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found in the chromosomes of most bacteria.
composed of long polysaccharides crosslinked with short polypeptides.
composed of long polypeptides held together by disulfide bridges.
a unique combination of protein lipid and fat.
Bacteria can obtain their nutrition by
all of the above
Which of the following makes archaebacteria different from other monerans?
absence of peptidoglycan
existence of organelles
The methane-producing bacteria belong to
Listed below are descriptions of bacterial shape. Select the exception.
Which of the following allow the bacteria to join together to transfer genes?
Which of the following statements about prokaryotes is correct?
Bacterial cells conjugate to mutually exchange genetic material
Their genetic material is confined within a nuclear envelope
They divide by binary fission, without mitosis or meiosis
The persistence of bacteria throughout evolutionary time is due to genetic similarity
What is the function of a bacterium's capsule?
Which of the following statements is not true?
Archaea and bacteria have different membrane lipids.
Both archaea and bacteria generally lack membrane-enclosed organelles
The cell walls of archaea lack peptidoglycan
Only bacteria have histones associated with DNA.
Plant-like photosynthesis that releases O2 occurs in