Question
The Diversity of Life
Examine the images of organisms and their descriptions in the table. Then, answer the lab review questions.
Organism
8
peptidoglycan in the cell wall
gram-negative
colony of cells that contain chloroplasts, organelles, and a nucleus
reproduces
asexually by binary fission has a binary
nucleus
some species are pathogenic, while others are part of the human skin, respiratory tract, etc.
Properties
heterotrophic
species
found in the human gut
covered in hair- like cilia that it
uses to move
eats algae, yeast, and bacteria
Lab Review
1. Classify these organisms according to their domains.
2. Compared to other domains, scientists know relatively little about bacteria, even though they are so numerous. How has the study of bacteria been limited by technology in the past? What are some promising new ways to study bacteria, and what can scientists learn from these methods?
3. Describe a few ways in which endosymbiotic theory has changed the way scientists think about the ancestral distinctions among the three domains.
Examine the images of organisms and their descriptions in the table. Then, answer the lab review questions.
Organism
8
peptidoglycan in the cell wall
gram-negative
colony of cells that contain chloroplasts, organelles, and a nucleus
reproduces
asexually by binary fission has a binary
nucleus
some species are pathogenic, while others are part of the human skin, respiratory tract, etc.
Properties
heterotrophic
species
found in the human gut
covered in hair- like cilia that it
uses to move
eats algae, yeast, and bacteria
Lab Review
1. Classify these organisms according to their domains.
2. Compared to other domains, scientists know relatively little about bacteria, even though they are so numerous. How has the study of bacteria been limited by technology in the past? What are some promising new ways to study bacteria, and what can scientists learn from these methods?
3. Describe a few ways in which endosymbiotic theory has changed the way scientists think about the ancestral distinctions among the three domains.
Answers
GPT 3.5
Lab Review Questions:
1. Organism 1 belongs to Domain Bacteria, while Organisms 2 and 3 belong to Domain Eukarya.
2. In the past, technology limitations such as the inability to culture certain bacteria in laboratory settings made it difficult for scientists to study them. However, advances in technology such as DNA sequencing, metagenomics, and bioinformatics have allowed scientists to study bacteria more effectively. These methods can help scientists understand bacterial diversity, evolution, and their roles in various ecosystems.
3. Endosymbiotic theory suggests that some organelles, such as chloroplasts and mitochondria, were originally free-living prokaryotes that were engulfed by larger host cells. This theory challenges the traditional view of a clear-cut divide between the three domains of life (Bacteria, Archaea, and Eukarya) and suggests a more interconnected evolutionary history. It also highlights the importance of symbiotic relationships in shaping the diversity of life on Earth.
1. Organism 1 belongs to Domain Bacteria, while Organisms 2 and 3 belong to Domain Eukarya.
2. In the past, technology limitations such as the inability to culture certain bacteria in laboratory settings made it difficult for scientists to study them. However, advances in technology such as DNA sequencing, metagenomics, and bioinformatics have allowed scientists to study bacteria more effectively. These methods can help scientists understand bacterial diversity, evolution, and their roles in various ecosystems.
3. Endosymbiotic theory suggests that some organelles, such as chloroplasts and mitochondria, were originally free-living prokaryotes that were engulfed by larger host cells. This theory challenges the traditional view of a clear-cut divide between the three domains of life (Bacteria, Archaea, and Eukarya) and suggests a more interconnected evolutionary history. It also highlights the importance of symbiotic relationships in shaping the diversity of life on Earth.