Archaea and the History of Life on Earth This activity will help you meet these educational goals: You will communicate scientif

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Archaea and the History of Life on Earth This activity will help you meet these educational goals: You will communicate scientif

ic ideas about the phenomena of a process or system using multiple formats, including text. You will apply scientific reasoning to determine if available data and evidence support a given claim. You will write routinely over short or long periods of time on a variety of topics and for a range of audiences. Directions Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write a brief evaluation of your work. Activity All life is made of cells, but all cells also have a shared history. Watch the video “Archaea and How DNA Began,” and answer the questions that follow. Part A Using evidence from the video, describe three characteristics of life that Archaea bacteria have. Font Sizes Characters used: 0 / 15000 Part B What similarities and differences do you see between the bacteria and the human cells shown in the video? Are these cells prokaryotes or eukaryotes? Font Sizes Characters used: 0 / 15000 Part C Given the living conditions of Archaea, what mechanisms do you think they have to regulate homeostasis? Font Sizes Characters used: 0 / 15000

Biology

1 answer:

s2008m [2.3K] · Answer 1 · 2026-04-03T13:56:06+03:00

Answer:

Edmentum's sample answers

Explanation:

- Part A: The illustration of Archaea bacteria shown in the video indicated that this organism consists of one cell with a defined boundary. Scientists are aware that it reproduces by transferring genetic material, as evidenced by the presence of Archaea's genes in our modern DNA.

- Part B: Both cell types exhibited a distinct boundary. However, bacterial cells were shaped like rods, while human cells appeared round. Human cells contained a clearly defined nucleus along with other cellular structures. Conversely, bacteria had a darkened region at the center that did not constitute a true nucleus. Furthermore, bacteria are single-celled, whereas humans are multicellular organisms. Bacteria belong to the prokaryote category; human cells fall under the eukaryote classification.

- Part C: They thrive in extremely hot conditions, necessitating mechanisms to regulate their internal temperatures.

- Part D: Does the gene EEF1 ALPHA1 lend support to cell theory? Justify your answer

The EEF1 ALPHA1 gene does support cell theory, which asserts that all living organisms consist of cells. As all living beings carry this gene that traces back to an organism existing billions of years ago, it seems logical to conclude that life on Earth emerged from the earliest life forms. This perspective explains the universal cellular composition of all life forms on our planet.