The Biologist John Needham Hypothesized That

question 32

Multiple Choice

The biologist John Needham hypothesized that:

• A) Life is created through the agency of hydrogen.
• B) Life comes only from life.
• C) Life is created by the action of oxygen on a nutrient solution.
• D) The seeds of all living forms are hidden in water.
• E) Microbes are deposited in nutrient solutions by dust particles in the air.

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Definitions:

Mechanistic Pathways

The specific sequences of steps or reactions that lead to a chemical reaction or transformation.

E Isomer

Refers to the geometric configuration of molecules where substituents are on opposite sides of a double bond or around a ring structure.

E2 Mechanism

The E2 mechanism is a bimolecular eliminative reaction in organic chemistry where a hydrogen atom is removed from a β-carbon as a leaving group departs, forming a double bond.

Stereochemistry

The branch of chemistry concerned with the spatial arrangement of atoms in molecules and the impact of this arrangement on chemical reactions and properties.