Bacteria
Biology ⇒ Microorganisms and Microbiology
Bacteria starts at 7 and continues till grade 12.
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Context: A patient is diagnosed with a bacterial infection. The laboratory report states the bacteria are Gram-negative rods. What does this indicate about the bacteria's cell wall structure?
Context: A scientist is studying bacteria that can survive without oxygen and are killed when exposed to it. What type of bacteria are these?
Describe the importance of bacteria in the human gut microbiome.
Describe the process of Gram staining and its significance.
Describe the role of bacteria in the nitrogen cycle.
Explain how antibiotics affect bacterial cells but not human cells.
Context: A patient is diagnosed with a bacterial infection. The laboratory report states the bacteria are Gram-negative rods. What does this indicate about the bacteria's cell wall structure?
Context: A scientist is studying bacteria that can survive without oxygen and are killed when exposed to it. What type of bacteria are these?
Which component is present in the cell wall of most bacteria but absent in Archaea?
(1) Peptidoglycan
(2) Cellulose
(3) Chitin
(4) Lignin
Which of the following is a characteristic of prokaryotic cells?
(1) Presence of membrane-bound organelles
(2) Absence of a true nucleus
(3) DNA enclosed in a nuclear envelope
(4) Presence of mitochondria
Which of the following is a common method used to sterilize laboratory equipment to prevent bacterial contamination?
(1) Freezing
(2) Autoclaving
(3) Drying
(4) Refrigeration
Which of the following is a method of horizontal gene transfer in bacteria?
(1) Binary fission
(2) Conjugation
(3) Mitosis
(4) Budding
Bacteria reproduce primarily by the process of __________.
Fill in the blank: Bacteria that can survive in extreme environments, such as hot springs or salt lakes, are called __________.
Fill in the blank: Bacteria that obtain energy from inorganic compounds are called __________.
Fill in the blank: The enzyme __________ is produced by some bacteria to break down hydrogen peroxide into water and oxygen.
True or False: All bacteria are harmful to humans.
True or False: All bacteria require oxygen for survival.
True or False: Bacteria are prokaryotic organisms.
True or False: Bacteria can be autotrophic or heterotrophic.
