Biological Macromolecules Identifying molecules that could be in a cell membrane te for advanced students: none of these molecules are actually found in cell membranes. Your goal is to use the principles of biochemistry to dec ey could be, if for example they were synthesized and studied as drug candidates. 0 OH H₂N molecule Could be in a membrane? Membrane would be to the..? X CH3 O yes -left right- O no O yes - left right- по Ο O Oyes -left right→ О по Oyes -left right- Ono G
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- esc Decide whether each molecule in the table below could be found embedded in the outer surface of a cell membrane. For each molecule that could, decide whether the outside of the cell would lie to the right or left of the molecule as drawn. Note for advanced students: none of these molecules are actually found in cell membranes. Your goal is to use the principles of biochemistry to decide whether they could be, if for example they were synthesized and studied as drug candidates. HO. Explanation OH OH molecule OH Shellyy gezon Check NHS 20 CH3 000 000 CH3 Could be in a membrane? Oyes Ono O yes Ono g 8 yes no yes no Membrane would be to the..? + left right → + left + left + left MacBook Pro right → right → right → X 5 ? 圖 图〗 olo Ar © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | AccessibilityIntegral membrane proteins... Choose all that could apply are bound to the membrane by only interacting with the phospholipid's polar head O contain many amino acids with hydrophobic residues O contain alpha-helical membrane spanning domains O would not be digested by trypsin in a permeabilized cell O interact with the phospholipid core of the phospholipid bilayer11:28 PM Fri Oct 9 * 29% O T of + : Oct 8, 2020 at 2:10 PM NAME DATE PERIOD Cell Membrane Discovery Big Idea: Cells move materials in and out of their environment through the cell membrane in order to maintain (balance) or (equal state). Composition of the Cell Membrane & Functions: The cell membrane is also called the membrane and is made of a phospholipid The phospholipids have a (water attracting or polar) head and two (water repelling or non-polar) The head of a phospholipid is made of an alcohol and phosphate group, while the tails are 2 chains of fatty acids. Phospholipids can move apart and allow water and other molecules to pass through into or out of the cell. This is known as simple because it does not require and the molecules are moving from areas of concentration to an area of concentration. 1. LABEL a phospholipid bilayer coloring the heads red and the tails blue. 2. LABEL the structure that is hydrophobic and hydrophilic. PHOSPHOLIPID molecule membrane Another type of…
- account_circle Science Anatomy and PhysiologyQ&A LibraryWhich of the following statements regarding the selective permeability of the lipid bilayer is FALSE? A. the permeability of the lipid bilayer to different substances varies. B. The lipid bilayer component of the plasma membrane is highly permeable to nonvolatile molecules such as oxygen. C. The more hydrophobic or lipid soluble a substance is, the greater the lipid bilayers permeability to that substance. D. The lipid bilayer component of the plasma membrane is moderately permeable to ions and large, uncharged polar molecules Which of the following statements regarding the selective permeability of the lipid bilayer is FALSE? A. the permeability of the lipid bilayer to different substances varies. B. The lipid bilayer component of the plasma membrane is highly permeable to nonvolatile molecules such as oxygen. C. The more hydrophobic or lipid soluble a substance is, the greater the lipid bilayers…Given the following compositional assessment of a cell membrane, describe from ER to cell membrane how this composition was synthesized and why it is asymmetric? Cytoplasmic face Non-cytoplasmic face PI 25 8 PC 6 22 SM 4 23What's More Since you have already learned the principal components and functions of the cell membrane, the activity below is provided for you. The table below consists of three columns with the pictures found in the first column. Then, on the second column, you have to write the component of the cell membrane which is analogous to the presented pictures/illustrations. You can choose between PHOSPHOLIPID, CARBOHYDRATE, CHOLESTEROL, INTEGRAL PROTEINS, and PERIPHERAL PROTEINS which may be used more than once. Lastly, on the third column, you have to write the SPECIFIC FUNCTION of the component of the cell membrane that is depicted by each picture/illustration. PHOTO - COGNITION Component of the cell membrane being described Function being portrayed Picture Merle
- "Which of the following cell processes depend on the movement of membrane components and would not be possible if membranes were rigid, nonfluid structures?" cell movement cell division cell eating (phagocytosis) or cell drinking (pinocytosis) all of the given are not possible with rigid nonfluid structures.A2 Which of the following statements is NOT correct about the phospholipid molecules in the plasma membrane? * O The polar heads face outward The nonpolar tails face inward. O The polar heads are hydrophobic. O The nonpolar tails are hydrophobic. The phospholipids form a bilayer. This is a required questionAll the following is a function of membrane proteins EXCEPT: Cell-cell contact O Protein synthesis Transporting substances cross the membrane O Enzymatic activity which of the following sentences are INCORRECT: All living things are composed of one cells all cells have the same size The cell is the basic structural, O functional, and biological unit of all organisms Robert Hook discovered the cells
- What major type of molecule contributes to the formation of the cell membrane and what biochemical properties of this molecule promotes the formation of the membrane? What effect allows this type of molecule to come together to form a bilayer and explain how the effect works? A▾ B I I e 2 2At this point, go over your answers to the activit ies given earlier in this lesson before you fill out the table below. Table 20: Interdependence of Function and Fom in the Cell Membrane Which components of the cell membrane enable it to perform this function? Function of the Cell Membrane How do these components help the cell membrane in performing this function? iully control the passage of substances through its membrane. However, all activit ort, involve energy. This leads us to another characte As stated in the first section of this lesson, maintaining homeostasis requires ise this in poweringb) Cellular membranes are generally found in environments that contain lots of water. Draw a diagram of what the phospholipid bilayer of a plasma membrane would look like if it were placed in a hydrophobic environment. (**Note that you only have to draw the phospholipid bilayer, you don't have to draw the other major components again as you did in part a) poned In salt wer (ho byorout obods f.Cplan why sctive tnsport is requind in tive tre nolaib beisio c) What part or parts of a cellular membrane play(s) a role in determining the fluidity of the membrane? pslomlo below