Biology 141 Delgado Test 2 Questions and
Answers (100% Pass)
The cell membrane is also called the ______ and is made of a
phospholipid _______ - Answer️️ -plasma membrane / bi-layer
The phospholipids have a hydrophillic (water attracting) _____ an
two hydrophobic (water repelling) ______ -...
Biology 141 Delgado Test 2 Questions and
Answers (100% Pass)
The cell membrane is also called the ______ and is made of a
phospholipid _______ - Answer✔️✔️-plasma membrane / bi-layer
The phospholipids have a hydrophillic (water attracting) _____ an
two hydrophobic (water repelling) ______ - Answer✔️✔️-head / tails
The head of a phospholipid is made of an alcohol and _____ group,
while the tails are chains of _______ - Answer✔️✔️-glycerol / fatty
acids
Phospholipids can move _____ and allow water and other _______
molecules to pass through into or out of the cell. - Answer✔️✔️-
sideways / non-polar
This is known as ________ because it does NOT require ____ and the
water or molecules are moving ____ the concentration gradient -
Answer✔️✔️-passive transport / energy / with
Another type of lipid in the cell membrane is ______ that makes the
membrane more fluid. - Answer✔️✔️-cholesterol
Embedded in the phospholipid bilayer are ______ that also aid in
diffusion and in cell recognition. - Answer✔️✔️-proteins
DELGADO COMMUNITY COLLEGE
Proteins called ____ proteins go all the way through the bilayer,
while _______ proteins are only on one side. - Answer✔️✔️-integral /
peripheral
Integral proteins are also called _______ proteins. - Answer✔️✔️-
transmembrane
Large molecules like _____ or carbohydrates use proteins to help
move across cell membranes. - Answer✔️✔️-proteins
some of the membrane proteins have carbohydrate _____ attached
to help cells in recognize each other and certain molecules. -
Answer✔️✔️-parts
List 4 functions of the cell or plasma membrane: - Answer✔️✔️-1.
Cell signaling
2. Selective transport
3. Remove wastes
4. Structural support
Attracts water - Answer✔️✔️-phosphate heads
Helps maintain flexibility of membrane - Answer✔️✔️-cholesterol
Involved in cell-to-cell recognition (2) - Answer✔️✔️-glycoprotein and
glycolipids
Repels water - Answer✔️✔️-fatty acid tails
2
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