Cell wall is only absent in the following group of bacteria:
Correct answer: D. Mycoplasmas
- A. Staphylococci
- B. Pseudomonas
- C. Diplococcus pneumoniae
- D. Mycoplasmas
Explanation
The correct option is D: Mycoplasmas. These bacteria are distinctive in lacking a cell wall, which makes them naturally resistant to antibiotics such as penicillin that target cell wall synthesis. Mycoplasmas rely on a specialized cell membrane containing sterols for stability and are often pathogenic in animals. In contrast, Staphylococci, Pseudomonas, and Diplococcus pneumoniae all possess cell walls made largely of peptidoglycan, which is essential for their structural integrity and vulnerability to certain antibiotics.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Kingdom Prokaryotae
Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Kingdom Prokaryotae questions
In a bacterial cell, plasma membrane with all things present within it is called:
Vibrio cholera is an example of _ type of bacteria.
Which of the following organelles are present in all the bacteria?
Which of the following will not survive in the presence of oxygen?
Which of the following is true regarding the bacteria?
Which of the following is the most responsible factor for bacterial cell motility?