How did eukaryotic cells emerge?
This article discusses the emergence of eukaryotic cells, first explaining the differences between prokaryotic and eukaryotic cells, introducing the endosymbiosis hypothesis put forward by Margulis in the 1960s, and explaining that anaerobic cells absorb aerobic cells, autotrophic cells form mitochondria, chloroplasts, and ultimately constitute eukaryotic cells. The process also mentions the progress of artificial synthesis of living substances or helps answer the question of cell origin.
How the world's first cells were created?
This article focuses on the world's first issue of cell origin. It mentions that in 2012, the American Discovery News revealed that the University of Oslo in Norway discovered the oldest single-celled organism 1 billion years ago. Combined with the chemical evolution hypothesis, it explains the formation process from small organic molecules to prokaryotic cells in the early earth, and related characteristics of modern cell membrane structure.
Will life on earth never change?
This article focuses on "Are life on earth forever unchanged?" and lists many facts about the changes of biological types over time, such as fossil records, living fossil examples, biological differences in the Galapagos Islands, and the evolution of domestic animals and plants from wild species., negates the view that life will never change in creationism, and mentions that there is no complete answer to the source of life.
Why is the virus both lifeless and alive?
Viruses have the characteristics of neither life nor life: Viruses are protein-wrapped nucleic acid complexes. They have no vital abilities such as metabolism, reproduction and genetic variation outside the cells, and are non-life; after entering cells, they can use host materials to metabolize and reproduce, appearing life characteristics, becoming a living body.
what is life?
Life covers all types of organisms of wide sizes. Life has characteristics such as cell structure, metabolism, reproduction, genetic variation, and adaptation to the environment. Although the research results are quite fruitful, due to the complexity of organisms, there is no recognized definition of life. It is also mentioned that cells are the basic building blocks of life.
Why study life sciences?
This article explains the reasons for studying life sciences, including answering the mysteries of life, responding to crises such as food and environment, exploring genetic variations and genetic laws, mentioning relevant research results, and pointing out that the 21st century is the century of life sciences, and there is a long way to go for research.
