Therefore, a muscle cell at rest is said to be __________________ and has membrane potential.

Q: Which of the following families of actin-binding proteins promote actin filament polymerization?…

A: Actin filaments are made up of a long spiral chain of similar actin proteins. Actin filaments, like…

Q: When a neurotransmitter-filled vesicle is in the primed position, which t-SNARE connect is critical…

A: Synapses are structures or junctions that facilitate the passing of an electrical or a chemical…

Q: What is not a similarity between motility of cilia/flagella and skeletal muscle? Group of answer…

A: In most flagella and motile cilia, there are 9 pairs of microtubules arranged in a circle, along…

Q: 1) whether the statement is correct or incorrect and 2) the reasoning for your answer. Your answer…

A: Transport proteins are the proteins present in the membrane which allows the passage of only…

Q: What would be the consequences of actin filament assembly/disassembly if a mutation prevented actins…

A: Actin belongs to the globular family of proteins that forms microfilaments present in eukaryotic…

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 a typical action potential, the membrane potential of the neuron or muscle changes from_____…

A: Action potentials can be defined as the swift rise and succeeding fall in the membrane potential or…

Q: Analogs of hemidesmosomes are the focal contact sites, which are also sites where the cell attaches…

A: The epidermis is the outermost layer of the skin which is attached to the dermis by an extracellular…

Q: Which ion or ions are transported? This transporter requires ATP? (Y or N) This protein is…

A: Transportation of specific molecules or ions depends on their chemical properties and concentration…

Q: Which of the following is not an excitatory ligand-gated ion channel? NACHR AMPAR ASIC GABA-AR

A: Neurons send electrical signals by generating and transmitting action potentials. Neurons have…

Q: Action potential ente from adjacent cell. 1 Ca2+ 2 K* 3 Na* Ca2+ ЕCF ATP NCX ICF 3 Na* RyR Ca2+…

A: The muscle contraction of myocardial cells is activated with the help of specific stimulus that…

Q: you discover that myoglobin has an isoelectric point of 6.8 and chymotrypsin has an isoelectric…

A: Isoelectric point (pI) of a protein is the pH at which the net charge of the protein is 0. When pH…

Q: Chloride ions (Cl-) are in higher concentration outside of the cell compared to the intracellular…

A: Ion channels across the membrane allow the movement of specific ions in the cell and outside. This…

Q: What membrane process releases neurotransmitters into the synapse during an action potential O…

A: During an action potential, the vesicles containing neurotransmitters migrate toward the presynaptic…

Q: Explain the mechanism of action of the Na+/K+ pump. If these pumps became non-functional due to a…

A: Jens Christian Skou, a Danish physicist who won the Nobel Prize in 1997 for his work on the…

Q: List the steps of collagen assembly and include the location of each step

A: Collagen is the most abundant protein in the body. It has significant role in blood clotting,…

Q: The specialized post-synaptic portion of a neuromuscular junction is called a pick one: motor…

A: Individual motor units, each of which contains a single motor neuron and all the muscle fibers it…

Q: If Ec=-70mV, and the membrane depolarises slightly to -60mV, how will Cl behave? O It will leak into…

A: Membrane depolarization refers to the process by which the membrane potential of a cell becomes less…

Q: This question uses the same experimental setup as in Question 1 and the same modification of the…

A: The objective of the question is to understand the movement of sodium ions (Na+) when the membrane…

Q: "Tight junctions perform two distinct functions: they seal the space between cells to restrict…

A: Two neighbouring cells that come together to form a barrier are said to have tight junctions.…

Q: Of the following cell membrane lipids, which one prefers to reside in the INNER leaflet (or inner…

A: Phospholipids are lipid molecules constituting the cell membrane and are made up of two fatty acids…

Q: Binding sites on actin open when

A: The sarcomere is the part of the sarcostyle that is present between the two Z lines. It is the…

Q: In cells, actin filaments form bundles or networks. How do cells form such structures, and what…

A: The soft tissue-like structure found in the majority of the animals including human beings is known…

Q: Which of the following actin crosslinking proteins organizes actin microfilaments in parallel files?…

A: Introduction  Actin strands are linked or crosslinked together by proteins called actin crosslinking…

Q: T[K*] 3Na* 3Nat 3Na* Aldo Kir4.1-5.1 2K- 2K+ 2K+ Depolarization of membrane ► 1[CH] »1[CH] MR…

A: Introduction:-  the distal convoluted tubule is a part of the kidney the kidney is filtering out…

Q: Describe the flow of ions in these cells in action potentials - skeletal muscle - neuron

A: The nervous system establishes its function by means of neurons or nerve cells that aid in the…

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: n all human cells, there is a higher concentration of calcium ions outside of the cell than on the…

A: Various pumps in the body act to maintain cell signaling and communication. These pumps are…

Q: Calcium plays a role in ____ because it allows the interaction between the plasma and vesicle…

A: Neurons are the basic structural and functional unit of the nervous system. Neurons have three…

Q: Rigor mortis (the stiffening of muscles fibers several hours after death) is directly due to the…

A: Rigor Mortis  It is one of the recognisable signs of death, caused by chemical changes in the…

Q: What is meant by the term "Critical concentration" with respect to actin filaments?

A: The microfilament or actin filament is made up of monomeric globular actin protein or G-actin. Actin…

Q: How would you define the term "membrane potential." The ability of a cell to perform its specialized…

A: The plasma membrane is the membrane that separates the cytoplasm or interior of the cell from the…

Q: Which of the following CORRECTLY describes a similarity when comparing actin filaments and…

A: The cell exhibits the cytoskeleton, which helps to provide a framework of the cell. They help to…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.