Pilli are hollow, non-helical, filamentous appendages in bacteria. Which one is not true for Pili:
Correct answer: D. These are present in gram positive bacteria
- A. They are involved in mating process
- B. They are the means of attachments of bacteria to various surfaces
- C. They are made up of protein
- D. These are present in gram positive bacteria
Explanation
These are hollow, nonhelical, filamentous appendages. Pili are smaller than flagella and are not involved in motility. True pili are only present in gram-negative bacteria. They are made up of a special protein called pilin. They are primarily involved in a mating process between cells called the conjugation process. Some pili function as a means of attachment of bacteria to various surfaces.
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
These all are the function of flagella in a bacterium but which is the primary one:
Bacteria without any flagella is called:
In prokaryotes, the genetic material is without:
The cytoplasmic matrix is the substance present between the plasma membrane and the nucleoid. The plasma membrane and everything present within it is termed as:
As we know certain species of bacteria produce spores, these all are the characterstics of a spore except:
If we say that bacteria become dormant, thick-walled, and desiccation resistant during differentiation of vegetative cells which can germinate under suitable conditions. Which structure we are talking about?