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Search Results for bilayer - All Grades

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Grade 11 Cell Structure and Function
The core of nearly all cell membranes is a double-layered sheet called a
  1. protein layer.
  2. lipid bilayer.
  3. protein bilayer.
  4. none of the above
Grade 9 Microbiology
Retroviruses contain
  1. DNA.
  2. RNA.
  3. a lipid bilayer.
  4. peptidoglycans.
Grade 10 Cell Structure and Function
College Skin, Skeleton, and Muscles
Bones are covered with a tough bilayered membrane called?
  1. peritoneal
  2. periosteum
  3. fascia
  4. epiphysis
Grade 9 Cell Structure and Function
Why is the phospholipid bilayer critical to cell function?
  1. It forms a shell around the cell nucleus.
  2. Phospholipids allow water-soluble substances to pass easily into cells.
  3. Transport proteins are blocked from entering the plasma membrane.
  4. The arrangement of phospholipids enables selective permeability.
Grade 9 Microbiology
The cell wall of bacteria is composed of (a)
  1. lipid bilayer.
  2. cellulose.
  3. peptidoglycan.
  4. phospholipids.
Grade 9 Cell Structure and Function
Plant cell walls are composed of
  1. chitin.
  2. cellulose.
  3. nucleic acids.
  4. phospholipid bilayers.
Grade 10 Cell Structure and Function
Grade 10 Cell Structure and Function
Which statement describes the lipid bilayer of the plasma membrane?
  1. provides a boundary between the cell and its surroundings
  2. forms vesicles
  3. transports substances into and out of the cell
  4. all of the above
Grade 12 Cell Structure and Function
These molecules form the lipid bilayer which surrounds each cell.
  1. triglycerides
  2. carbohydrates
  3. phospholipids
  4. steroids
Grade 9 Cell Structure and Function
What is the basic structure of a cell membrane?
  1. chitin
  2. cellulose
  3. fatty acid layer
  4. phospholipid bilayer
Grade 10 Cell Structure and Function
Which type of molecules cannot pass through the phospholipid bilayer?
  1. large molecules (e.g., proteins)
  2. larger polar molecules (e.g., glucose, nucleic acids)
  3. small polar molecules (occasionally water molecules)
  4. small nonpolar molecules (e.g., O2, CO2)
  5. charged molecules (e.g., Na+, Cl-)
Grade 9 Cell Structure and Function
What structure makes up a cell membrane?
  1. carbon ring
  2. double helix
  3. carbon chain
  4. phospholipid bilayer
Grade 10 Cell Structure and Function
Grade 10 Cell Structure and Function
Of what are cell membranes mainly constructed?
  1. lipid bilayers
  2. protein pumps
  3. carbohydrate gates
  4. free-moving proteins
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