Which of the following protozoa contains chlorophyll?
Amoeba
Euglena
Paramecium
Trypanosoma
Two bacteria found to be very useful in genetic engineering experiments are:
Escherichia and Agrobacterium
Nitrobacter and Azotobacter
Rhizobium and Diplococcus
Nitrosomonas and Klebsiella
The chemical compounds produced by the host plants to protect themselves from fungal infection are known as:
Phytotoxin
Pathogen
Phytoalexins
Botulinum
Viruses that infect bacteria multiply and cause their lysis are called:
Lysozyme
Lytic
Lipolytic
Lysogenic
Which of the following are known as sac-fungi?
Phycomycetes
Ascomycetes
Basidiomycetes
Deuteromycetes
Which of the following environmental conditions is essential for optimum growth of Mucor on a piece of bread?
Temperature of about 250C
Temperature of about 50C
Relative humidity of about 5%
A shady place
Interferons are synthesized in response to:
Mycoplasma
Bacteria
Virus
Fungi
Which bacteria is utilized in biogas plants?
Methanogens
Nitrifying bacteria
Ammonifying bacteria
Denitrifying bacteria
Which of the following organisms possesses characteristics of both a plant and an animal?
Transfer of genetic information from one bacterium to another in the transduction process is through:
Conjugation
Bacteriophage released from the donor bacterial strain
Another bacterium
Physical contact between donor and recipient strain
