Exam 3: Cells

A) hydrophobic
B) temperature
C) amphipathic
D) hydrophilic
E) mass

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A) plasma membrane
B) cytoplasm
C) endoplasmic reticulum
D) nucleus
E) lysosome

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A) because the functions of various cells vary so considerably
B) because of the embryonic tissue from which they originate
C) they do not vary that considerably if you consider that they are all cells
D) the temperature of the body where the cell resides dictates the shape
E) the number of cells that fused dictate the shape

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A) car seats
B) steering wheel
C) engine
D) radiator
E) exhaust pipe

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A) tight junctions
B) adherens junctions
C) desmosomes
D) hemidesmosomes
E) gap junctions

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A) glycoproteins
B) receptor proteins
C) ion channel proteins
D) carrier proteins
E) glycoproteins, receptor proteins, ion channel proteins, carrier proteins

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A) a cell shows signs of becoming cancerous
B) a tissue needs to cull the number of cells that make it up
C) an infection causes serious damage to some cells
D) a developing fetus removes cells from between its toes to eliminate the webbing

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A) membrane bound organelles outside the nucleus
B) membrane bound organelles that contain DNA, RNA and protein
C) a cluster of DNA, RNA and protein
D) a cluster of mitochondria in the nucleus
E) anomalies that appear during cell division

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A) glycolysis
B) building proteins
C) breakdown of proteins
D) cellular respiration
E) metal production

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A) they are enzymes that transfer a phosphate group from ATP to a protein to activate the protein
B) they are enzymes that transfer a phosphate group from ATP to a protein to deactivate the protein
C) they are enzymes that remove a phosphate group from a protein to activate the protein
D) they are enzymes that remove a phosphate group from a protein to deactivate the protein

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A) gene expression
B) transcription
C) translation
D) proteolysis
E) glycolysis

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A) it makes up about 55% of the volume of the cell
B) it helps maintain membrane fluidity
C) it is the fluid portion of the cytoplasm
D) it holds many dissolved substances
E) it is a site for many chemical reactions

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B

A) a cellular enzyme that switches cyclin-dependent protein kinases on and off
B) a second messenger that switches cyclin-dependent protein kinases on and off
C) a hormone that switches cyclin-dependent protein kinases on and off
D) a cellular protein that switches cyclin-dependent protein kinases on and off
E) a cell receptor that switches cyclin-dependent protein kinases on and off

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A) the molecular arrangement of the plasma membrane resembles an ever-moving sea of fluid lipids that contains a mosaic of many different proteins
B) the molecular arrangement of the plasma membrane resembles an ever-moving sea of fluid carbohydrates that contains a mosaic of many different proteins
C) the molecular arrangement of the plasma membrane resembles an ever-moving sea of fluid proteins that contains a mosaic of many different lipids
D) the molecular arrangement of the plasma membrane resembles an ever-moving sea of fluid phosphates that contains a mosaic of many different proteins

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A) enzyme protein
B) receptor protein
C) ion channel protein
D) carrier protein
E) glycoprotein

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A) taking the written word and writing it in cursive
B) taking the written word and rewriting it
C) taking the verbal word and writing it
D) taking one written language and reading it
E) taking one written language and writing in another language

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A) the carpet cleaner you use to clean the floor
B) the concrete below plywood and the floor
C) the plywood below your carpet
D) the carpet
E) the foundation of the building

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