1) The document provides an overview of Chapter 27 from Campbell Biology which discusses bacteria and archaea. It covers their structural adaptations, diversity, metabolism, and systematics.
2) Key points include that prokaryotes have diverse shapes and sizes and structural adaptations like cell walls, flagella, and pili. They reproduce rapidly through binary fission.
3) Prokaryotes are highly diverse due to their rapid reproduction and mutation rates, as well as gene transfer through transformation, transduction, and conjugation. They have varied metabolic capabilities and nutrition.
36. Figure 27.10
EXPERIMENT
Daily serial transfer
0.1 mL
(population sample)
Old tube
(discarded
after
transfer)
New tube
(9.9 mL
growth
medium)
Population growth rate
(relative to ancestral population)
RESULTS
1.8
1.6
1.4
1.2
1.0
0
5,000
10,000
15,000
Generation
20,000
50. Figure 27.13
Bacterial chromosome
F plasmid
F+ cell
(donor)
F+ cell
Mating
bridge
F− cell
(recipient)
F+ cell
Bacterial
chromosome
(a) Conjugation and transfer of an F plasmid
Hfr cell
(donor)
A+
A−
A+
F factor
F− cell
(recipient)
A+
A+
A−
A−
(b) Conjugation and transfer of part of an Hfr bacterial chromosome
A+
A−
A+
Recombinant
F− bacterium
57. Figure 27.13b-3
Hfr cell
(donor)
A+
A−
A+
F factor
F− cell
(recipient)
A+
A+
A−
A−
A+
A−
(b) Conjugation and transfer of part of an Hfr bacterial chromosome
A+
Recombinant
F− bacterium