Bacteria
Biology ⇒ Microorganisms and Microbiology
Bacteria starts at 7 and continues till grade 12.
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See sample questions for grade 10
A patient is diagnosed with a bacterial infection. The doctor prescribes antibiotics. Explain why antibiotics are effective in this case but not for viral infections.
A student observes a bacterial colony growing on a nutrient agar plate. The colony is round, smooth, and white. What can the student conclude about the bacteria?
Describe one way in which bacteria are important in the food industry.
Describe the role of bacteria in decomposition.
Explain the difference between Gram-positive and Gram-negative bacteria.
Explain why bacteria are considered prokaryotic organisms.
A patient is diagnosed with a bacterial infection. The doctor prescribes antibiotics. Explain why antibiotics are effective in this case but not for viral infections.
A student observes a bacterial colony growing on a nutrient agar plate. The colony is round, smooth, and white. What can the student conclude about the bacteria?
Bacteria reproduce mainly by which process?
(1) Binary fission
(2) Budding
(3) Fragmentation
(4) Spore formation
Which of the following is a beneficial use of bacteria?
(1) Causing food spoilage
(2) Nitrogen fixation
(3) Causing disease
(4) Rusting iron
Which of the following is a method by which bacteria can become resistant to antibiotics?
(1) Mutation
(2) Binary fission
(3) Conjugation
(4) Both (1) and (3)
Which of the following is a rod-shaped bacterium?
(1) Coccus
(2) Bacillus
(3) Spirillum
(4) Vibrio
Fill in the blank: Bacteria that can live without oxygen are called ________ bacteria.
Fill in the blank: Bacteria that require oxygen for survival are called ________ bacteria.
Fill in the blank: The process by which bacteria exchange genetic material through direct contact is called ________.
Fill in the blank: The process of using bacteria to clean up environmental pollutants is called ________.
Bacteria are always harmful to humans. True or False?
Bacteria are classified as prokaryotes. True or False?
Bacteria can form spores to survive harsh conditions. Yes or No?
Bacteria can survive in extreme environments such as hot springs and salt lakes. True or False?
