Question
The Diversity of Life
Examine the images of organisms and their descriptions in the table. Then, answer the lab review questions.
Organism
1.colony of cells that contain chloroplasts, organelles, and a nucleus
2.covered in hair- like cilia that it uses to move reproduces asexually by binary fission has a binary nucleus eats algae, yeast, and bacteria
3.peptidoglycan in the cell wall some species are pathogenic, while others are part of the human skin, respiratory tract, etc.
4.gram-negative, heterotrophic species found in the human gut
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
1.colony of cells that contain chloroplasts, organelles, and a nucleus
2.covered in hair- like cilia that it uses to move reproduces asexually by binary fission has a binary nucleus eats algae, yeast, and bacteria
3.peptidoglycan in the cell wall some species are pathogenic, while others are part of the human skin, respiratory tract, etc.
4.gram-negative, heterotrophic species found in the human gut
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 the domain Eukarya, as it contains chloroplasts, organelles, and a nucleus. Organism 2 belongs to the domain Bacteria, as it reproduces by binary fission and has cilia. Organism 3 also belongs to the domain Bacteria, as it has peptidoglycan in the cell wall. Organism 4 belongs to the domain Bacteria as well, as it is gram-negative and found in the human gut.
2. The study of bacteria has been limited in the past by the lack of technology to properly observe and study them. With advancements in technology such as DNA sequencing, metagenomics, and bioinformatics, scientists are now able to study bacteria in more detail. These methods allow scientists to analyze the genetic makeup of bacteria, their interactions with other organisms, and the role they play in various ecosystems. By studying bacteria in these ways, scientists can learn more about their diversity, evolution, and ecological significance.
3. The endosymbiotic theory has changed the way scientists think about the ancestral distinctions among the three domains by suggesting that eukaryotic cells evolved from symbiotic relationships between prokaryotic cells. This theory proposes that mitochondria and chloroplasts were once free-living bacteria that were engulfed by a host cell and eventually became organelles. This suggests that eukaryotic cells are a combination of both bacterial and archaeal characteristics, blurring the lines between the three domains. Additionally, the endosymbiotic theory supports the idea that all life on Earth is interconnected and has a shared evolutionary history.
1. Organism 1 belongs to the domain Eukarya, as it contains chloroplasts, organelles, and a nucleus. Organism 2 belongs to the domain Bacteria, as it reproduces by binary fission and has cilia. Organism 3 also belongs to the domain Bacteria, as it has peptidoglycan in the cell wall. Organism 4 belongs to the domain Bacteria as well, as it is gram-negative and found in the human gut.
2. The study of bacteria has been limited in the past by the lack of technology to properly observe and study them. With advancements in technology such as DNA sequencing, metagenomics, and bioinformatics, scientists are now able to study bacteria in more detail. These methods allow scientists to analyze the genetic makeup of bacteria, their interactions with other organisms, and the role they play in various ecosystems. By studying bacteria in these ways, scientists can learn more about their diversity, evolution, and ecological significance.
3. The endosymbiotic theory has changed the way scientists think about the ancestral distinctions among the three domains by suggesting that eukaryotic cells evolved from symbiotic relationships between prokaryotic cells. This theory proposes that mitochondria and chloroplasts were once free-living bacteria that were engulfed by a host cell and eventually became organelles. This suggests that eukaryotic cells are a combination of both bacterial and archaeal characteristics, blurring the lines between the three domains. Additionally, the endosymbiotic theory supports the idea that all life on Earth is interconnected and has a shared evolutionary history.