Along with mice, one type of these organisms was used by Oswald Avery and Colin MacLeod to suggest that DNA was the main vehicle of heredity. They can exchange genetic material through a pilus in a process called conjugation, and can also incorporate exogenous DNA through transformation. Roots of legumes often have (*) nitrogen-fixing types of these organisms. Ones with peptidoglycan in their cell wall appear violet after Gram staining, and their cyano- type was misidentified as blue-green algae. They do not have a nucleus, and contain circular chromosomes called plasmids. For ten points, name
Along with mice, one type of these organisms was used by Oswald Avery and Colin MacLeod to suggest that DNA was the main vehicle of heredity. They can exchange genetic material through a pilus in a process called conjugation, and can also incorporate exogenous DNA through transformation. Roots of legumes often have (*) nitrogen-fixing types of these organisms. Ones with peptidoglycan in their cell wall appear violet after Gram staining, and their cyano- type was misidentified as blue-green algae. They do not have a nucleus, and contain circular chromosomes called plasmids. For ten points, name these prokaryotic micro-organisms, such as E. coli, which can also cause diseases like cholera.
Along with mice, one type of these organisms was used by Oswald Avery and Colin MacLeod to suggest that DNA was the main vehicle of heredity.
{bacteria} or {bacterium} (prompt on {streptococcus} before “nitrogen”)