Which of the following bacteria causes stomach ulcer*4 pointsTreponema pallidumSalmonellaHelicobacter pyloriClostridium botulinum

The bacteria that causes stomach ulcers is Helicobacter pylori.

Explanation:

Helicobacter pylori is a type of bacteria that can infect the stomach lining. It is known to be a major factor in the development of peptic ulcers, which can lead to conditions such as gastritis and even stomach cancer if left untreated. The other options listed:

• Treponema pallidum is responsible for syphilis, a sexually transmitted infection.
• Salmonella is associated with food poisoning and gastrointestinal infections.
• Clostridium botulinum causes botulism, a severe form of food poisoning.

Overall, Helicobacter pylori is the correct answer to the question regarding which bacteria causes stomach ulcers.