• D) Penicillium

The types of symbiotic relationship is

• A) All of these
• B) Commensalism
• C) Parasitism
• D) Mutualism

Trehalose-6-phosphate phosphatase (OtsB) then converts trehalose-6-phosphate to ----------

• A) Pyruvate
• B) Citrate
• C) Trehalose
• D) Succinate

------------ is the largest human organ which is the point of contact with the world and contain most diverse populations of microbes present in human.

• A) Stomach
• B) Brain
• C) Skin
• D) Heart

Recent research findings have revealed that ----------- can be used in treating bladder cancer, as the BCG strain in microorganism kills the tumor.

• A) Mycobacterium leprae
• B) Mycobacterium tuberculosis
• C) Mycobacterium bovis
• D) Mycobacterium avium

Estrogens and progesterone are example of

• A) Carbohydrates
• B) Steroid
• C) Protein
• D) Vitamins

The archaebacteria are found mainly in the ------------ near -----------environment.

• A) Sewage water, hydrothermal vent
• B) none
• C) Deep ocean, hydrothermal vent
• D) Cold rivers, hydrothermal vent

The first therapeutic antibodies, especially monoclonal antibodies, have been on the market since the late --------------

• A) 1990s
• B) 1970s
• C) 1980s
• D) 1910s

Transgenic plants are most commonly generated by exploiting a plasmid vector carried by ----------- a bacterium.

• A) Bacillus
• B) Agrobacterium tumefaciens
• C) Rhizobium
• D) None of above

The pH range of Neutrophiles are ---------------

• A) 3.4-7.6
• B) 7.7-7.8
• C) none
• D) 6.5-7.5

A classical strategy for proteomic study is the use of a system.

• A) gel electrophoresis
• B) Isoelectric point
• C) SDS gel
• D) yeast two-hybrid

Success of dominant selection for strain designing requires considerable insight into microbial ------------------

• A) Pathology
• B) Anatomy
• C) Physiology
• D) none

The first study to measure biomagnification was carried out in Clear Lake in northern -------------

• A) California
• B) Japan
• C) USA
• D) UK

Nisin, an ----------- produced by strains of Lactococcus lactis, is widely used as a preservative at low concentrations (up to 250 ppm in the finished product) primarily in heat-processed and low pH foods.

• A) antimicrobial peptide
• B) antiregulatory peptide
• C) antigenic peptide
• D) None

The most common examples of microorganisms that are used as Bio fertilizers and Biopesticides.

• A) Rhizobium
• B) Bacillus
• C) All of above
• D) Azotobacter

A general method of differentiating bacterial species into two large groups is called as-------

• A) Gram staining
• B) Ziehl-Neelsen staining
• C) Giemsa staining
• D) Differential staining