What two major types of biological molecules compose the majority of the cell membrane in Model 2?

Phospholipids and membrane spanning proteins. More test answers on https://studyhippo.com/module-3-membrane-structure-and-function/

enveloped viruses have a layer of lipids surrounding their capsid. this envelope is made mostly of host cell membrane. in which step does the virus acquire this envelope?

release – during budding release, the virus “steals” some of the host membrane to use for itself More test answers on https://studyhippo.com/chapter-13-mastering-microbiology/

what are some general ways that growth factors are involved in cancer initiation on cell membranes?

increased growth factor, increased growth factor receptors, defective growth factor receptors, transducer mutations More test answers on https://studyhippo.com/oncogenes-6029/

Which of the following statements is true regarding the movement of substances across cell membranes

Ions are unable to move through the phospholipid bilayer because the nonpolar tail regions of the phospholipids are hydrophobic More test answers on https://studyhippo.com/bio-midterm-cells-and-cancer-multiple-choice/

Which class of hormone binds with specific receptors on the cell membrane?

Protein Hormones More test answers on https://studyhippo.com/exam-3-intro-to-endocrinology-hypothalamuspituitary-11362/

2. What part of the influenza virus must fuse with the host cell membrane to transfer the virus?

2. Envelope More test answers on https://studyhippo.com/micro-ass-6-renees-questions-1866/

Which type of virus would produce viral glycoproteins to be expressed on the host cell membrane?

Enveloped viruses More test answers on https://studyhippo.com/combo-with-mastering-microbiology-chapter-13-and-9-others/

Cell membrane (cytosol or outer membrane) what is their respective roles?

a. generation of H+ gradientb. reoxidation of NAD+ & FAD+ c. nutrient transport d. ion transport to maintain osmotic homeostasise. flagellum rotation More test answers on https://studyhippo.com/z-test-1-2983/

what is a unique component of fungal cell membranes that can be targeted with antifungals?

ergosterol, which can be inhibited via azoles and allylamines or directly damaged by polyenes, such as amphotericin B which bind to ergosterol and opens a pore in the membrane More test answers on https://studyhippo.com/antifungals-80202/

What is the function of the cell membrane?

Acts like a boundary for the cell More test answers on https://studyhippo.com/cell-transport-study-guide-l4/

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Cell Membrane Flashcards, test questions and answers

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What is Cell Membrane?

The cell membrane, often referred to as the plasma membrane, is a thin and flexible barrier that surrounds the entire surface of a cell. It is composed mainly of proteins and lipids, which form a double layer known as a phospholipid bilayer. The cell membrane functions as both a barrier and an interface between the inside of the cell and its external environment. It allows certain substances to enter or leave the cell while keeping out other substances.The lipid bilayer consists mainly of two types of molecules: phospholipids and cholesterol. Phospholipids are amphiphilic molecules; they have both hydrophilic (water-loving) heads and hydrophobic (water-fearing) tails. Cholesterol helps stabilize the structure of the membrane by inhibiting movement between phospholipids in different layers, which helps keep it impermeable to most solutes. Additionally, proteins embedded in this bilayer act as transporters for transporting specific molecules across the membrane or allowing communication between cells via receptor-ligand interactions. In addition to controlling what enters and exits the cell, the cell membrane also plays an important role in cellular metabolism by providing structural support for enzymes involved in metabolic pathways such as respiration or photosynthesis. It also serves as an attachment site for cytoskeletal elements like microtubules, which are involved in processes like endocytosis, exocytosis, intracellular transport, and motility within cells. In conclusion, the cell membrane is essential for maintaining homeostasis within cells by regulating what enters or exits them while also providing structural support for necessary metabolic pathways within them.