Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?

1. Protostomes invade terrestrial environments.

2. Cambrian explosion occurs.

3. Deuterostomes invade terrestrial environments.

4. Vertebrates become top predators in the seas.

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#Question id: 8705

#SCPH28 | Zoology

If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

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#Question id: 571

#SCPH28 | Zoology

The steady state assumption, as applied to enzyme kinetics, implies:

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#Question id: 696

#SCPH05 I Biotechnology

An alpha helix would be destabilized most by:

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#Question id: 1559

#SCPH05 I Biotechnology

Which of cytokine is responsible for Class Switch IgM into IgE

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#Question id: 3652

#SCPH06 I Botany

Alkylating agents are electrophilic chemicals which readily add alkyl groups to various positions on nucleic acids. A common example is: