Question

While examining a rock surface, you have discovered an interesting new organism. Which of the following criteria will allow you to classify the organism as belonging to Bacteria but not Archaca or Eukarya?
A) Cell walls are made primarily of peptidoglycan.
B) The organism does not have nacleus.
C) The lipids in its plasma membrane consist of glycerol bonded to straight-chain faty acids.
D) It can survive at a temperature over 100ยฐC

Answer 1

Answer:

All of the characters are present in a bacteria.

Explanation:

i)Bacterial cell wall is composed of petidoglycans which is made up of sugar and amino acid molecules that helps in protecting the bacteria from different antibiotics like penicillin etc.

ii)Bacteria lack many cell organelles that are found in eukaryotic organisms like nucleus,mitochondria, golgi body, ER,chloroplast etc.

iii)Bacterial plasma membrane mainly formed by amphiphilic lipids which contain glycerol, phospholipids, that are composed of two fatty acids and a  phosphate group with variable head.

iv)Bacteria require proper environment like food,moisture,temperature for their growth and development.The ideal temperature is 40-122°C