Practice Questions

TLS Online TPP Program

#Question id: 4944

What is true of the amino acids that might have been delivered to Earth within carbonaceous chondrites?

#11. Evolution and Behavior

They had the same proportion of L and D isomers as Earth does today.
The proportion of the amino acids was similar to those produced in the Miller-Urey experiment.
There were fewer kinds of amino acids on the chondrites than are found in living organisms today.
They were delivered in the form of polypeptides.

More Questions

#Question id: 5012

#11. Evolution and Behavior


A	Silurian	I	Seed plants appear
B	Devonian	II	Gymnosperms dominant
C	Carboniferous	III	Invasion of land by primitive land plants
D	Jurassic	IV	first reptiles

#Question id: 5014

#11. Evolution and Behavior

Following geological time period and major evolutionary event?

I. Devonian A. Gymnosperms dominant

II. Jurassic B. Amphibians diversify; first reptiles

III. Carboniferous C. Mammals appear

IV. Triassic D. Seed plants appear

#Question id: 5015

#11. Evolution and Behavior

During which of the following largest mass extinction recorded in the history of life on Earth.

#Question id: 5017

#11. Evolution and Behavior

Arrange these events from earliest to most recent.

1. emission of lava in what is now Siberia at time of Permian extinctions

2. emission of lava that solidified at the same time as iron-bearing terrestrial rocks began to rust

3. emission of lava that solidified at the same time as rusted iron precipitated from seawater

4. emission of lava in what is now India at time of Cretaceous extinctions

#Question id: 5018

#11. Evolution and Behavior

Which event is nearest in time to the end of the period known as snowball Earth?

#Question id: 5019

#11. Evolution and Behavior

A major evolutionary episode that corresponds in time most closely with the formation of Pangaea was the