Neurons Dendrites Signalling Direction Axon (Diameter 1-20m Length 1mm-20m Cell Body Terminal Branches of Axon

Q: The inside negative membrane potential is a force that helps support... a.) the movement of…

A: *Membrane potential forces ions to move passively in one direction. *positive ions are attracted by…

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: Describe the basic composition and structure of the plasma membrane. Discuss the…

A: Introduction: The cell is regarded as the fundamental unit of life as all tissues, and any organized…

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: Membrane lipids can move laterally with relative ease, but flip-flopping between layers takes much…

A: Membrane lipids are the compounds that form the bilayered surface of cell. They are called lipid…

Q: What would happen in each of the following cases where something related to intracellular transport…

A: Signal sequences are attached to a newly formed protein . It provides an address to transport them…

Q: There are several membrane-bound organelles in cells (e.g. nuclei, mitochondria, endoplasmic…

A: Ion channels are the imtegral membrane proteins that span the  whole length of the plasma membrane.…

Q: Please answer both questions:  1) The sodium-potassium pump: a) equalizes the charge distribution…

A: Neurons are the basic unit of the nervous system and are responsible for transmitting information to…

Q: Describe the role of proteins in the movement ofmolecules across a membrane.

A: Channel proteins kind hydrophilic pores across the macromolecule bilayer.

Q: Which of the following statements about neurotransm O Neurotransmitters derived from amino acids…

A: Neurotransmitters are chemical messengers that send a signal from a neuron to a target cell, which…

Q: List the types of junctions found in animal cells, and state a function for each.

A: Animal cells have special parts called cell junctions that help cells adhere together and talk to…

Q: Which of the following statements related to intercellular junctions is false? O Cadherins are…

A: Cell junctions, also known as intercellular bridges or junctional complexes, are a group of cellular…

Q: Which of the following is ther eason why the potassium leaves the cell readily at the peak of the…

A: The electrical potential across the neural membrane when the neuron is at rest i.e unstimulated…

Q: How can ATP synthase be used to generate a membrane potential?

A: ATP synthase consists of two factors- the F1 a soluble portion situated in the mitochondrial matrix,…

Q: When we discuss the "physiological concentrations of Na* and K+", what actually sets these…

A: Active Transport: Active transport is a type of cellular transport mechanism in which cells move…

Q: Typically, there is an ion gradient between the cytoplasm and the interior of synaptic vesicles. The…

A: Neurotransmitters are the chemicals that are secreted by "nerve cells" or neurons to carry the…

Q: Compare and contrast the structure and function of the three major types of membrane junctions.

A: Epithelium occurs on the external and internal exposed surfaces of the body parts and for a…

Q: Explain the Structures of activators?

A: Activator;- are modular proteins contains a single DNA binding domain  and one are few activation…

Q: What is the correct rank the following molecules in regards to membrane permeability from MOST (1)…

A: Permeability is a fundamental property of the cell membrane which is essential for the maintenance…

Q: For each type of membrane transport, know the following: – Is a transporter protein required? If so,…

A: The plasma membrane is the selective barrier that separates and protects the inner cellular contents…

Q: This graph shows the electrical charges of the cytosol at one spot along an axon or muscle cell. a)…

A: * The three stages in membrane potential are  Depolarisation  Repolarisation Hyperpolarisation *…

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: Compare the structure and function of tight junctions, desmosomes, and gapjunctions.

A: The cells present in the tissues of all vertebrate organisms are connected to each other via complex…

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: In general, what is the relationship between membrane fluidity and membrane permeability?

A: The protective plasma membrane, sometimes also known as the cell membrane, has a bilayer of lipids,…

Q: What key ATPase is important for maintaining this positive (outside) and negative (inside)…

A: Transmembrane potential, also known as membrane potential, refers to the electrical potential…