Which of the following statements is the best definition of biogenesis?
a. Nonliving matter gives rise to living organisms.
b. Living cells can only arise from preexisting cells.
c. A vital force is necessary for life.
d. Air is necessary for living organisms.
e. Microorganisms can be generated from nonliving matter.

Verified step by step guidance

1. Identify the key term in the question: 'biogenesis'.
2. Recall the historical context of biogenesis, which is the principle that living organisms are derived from other living organisms.
3. Consider the options provided and eliminate those that do not align with the concept of life arising from preexisting life.
4. Option a suggests life from nonliving matter, which contradicts biogenesis.
5. Option b aligns with biogenesis as it states that living cells arise from preexisting cells.

Key Concepts

Biogenesis

Biogenesis is the principle that living organisms arise only from preexisting living cells. This concept contrasts with abiogenesis, which suggests that life can originate from nonliving matter. The idea of biogenesis was solidified through experiments by scientists like Louis Pasteur, who demonstrated that microorganisms come from other microorganisms, not spontaneously from nonliving substances.

Abiogenesis

Abiogenesis is the hypothesis that life can emerge from nonliving matter under certain conditions. Historically, this idea was widely accepted before the establishment of biogenesis. Experiments, such as those by Stanley Miller, aimed to simulate early Earth conditions to explore how organic compounds could form, but biogenesis ultimately provided a more robust explanation for the origin of life.

Cell Theory

Cell Theory is a fundamental concept in biology that states all living organisms are composed of cells, and all cells arise from preexisting cells. This theory underpins the understanding of biological processes and the continuity of life. It emphasizes the importance of cells as the basic unit of life, reinforcing the idea of biogenesis in the context of cellular reproduction.