MICROBIOLOGY: AN INTRODUCTION
CHAPTER 29 COMPREHENSIVE SOLVED
QUESTIONS AND COMPLETE ANSWERS
◉ Protozoa (sing: protozoan).
Answer: Eukaryotes, Absorb or ingest organic chemicals. May be
motile via pseudopods, cilia, or flagella. Protozoa have no cell wall.
Have a thickening of their cell membrane, but have no cell wall
◉ Algae (sing: alga).
Answer: Eukaryotes, Cellulose cell walls. Use photosynthesis for
energy. Produce molecular oxygen and organic compounds
◉ Viruses.
Answer: Acellular, Consists of DNA or RNA core, Core is surrounded
by a protein coat, Coat may be enclosed in a lipid envelope, Are
replicated only when they are in a living host cell
◉ Helminths.
Answer: Parasitic flatworms and roundworms
◉ Cell Theory.
, Answer: Theory that all living things are composed of cells
◉ Spontaneous generation.
Answer: Hypothesis stating that life could arise from nonliving
matter.
◉ Biogenesis.
Answer: the production of living organisms from other living
organisms
◉ Aseptic techniques.
Answer: Techniques that prevent contamination by unwanted
microorganisms, which are now standard practice in laboratory and
medical procedures
◉ Fermentation.
Answer: Conversion of sugar to alcohol to make wine and beer.
Microorganisms called yeasts convert sugars to alcohol in the
absence of air.
◉ Pasteurization.
Answer: Solution credited to Pasteur for spoilage. A process of
heating food to a temperature that is high enough to kill most
harmful bacteria without changing the taste of the food.
CHAPTER 29 COMPREHENSIVE SOLVED
QUESTIONS AND COMPLETE ANSWERS
◉ Protozoa (sing: protozoan).
Answer: Eukaryotes, Absorb or ingest organic chemicals. May be
motile via pseudopods, cilia, or flagella. Protozoa have no cell wall.
Have a thickening of their cell membrane, but have no cell wall
◉ Algae (sing: alga).
Answer: Eukaryotes, Cellulose cell walls. Use photosynthesis for
energy. Produce molecular oxygen and organic compounds
◉ Viruses.
Answer: Acellular, Consists of DNA or RNA core, Core is surrounded
by a protein coat, Coat may be enclosed in a lipid envelope, Are
replicated only when they are in a living host cell
◉ Helminths.
Answer: Parasitic flatworms and roundworms
◉ Cell Theory.
, Answer: Theory that all living things are composed of cells
◉ Spontaneous generation.
Answer: Hypothesis stating that life could arise from nonliving
matter.
◉ Biogenesis.
Answer: the production of living organisms from other living
organisms
◉ Aseptic techniques.
Answer: Techniques that prevent contamination by unwanted
microorganisms, which are now standard practice in laboratory and
medical procedures
◉ Fermentation.
Answer: Conversion of sugar to alcohol to make wine and beer.
Microorganisms called yeasts convert sugars to alcohol in the
absence of air.
◉ Pasteurization.
Answer: Solution credited to Pasteur for spoilage. A process of
heating food to a temperature that is high enough to kill most
harmful bacteria without changing the taste of the food.
