NGR5140 Chapter 4 Questions with 100%
Correct Answers
cell membrane (aka plasma membrane)
Phospholipid bilayer; outer leaflet phospholipids are oriented with their polar head groups
facing outward toward extracellular fluid and the inner leadlet phospholipids are facing the
intracellular gluid
The nonpolar fatty acid tails of both leaflets of phospholipids in cell membrane make up
the _____________ ____ of the membrane; providing the critical barrier that separates
intracellular from extra cellular fluid
Hydrophobic core
Molecules of ___________ are interspersed with the phospholipids, controlling
membrane fluidity
Cholesterol
Integral proteins cross the membrane; some of these function as receptors, others as
__________ or ________
Transporters; channels
Peripheral proteins are often attached to the inner leaflet and work with integral
proteins to alter ____ _______
Cell function
The outer leaflet is reach in _____________ and ___________, with complex branching
carbohydrates attached
Glycoproteins and glycolipids
, The layer of sugars projecting outward from the cell is referred to as its ________ and it
functions in cell to cell recognition
Glycocalyx
Chromatin
Responsible for packaging DNA into a smaller volume so that it can fit inside the cell,
reinforces mitosis, prevents DNA damage, and controls DNA replication
Located inside the nucleus
Nucleolus
Found inside the nucleus and produces ribosomes and synthesizes them
Glycosomes
Sugar containing bodies; store sugar in the form of glycogen for the cell's main energy
source; how the cell gets its energy
Smooth endoplasmic reticulum
Lipid metsbolism; breaks down and uses fats
Cytosol
Fluid material; the liquid that is found inside the cell
Lysosome
Performs intracellular digestion; LYSOL disinfectant eats away germs :)
Mitochondria
Powerhouse of the cell; energy is generated so the cell can carry out its work
Centrioles
Correct Answers
cell membrane (aka plasma membrane)
Phospholipid bilayer; outer leaflet phospholipids are oriented with their polar head groups
facing outward toward extracellular fluid and the inner leadlet phospholipids are facing the
intracellular gluid
The nonpolar fatty acid tails of both leaflets of phospholipids in cell membrane make up
the _____________ ____ of the membrane; providing the critical barrier that separates
intracellular from extra cellular fluid
Hydrophobic core
Molecules of ___________ are interspersed with the phospholipids, controlling
membrane fluidity
Cholesterol
Integral proteins cross the membrane; some of these function as receptors, others as
__________ or ________
Transporters; channels
Peripheral proteins are often attached to the inner leaflet and work with integral
proteins to alter ____ _______
Cell function
The outer leaflet is reach in _____________ and ___________, with complex branching
carbohydrates attached
Glycoproteins and glycolipids
, The layer of sugars projecting outward from the cell is referred to as its ________ and it
functions in cell to cell recognition
Glycocalyx
Chromatin
Responsible for packaging DNA into a smaller volume so that it can fit inside the cell,
reinforces mitosis, prevents DNA damage, and controls DNA replication
Located inside the nucleus
Nucleolus
Found inside the nucleus and produces ribosomes and synthesizes them
Glycosomes
Sugar containing bodies; store sugar in the form of glycogen for the cell's main energy
source; how the cell gets its energy
Smooth endoplasmic reticulum
Lipid metsbolism; breaks down and uses fats
Cytosol
Fluid material; the liquid that is found inside the cell
Lysosome
Performs intracellular digestion; LYSOL disinfectant eats away germs :)
Mitochondria
Powerhouse of the cell; energy is generated so the cell can carry out its work
Centrioles
