. channels in the plasma membraneopen or close in response to changes in theelectrical charge difference across themembrane

Q: hich of the following statements is true about actin: OActin is translated by free ribosomes O…

A: Actin is known as the thin filament. It is made up of the protein named actin.

Q: What is the free energy change for the transport of calcium ions (Ca++) across a membrane from a…

A: Ions are distributed on either side of the cell membrane. The transport of ions across the membrane…

Q: In this cartoon, imagine that Romeo is a potassium ion (K+) and Juliet is a sodium ion (Na+).…

A: The plasma membrane of the cell regulates the entry and exit of different molecules according to…

Q: What type of membrane is membrane X? semipermeable Why? Only water crosses What type of membrane is…

A: Permeable, selectively permeable, and semipermeable membranes are all types of membranes that allow…

Q: Discuss how integral membrane proteins affect and impact on membrane fludiity and dynamics.

A: Integral membrane proteins, which are proteins that are securely embedded in the hydrophobic lipid…

Q: Under which circumstance is the Goldman equation equivalent to the Nernst equation? O when the cell…

A: All living organisms are made up of cells. The cells are the basic structural and functional unit of…

Q: . A solute cannot move into a cell by crossing the phospholipid bilayer of the membrane. It can,…

A: If a Solute cannot move into a cell by crossing the phospholipid bilayer of the membrane.

Q: Active transport across membrane can be mediated by the following mechanisms:     “Uphill”…

A: Active transport across cell membrane is the movement of molecules from lower concentration to…

Q: Which of the following is a characteristic feature of a ion channel protein in a plasma membrane?…

A: The cell membrane is a structure which protects the cell and acts as a barrier and transports the…

Q: Other non-lipid-soluble molecules or ions, for which membranechannels are not present in the cell,…

A: The cell, which is the basic unit of all living organisms (both in terms of structure and function)…

Q: Draw a simple cell; indicate where the concentrations of Na1, K1, and Cl2 are high and low and the…

A: A cell is the basic structural and functional unit of all living organisms. An organism is termed as…

Q: TIM/TOM complexes are involved in transport of proteins ac O mitochondria O nucleus Endoplasmic…

A: Ans- Mitochondria

Q: The electrochemical gradient across membranes is important in determining movement across membranes…

A: The electrical potential difference arises due to the separation of charges across the membrane,…

Q: The distribution of water is determined by solute concentrations. A hypertonic solution would cause…

A: Dissolving a substance in water creates concentration. If we dissolve even more substance then we…

Q: The presence of trans fats in membranes membrane fluidity (increases or decreases) decrease…

A: cell membranes are made of phospholipid molecules , they have fatty acids attached with a phosphate…

Q: Which is not required for passive transport across a membrane (select all that apply and explain…

A: In a living cell, the cell membrane acts as a barrier for the cell with the outer atmosphere. It…

Q: Let's put both cells into Solution B. Because Solution B is hypertonic to the cytoplasms of the…

A: Osmosis is a process of diffusion, where there is a movement of molecules from a region of high…

Q: How do proton pumps contribute to membrane potential? Please explain in 3-8 sentences

A: Proton pumps are the proteins present in the plasma membrane and responsible for generating membrane…

Q: Determine the type of transport. Here are your options: Simple diffusion, facilitated diffusion,…

A: In biology, molecules and lipid particles are transported by some particular protein carrier or…

Q: In contrast to transporters and carriers, channels: O Are selective for the specific solutes (e.g.,…

A: Cell is separated from the external enviroment with the help of cell membrane. This cell membrane is…

Q: Discuss about Intercellular and intracellular interactions ofclassical cadherins in typical adherens…

A: The structures are made of complex proteins that provide the connection between two neighboring…

Q: Suppose calcium ion is maintained within an organelle at a concentration 1000 times greater than…

A: All living organisms are made up of cells which are the functional unit of life and arise from…

Q: Microtubules are important for transporting cargo in nerve cell axons, as diagrammed in Figure Q17-…

A: Introduction  The cytoskeleton mostly consists of microtubules. They are present in every eukaryotic…

Q: escribe two things that contribute to the resting membrane

A: Normal potential inside the cell is called resting membrane potential which is the potential before…

Q: Enzyme linked receptors: Function directly as enzymes or they are linked to enzymes O Are surface…

A: Enzymes are the biocatalyst that are responsible for enhancing the activation energy. These are…

Q: Are symporters and antiporters always involved in active transport? Can't both solutes move in the…

A: The cell uses active transport, that takes energy derived from ATP, to move molecules against the…

Q: Left Compartment                                        Right Compartment 7 grams of Z per liter…

A: Introduction In our cell plasma membrane acts as a barrier between inside and outside the cell.  The…

Q: Diffusion Facilitated Diffusion Active Transport Flows against the concentration gradient (low to…

A: Plants need water, organic nutrients, growth regulators, and mineral nutrients to grow which is…

Q: Explain carrier and channel-mediated transport.

A: Introduction: Passive transportation of substances occurs along the concentration gradient, and…

Q: Calculate the maximum ratio that can be achieved by the plasma membrane Na+-glucose symporter of an…

A: The greater the permeability of the plasma membrane for a given ion, the greater will be the…

Q: Extracellular space Protein channel Cell membrane Carrier proteins Intracellular space

A: The movement of molecules or ions of any substance from a region of their higher concentration to…

Q: Suppose calcium ion is maintained within an organelle at a concentration 1000 times greater than…

A: Given values: Temperature = 37°C = 273 + 37 = 310 K R = 8.314 J.K-1.mol-1 F = 96485 C.mol-1 z =…

Q: BRIEFLY DESCRIBE the difference between open channels and gatéś channels Ih the biological membranes…

A: Open channel and gate channels are types of transmembrane channel proteins that help to transport…

Q: The cytoplasm of a certain cell is composed of a solution that is 98% water, 2% solutes. Consider…

A: Introduction  Tonicity is a measure of the relative concentration of solutes dissolved in two…

Q: How is the cell membrane like a battery?

A: Cell membrane forms the outer most part of animal cells. It also limits the entry and exit of…

Q: Describe active transport across the plasma membrane marking note of concentration gradient Nd…

A: Cellular transport is a very important phenomena that occurs inside the cell because there are a lot…

Q: cell communication through plasma membrane What are the 4 types-of receptors and their downstream…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Match these cell transport mechanisms to their correct definitions: [ Choose ] Movement induced by…

A: The cell membrane is impermeable to hydrophilic and charged molecules. Therefore, there are…

Q: Which of the following statements about ion channels are true? all ion channels are selective for…

A: All ion channels are selective for only one species of ion:  False. While ion channels are…

Q: Calculate the free energy changes at 20°C for the transmembrane movement of Na* and K* ions using…

A: Ions are distributed on either side of the cell membrane. The movement of ions across the membrane…

Q: K+ Select] A Select] Na* ATP mary active transport is being shown by transporter Select] which uses…

A: Molecules are transported across the membrane in two ways passive or active transport. Passive…

Q: What is the resting membrane potential

A:

Q: Passive transport across the membrane mediated by a carrier—     would not be saturated by…

A: Membrane transport refers to the movement of ions, molecules, and other substances across the cell…