What'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

What'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

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 11RQ: The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a....

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The image below shows the movement of molecules across a plasma membrane. extracellular space lipid bilayer (cell membrane) TIMEI Source: LadyofHats small hydrophobic molecules intracellular space Using the image above, answer the following questions. (a) Identify the type of cell transport that is occurring in the image and justify your answer. (b) Explain the fluid mosaic model of the cell membrane as i relates to the movement of mole- cules illustrated in the figure. answer. (c) Predict the difference you would expect to see in the movement of illustrated molecules if they were to represent hydrophilic molecules rather than hydrophobic molecules. Justify your
At 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 powering
"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.
A given substance would require active transport across a lipid bilayer into a cell if... (choose all that apply): it has an electrical charge it is a large and polar it is present at a lower concentration inside the cell it is present at a higher concentration inside the cell
You will create a hand drawn, 2-dimensional, labelled diagram of the plasma membrane (not a 3D diagram). Label the following structures in your diagram: A phospholipid A peripheral protein An integral protein A cholesterol Intracellular and extracellular portion of the membrane Hydrophobic and hydrophilic areas Also include a detailed drawing of a single phospholipid labeling its component
Plasma membrane phospholipid asymmetry: O is maintained when vesicles are endocytosed such that the outer leaflets of both structures have an identical composition. requires the activity of scramblase. O is maintained by flippase. O relies on the spontaneous self-organization of lipid components. O is lost when vesicles are formed.
Membrane synthesis in the cell involves the movement of specific of phospholipids to the cytosolic face or non-cytosolic face (also known as extracellular face) of the membrane to achieve their mature distribution. Which enzyme non-selectively moves phospholipids between the two faces of the lipid bilayer? convertases flippases phospholipases scramblases floppases
Cells that line your intestines are specialized for nutrient absorbtion and are known to possess numerous membrane proteins that transport small molecules and ions across the plasma membrane. Which of the following cell structures would you expect to be required for this function of the cells? The endoplasmic reticulum Lysosomes Peroxisomes or Cell walls
As part of their function, membrane-bound organelles, such as mitochondria and the en- doplasmic reticulum, must move substances across their membranes. Which of the following statements best describes a feature shared by mitochondria and the endoplasmic reticulum that increases the efficiency of their functions? A B с D double membranes, in which one membrane encloses the other rigid and nonfluid membranes membranes composed of carbohydrates highly folded membranes
Membrane proteins are key components of a typical cell membrane. Explain the importance of the proteins inside membranes to the cell membrane itself, and overall life. Include a diagram that illustrates . Your labelled diagram needs to show two different types of transport proteins embedded within a typical cell 1. membrane. 2. Serine is an uncharged, polar amino acid (below and left). Threonine (below and right) is another uncharged, polar amino acid. Illustrate the hydrolysis of a dipeptide that was made from these two amino acids. Be sure to write all involved reactants and products in the structural form like Serine, and as a proper chemical equation; e.g. reactant(s) - product(s). Your diagram of the dipeptide must show the N-terminal and C-terminal ends at opposite sides of the dimer molecule, and you need to indicate where the peptide bond is with an arrow/highlighter. „H C-N OH NH2 но CH — CH -с-соон он H
DO NOT COPY THE ANSWER FROM THE SAME QUESTION. Sassa, a biology professor, wanted to demonstrate to her students the applicability of a dialyzing membrane (DM) as a model for the cell membrane by enclosing an aqueous solution in a DM bag and immersing in a beaker containing a different solution. Substances available which are permeable to the DM include 0.02 M NaCl, 0.03 M glucose, and 0.01 M glucose. The only substance available which is completely impermeable to the DM is the 0.01 M lactose. Using the substances given and materials such as a beaker, stirring rod, and string, draw ONLY ONE set-up that can be demonstrated by Ms. Sassa that will satisfy ALL of the following conditions:a. No solute will exhibit a net diffusion out of the cell.b. Glucose will exhibit a net diffusion into the cell.c. NaCl will exhibit a zero net d. No net movement of lactose from the inside to outside of the cell. Make sure to label properly the substance inside the beaker and inside the DM bag.
Using the space below, draw a model (picture, representation) of a cross-section of a cell membrane, including and labeling the following elements: a. Phospholipid bilayer, noting hydrophilic heads and hydrophobic tails b. Cholesterol c. Integral membrane proteins (include 1 glycoprotein and label the carbohydrate) d. Peripheral membrane proteins Describe how integral membrane proteins and peripheral membrane proteins are different in your own words, and include in your description what type of amino acids you might find on these proteins.