The Evolution of Which Class of Molecules Played an Important

question 48

Multiple Choice

The evolution of which class of molecules played an important role in the development of multicellular organisms? ​

• A)G proteins
• B)protein kinases
• C)second messengers
• D)ligand-gated ion channels
• E)steroid hormones

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Definitions:

Fraternal Twins

Twins that develop from two different eggs fertilized by two different sperm cells, making them genetically distinct, unlike identical twins.

Identical Twins

Twins who develop from a single fertilized egg that splits, sharing the same genetics.

Epigenetic Marks

Variations in DNA and histone proteins that contribute to the regulation of gene expression without changing the sequence of the DNA.

Peer Pressure

The impact a peer group has, prompting individuals to modify their attitudes, values, or behaviors in order to align with the norms of the group.