APHY 201 Module 01 CH 3 Ivy Tech Exam Questions with Correct Answers
Question 1:
3 major parts of a cell
Answer:
....cell membrane, cytoplasm, nucleus
Question 2:
Plasma membrane
Answer:
....a phospholipid bilayer that creates a barrier between the inside of a cell
(intracellular fluid) and the exterior (extracellular fluid); acts in transporting substances into or
out of the cell; externally facing proteins acts as receptors, transport proteins, and in cell-to-cell
recognition
Question 3:
Fluid mosaic model of plasma membrane phospholipids arrange with
embedded proteins and cholesterol into a phospholipid bilayer to form the plasma
Answer:
....Polar, hydrophilic heads and nonpolar, hydrophobic tails of membrane of the cell
Question 4:
Membrane lipids
5% glycolipids (sugar attachments oriented to extracellular surface)
Answer:
....75% phospholipids (lipid bilayer) 20% cholesterol
Question 5:
Membrane proteins
Answer:
....Allow communication with environment
Question 6:
Most specialized membrane functions
Answer:
½ mass of plasma membrane
, Question 7:
Integral membrane proteins
Answer:
....Firmly inserted into membrane (most are transmembrane) Have
Question 8:
Can interact with lipid tails and water
Answer:
hydrophobic and hydrophilic regions
Function as transport proteins (channels and carriers), enzymes, or receptors
Question 9:
Peripheral membrane proteins
Answer:
....Loosely attached to integral proteins
Function as enzymes; motor proteins for shape change during cell division and muscle
contraction; cell-to-cell connections
Question 10:
Glycocalyx
Answer:
...."Sugar covering" at cell surface involved with cell recognition. Every cell type has different
Question 11:
Allows immune system to recognize "self" and "non self"
Answer:
pattern of sugars with specific biological markers for cell recognition.
Question 12:
Glycoprotein
Answer:
....a protein with one or more carbohydrates attached that face the extracellular surface
Question 13:
Glycolipid
Answer:
....a lipid attached to one or more carbohydrates
Question 1:
3 major parts of a cell
Answer:
....cell membrane, cytoplasm, nucleus
Question 2:
Plasma membrane
Answer:
....a phospholipid bilayer that creates a barrier between the inside of a cell
(intracellular fluid) and the exterior (extracellular fluid); acts in transporting substances into or
out of the cell; externally facing proteins acts as receptors, transport proteins, and in cell-to-cell
recognition
Question 3:
Fluid mosaic model of plasma membrane phospholipids arrange with
embedded proteins and cholesterol into a phospholipid bilayer to form the plasma
Answer:
....Polar, hydrophilic heads and nonpolar, hydrophobic tails of membrane of the cell
Question 4:
Membrane lipids
5% glycolipids (sugar attachments oriented to extracellular surface)
Answer:
....75% phospholipids (lipid bilayer) 20% cholesterol
Question 5:
Membrane proteins
Answer:
....Allow communication with environment
Question 6:
Most specialized membrane functions
Answer:
½ mass of plasma membrane
, Question 7:
Integral membrane proteins
Answer:
....Firmly inserted into membrane (most are transmembrane) Have
Question 8:
Can interact with lipid tails and water
Answer:
hydrophobic and hydrophilic regions
Function as transport proteins (channels and carriers), enzymes, or receptors
Question 9:
Peripheral membrane proteins
Answer:
....Loosely attached to integral proteins
Function as enzymes; motor proteins for shape change during cell division and muscle
contraction; cell-to-cell connections
Question 10:
Glycocalyx
Answer:
...."Sugar covering" at cell surface involved with cell recognition. Every cell type has different
Question 11:
Allows immune system to recognize "self" and "non self"
Answer:
pattern of sugars with specific biological markers for cell recognition.
Question 12:
Glycoprotein
Answer:
....a protein with one or more carbohydrates attached that face the extracellular surface
Question 13:
Glycolipid
Answer:
....a lipid attached to one or more carbohydrates
