AnswersRVACR EcologyCharacteristics of Life

Characteristics of Life — Cumulative exam Answers

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The role of the cell membrane is most like the job of which person?

A
a firefighter who evacuates people from a burning building
B
a police officer who allows select people to enter and leave a crime scene
C
a bus driver who drives the express route from the suburb to downtown
D
a teacher who keeps students in the classroom during an exam
22
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It is crucial that the process of mitosis is error free. This is because otherwise healthy cells can

A
grow into giant super cells.
B
undergo meiosis.
C
become cancer cells.
D
produce two identical cells.
23

Which structure is found in the cytoplasm of a prokaryotic cell, but is not found in the cytoplasm of a eukaryotic cell?

A
DNA
B
ribosomes
C
nucleus
D
mitochondria
24

Which correctly describes crossing over?

A
the process whereby non-sister chromatids exchange genetic material
B
the process whereby homologous chromosomes are pulled to opposite poles of the cell
C
the process whereby sister chromatids are pulled to opposite poles of the cell
D
the process whereby homologous chromosome pairs align randomly along the metaphase plate
25

A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the cell could be classified?

A
The cell is prokaryotic because it has DNA.
B
The cell is prokaryotic because it has cytoplasm.
C
The cell is eukaryotic because it has a cell membrane.
D
The cell is eukaryotic because it has chloroplasts.

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