Choose the Paramagnetic Atom or Ion: Zn, Zn²⁺, Mn²⁺, Ar

question 42

Multiple Choice

Choose the paramagnetic atom or ion: Zn, Zn²⁺, Mn²⁺, Ar, Al³⁺.

• A) Zn
• B) Zn²⁺
• C) Mn²⁺
• D) Ar
• E) Al³⁺

Identify the characteristics and significance of the earliest cells.

Understand the origin and evolution of organic molecules and life.

Grasp the concept of chemical and organic evolution.

Recognize the role of RNA in the early stages of life.

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Definitions:

Histones

Proteins that package and order the DNA into structural units called nucleosomes.

Transcriptionally Active

Refers to genes that are currently being expressed, with their DNA being transcribed into messenger RNA.

Euchromatin

A loosely coiled chromatin that is generally capable of transcription. Compare with heterochromatin.

Heterochromatin

Heterochromatin is a tightly packed form of DNA, which makes it transcriptionally inactive, contributing to the regulation of genes and maintenance of chromosome structure.