The structure pointed by the arrow is?

1. What does it suggest when the cell has a lot of intricate smooth endoplasmic reticulum?  2. How are polymers formed in stepwise manner?

3 ...|III5I I II 6. What factor will most likely increase the rate at which diffusion occurs across a cell's plasma membrane? small concentration gradient across the plasma membrane low temperature high concentration gradient across the plasma membrane large molecule size [ת א dé tv A Aa Pro

Choose the best answer 1) If the lipid bilayer in Section B represents the plasma membrane, which part of the protein is the cytoplasmic domain? There is no way to tell which is the cytoplasmic domain with the information given. Section A is the cytoplasmic domain since it contains disulfide bonds. Section C is the cytoplasmic domain since the N-terminus is always found in the cytoplasm. Section C is the cytoplasmic domain since glycosylation cannot occur on the cytoplasmic domain. Section B is the cytoplasmic domain since it is an alpha-helix.  2) Which type of amino acids is most commonly found in Section B? Hydrophilic Hydrophobic There is no way of knowing which type of amino acids is most commonly found in Section B with the given information Charged 3) If the lipid bilayer in Section B represents the ER membrane, which part of the protein is found INSIDE the ER (in the ER lumen)? The entire protein must be inside the lumen of the ER. Section C is inside the ER…

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Item17       Item 17 Which is a passive transport process? Multiple Choice   Phagocytosis   Pinocytosis   Receptor-mediated endocytosis   Osmosis   Ion pump Item18       Item 18 The type of vesicular transport by which large molecules or large amounts of substances are secreted from a cell is _________. Fill in the blank Fill in the blank   Item19       Item 19 Materials tend to move less rapidly when their concentrations are significantly different between two compartments. Group startsTrue or False   Item19       Item20       Item 20   As potassium diffuses down its concentration gradient, it moves out of the cell. However, this movement is resisted by the accumulating negative charge outside the cell.   Group startsTrue or False

1. What is the accepted model of the cell membrane? 2-3 The cell is composed to what two compounds? 4. A type of çell transport that reguire energy in the form form of ATP. - 5.A type of cell transport that requires exocytosis and endocytosis.-

1-What cell junction provides the strongest Mechanical force for holding cells together. 2-from shallow to deep,the junction structures between simple columnar epithelium are?

What are the functional significance of the asymmetry of a cell membrane?