Exam 3: The Cell: The Fundamental Unit of Life

A) The nuclear membrane is completely sealed,whereas the plasma membrane is not.
B) The nuclear membrane is chemically active,whereas the plasma membrane is not.
C) The nuclear membrane has two phospholipid bilayers,whereas the plasma membrane has one.
D) The nuclear membrane has no structural proteins,whereas the plasma membrane has structural proteins.

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A) Something small and nonpolar,like nitrogen gas
B) Something small and dipolar,like a water molecule
C) Something small and charged,like an ion
D) Something large,like a glucose molecule

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A) In the cytoplasm
B) In the endoplasmic reticulum
C) In the nucleolus
D) In the nucleus

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Bacteria lack a nucleus to house the DNA...

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A) Cell division
B) Movement of the flagellum
C) Water storage
D) Excess water removal

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A) Contains the instructions for how to build a protein
B) Acts as a spool around which the DNA is wrapped
C) Assembles the ribosome subunits
D) Maintains the structural integrity of the nuclear membrane

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A) Yes,they first appear in the fossil record around 3.5 billion years ago.
B) Yes,they first appear in the fossil record around 2 billion years ago.
C) No,they do not appear in the fossil record until around 1 billion million years ago.
D) No,they do not appear in the fossil record until around 500 million years ago.

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A) They are made of different materials.
B) They perform different functions.
C) They are found in different portions of the cell.
D) There is no difference; they are fundamentally identical.

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A) Your blood cells would stay the same size but could no longer carry oxygen.
B) Your blood cells would stay the same size but could no longer release the oxygen they carry.
C) Your blood cells would enlarge and may rupture.
D) Your blood cells would shrivel.

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A) It has a cell membrane.
B) It has DNA.
C) It has plasmids.
D) It is moving.

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A) Ribose
B) Replacement
C) Ribosomal
D) Reticulum

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A) Transcription
B) Translocation
C) Translation
D) Transference

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A) Ribosome
B) Golgi apparatus
C) Lysosome
D) Chloroplast

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A) The entire plasma membrane turns itself inside out.
B) It is the digestion of larger molecules that were brought into the cell.
C) It is the bulk transport of materials into the cell.
D) It is the transport of a substance into the cell coupled with the transport of a substance out of the cell.

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A) They are the only organelles wrapped in a lipid-based membrane.
B) They are the only organelles that produce ATP.
C) They are the only organelles that contain DNA.
D) They are the only organelles not found in bacteria.

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