Short Question:-2 Course Code: BIO121 Course Name: Principles of Biology I (a) Plasma membrane is said to be selectively permeable. Explain what is meant by that. (b) Describe the differences between a plant cell and animal cell. (c) List the three animal cell junctions and give their functions

dentify the structure labeled A (thick line) I Choose | (Choose dentify the structure labeledB Cell membrane dentify the structure labeledC Cell wall Nucleus Jentify the structure labeled D (thin line belween the whiteeand purple) yloplasm

a cell defense worksheet (1) [Compatibility Mode] Qv Search in Document Insert Draw Design Layout References Mailings Review View Acrobat + Sha 三,三, Century Gothic , 12 A A- Aa A IU abe X, x² Styles Styles Pane Create and Share Reque Adobe PDF Signatu What does polar mean? Hydrophilic Step 8: Insert channel proteins into the membrane. Transport substances across the membrane. Note: You can only transport substances using channel proteins until there were What is this process called? Step 9: Moving from to concentration requires the use of energy to substances. This is called transport and uses: (place answer in table) 1. 2. Which is cell Step 10: Carbohydrates are like identification badges. Cells that have different membrane The immune system uses the carbohydrates to carbohydrates do different that your cells belong to and are not or other foreign cells. What does the immune system do to foreign invaders? 149% E Focus 目 Page 2 of 3 505 words English (United States) MAR 15 MacBook Air…

Cleavage Ligand Precursor Receptor Inactive Receptor Active Cell Membrane 6. The figure above shows a model of a ligand precursor being cleaved to produce an active ligand that binds to a specific receptor. Which of the following is most likely to reduce the binding of the active ligand to its receptor? (A) A change in the cytoskeletal attachment of transmembrane proteins (B) The presence of a large amount of the precursor form of the ligand (C) An increase in the ratio of the number of unsaturated to the number of saturated fatty acid tails of the membrane lipids (D) A mutation in the receptor gene that causes a substitution of a charged amino acid for a nonpolar amino acid in the ligand binding site of the receptor

Hello, i understand the question, but i only need to know which option is right, no need for explanation. thanks in advance.

ex51

ER lumen: C- terminus or N- terminus Golgi apparatus- C- terminius or N- terminus transport vesicles lumen- C-terminus or N-terminus

Name the three major assumptions made by the "Cell theory". (i) The lipid membrane is composed of lipid molecules. Explain the principle of membrane formation highlighting the role of the physical properties of the lipids. (ii) Comparing dimensions and length scales is often a first step in an analysis. Give an approximate value for the thickness of a lipid bilayer and the linear length of a helical turn of a DNA double helix. A technician wants to amplify DNA from a patient sample. However, the lab is not equipped with a thermocycler. (i) (ii) Name two methods for DNA amplification that can be operated at constant temperature and give their acronyms. Explain these two methods in detail using a schematic and name all necessary components that are required to perform the amplification. Describe the main function of the middle ear. Highlight the role of the ossicles and the tympanic membrane.

"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.

Golden Line:Rationale: (Tell me why the authors put this diagram here. What do you think is its main purpose for being in our textbook?)Personal Connection:Question: