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Worksheets4.1 Membranes of the Cell
Total questions: 17
Worksheet time: 9mins
What does the term “homeostasis” mean?
respond to their environment.
maintain a stable internal environment.
made up of units called cells.
based on a universal genetic code.
What is the function of a cellular membrane?
Keep structure and support for the cell
Help regulate homeostasis and the flow of materials in and out of the cell
Produce proteins for the cell
control the activity of the cell
The cell membrane is made up of
rigid cellulose outer layer
Phospholipid bilayer
triglyceride molecules
complex of enzymes
The tails of the cell membrane are
Hydrophobic, and they face towards in excellular fluid and intracellular cytoplasm
Hydrophobic, and they face towards the middle of the membrane
Hydrophilic, and they face towards in excellular fluid and intracellular cytoplasm
Hydrophilic, and they face towards the middle of the membrane
The heads of the cell membrane are
Hydrophobic, and they face towards in excellular fluid and intracellular cytoplasm
Hydrophobic, and they face towards the middle of the membrane
Hydrophilic, and they face towards in excellular fluid and intracellular cytoplasm
Hydrophilic, and they face towards the middle of the membrane
The cell membrane is considered to be a fluid mosaic because
it is flexible and has numerous proteins and carbohydrates embedded within the bilayer
it is flexible and has numerous acids and carbohydrates embedded within the bilayer
it is rigid and has numerous proteins and carbohydrates embedded within the bilayer
The lipid that helps keep the cell fluid.
Glycogen
Cellulose
Starch
Cholesterol
Membrane proteins function to
help to transport ions and polar molecules into and out of the cell.
help to stabilize and shape the membrane
allow the cell to be recognized by other cells.
All of the above
Proteins with a tube like opening that allow large particles in and out of the cell.
Channel protein
Integral protein
Peripheral protein
Carrier protein
Proteins that can grab material on one side of the membrane and release it on the other.
Channel protein
Integral protein
Peripheral protein
Carrier protein
This is evidence that chloroplasts and mitochondria were once free-living organisms, “captured” by a primitive eukaryotic cell. This is referred to as…
two membrane theory.
eukaryotic theory.
chloro-mitochondrial theory.
endosymbiotic theory.
Membranes make up the nucleus, endoplasmic reticulum (ER), and Golgi apparatus inside the cell. These are sometimes considered a single, interconnected system called the…
cell membrane interior.
endomembrane system.
interconnected cellular highway.
Which of the following are also made of a bilayer membrane?
Endoplasmic Reticulum
Nuclear Membrane
Golgi Complex
All of the above
To reach the Golgi apparatus, substances from the ER are packaged into ____________, sections of membrane that bud off the ER and form sacs that move through the cytoplasm and fuse with the membrane of the Golgi apparatus.
Proteins
Ribosomes
Vesicles
Lysosomes
In the above diagram, what does 1 represent?
A phospholipid
A cell membrane
Heads
Tails
In the above diagram, what is 2 pointing to?
Hydrophobic head
Hydrophobic tails
Hydrophilic head
Hydrophilic tails
In the above diagram, what is 3 pointing to?
Hydrophobic head
Hydrophobic tails
Hydrophilic head
Hydrophilic tails
