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Kardong 1e
An Introduction to Biological Evolution
Kenneth Kardong, Washington State University---Pullman
Emergence of Life

Practice Quiz



1

Atmospheric conditions on the young Earth were unsuitable for the generation of organic molecules.
A)TRUE
B)FALSE
2

Which of the following structures are not found in bacteria?
A)mitochondria
B)cell walls
C)ribosomes
D)plasma membranes
3

High levels of atmospheric oxygen were necessary for the origin of life on Earth.
A)TRUE
B)FALSE
4

Which of the following phenomena occur only in eukaryotes?
A)photosynthesis
B)sexual reproduction
C)multicellularity
D)More than one of the above.
5

Eukaryotes are believed to have originated from mutualistic associations between prokaryotic cells.
A)TRUE
B)FALSE
6

Which of the following is NOT a difference between DNA and RNA?
A)The nucleotides of DNA and RNA contain different sugars.
B)The nucleotides of RNA contain uracil instead of thymine.
C)DNA contains both purines and pyrimidines, whereas RNA contains only purines.
D)More than one of the above.
7

Which of the following statements is true?
A)Eukaryotes have both DNA and RNA, but prokaryotes have only DNA.
B)Eukaryotic mRNA must have introns removed before translation; introns are absent from prokaryotic genes.
C)Prokaryotes have linear chromosomes, whereas eukaryotes have circular chromosomes.
D)Prokaryotes have single-stranded DNA, whereas eukaryotes have double-stranded DNA.
8

ATP is a molecule that stores energy involved in cellular metabolism.
A)TRUE
B)FALSE
9

Which of the following pathways is involved in carbon fixation in plants?
A)Calvin cycle
B)Krebs cycle
C)glycolysis
D)transcription
10

Which of the following organic molecules are NOT derived from photosynthetic products?
A)starches
B)cellulose
C)carbohydrates
D)proteins
11

Although oxygen is necessary for most of life on earth now, it was harmful to the earliest organisms.
A)TRUE
B)FALSE
12

Based on fossil evidence, roughly how long ago did eukaryotes appear?
A)4 billion years
B)2 billion years
C)600 million years
D)65 million years
13

Photosynthetic organisms are
A)heterotrophs.
B)autotrophs.
C)omnitrophs.
D)prokaryotrophs.
14

What organisms are thought to have generated the first substantial O2 found in the earth's atmosphere?
A)trees
B)heterotrophic bacteria
C)mammals
D)cyanobacteria








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