AnswersLHS Biology 1Unit Test

Prokaryotic and Eukaryotic Cells Answers

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1
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Which statement does not support the endosymbiotic theory?

A
Mitochondria and chloroplasts reproduce independently from the cell.
B
Mitochondria and chloroplasts contain their own ribosomes.
C
Mitochondria and chloroplasts have DNA that resembles bacterial DNA.
D
Mitochondria and chloroplasts are much larger than prokaryotic cells.
2
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What is the basic unit of structure and function of all living organisms?

A
mitochondrion
B
DNA
C
nucleus
D
cell
3

The discovery of mitochondrial DNA (mtDNA) had no effect on which area of scientific investigation?

A
endosymbiotic theory
B
inheritance research
C
forensic science
D
study of cork bark
4

Which best describes mitochondrial DNA (mtDNA)?

A
Mitochondrial DNA is the same as nuclear DNA.
B
Mitochondrial DNA is inherited through the father.
C
Mitochondrial DNA can be traced for generations.
D
Mitochondrial DNA requires large amounts for testing.
5

Which statement is most likely to apply to a cell that has DNA within its cytoplasm?

A
It lacks ribosomes.
B
It has membrane-bound organelles.
C
It is multicellular.
D
It performs all functions for the organism.
6

Which cell structure serves the stated function in both eukaryotic and prokaryotic cells?

A
nucleus: stores genetic material
B
cytoplasm: protects cell structures
C
ribosomes: regulate cell processes
D
DNA: surrounds cell contents
7

Which structure is unique to eukaryotic cells?

A
DNA
B
cell membrane
C
ribosomes
D
nucleus
8

The endosymbiotic theory helps to explain the origin of which structures?

A
mitochondria
B
ribosomes
C
nuclei
D
cell membranes
9

Based on the endosymbiotic theory, what cell would result from the endosymbiosis of a cell with a cyanobacterium?

A
a eukaryotic cell that can make its own food
B
a prokaryotic cell that can make its own food
C
an aerobic bacterium
D
an anaerobic bacterium
10

A student wonders whether removing the nucleus from a cell would result in a new prokaryotic cell. Why would this procedure fail to produce a prokaryotic cell?

A
The cell would lack genetic information.
B
The cell would lack the structure that is needed to produce energy.
C
The cell would lack the structure that is needed to protect the cell’s organelles.
D
The cell would lack control over materials that move into and out of the cell.

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