Quiz_Monera

Explanation:Some bacteria, such as cyanobacteria, can manufacture their own food through photosynthesis despite lacking plastids. They contain pigments like chlorophyll that capture light energy for this process.

Explanation:Mycoplasma differ from typical bacteria primarily due to the absence of a cell wall. This characteristic makes them resistant to antibiotics like penicillin that target cell wall synthesis.

Explanation:Botulism is a severe form of food poisoning caused by Clostridium botulinum. The bacteria produce a potent neurotoxin that can lead to paralysis and even death if not treated promptly.

Explanation:Boiling surgical instruments is a method of sterilization that kills bacteria, viruses, and other pathogens. This process ensures that the instruments are free from contaminants that could cause infections during medical procedures.

Explanation:Methanogens are a type of archaebacteria found in anaerobic environments such as marshes and the digestive tracts of ruminant animals. They produce methane as a metabolic byproduct.

Explanation:Decay is the aerobic decomposition of organic matter, which occurs in the presence of oxygen. This process breaks down organic materials without producing foul odors, unlike anaerobic decomposition.

Explanation:Bacteria primarily reproduce asexually through binary fission, a process where a single bacterial cell divides into two identical daughter cells. Conjugation and transduction are methods of genetic exchange but not primary modes of reproduction.

Explanation:Pneumonia is commonly caused by bacterial infections, particularly by Streptococcus pneumoniae. While viruses and fungi can also cause pneumonia, bacterial infections are the most frequent cause.

Explanation:Little leaf disease of Brinjal (eggplant) is caused by Mycoplasma, a type of bacteria without a cell wall. This disease affects the growth and development of the plant, leading to stunted growth and small leaves.

Explanation:Nitrosomonas bacteria play a crucial role in the nitrogen cycle by converting ammonia (NH3) to nitrite (NO2-). This process is the first step in nitrification, which is essential for soil fertility.