Although purified actin can assemble reversibly in vitro, various actin-binding proteins regulate the assembly of actin filaments in the cell. Predict the effect on a cell’s actin cytoskeleton if function-blocking antibodies against each of the following were independently microinjected into cells: profilin, thymosin-β4, CapZ, and the Arp2/3 complex.

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: the most widely distributed plasma-membrane effector protein in cells is adenylyl cyclase true or…

A: Introduction: Adenosine triphosphate (ATP) is transformed by adenylate cyclase (AC) into…

Q: In covid-19 myocarditis happened, and endothelial cell is in charge of inhibiting the inflammation,…

A: Coronaviruses are a huge own circle of relatives of a positive-stranded, enveloped RNA viruses that…

Q: Enumerate SRP binding molecules and indicate the function elicited by each binding AND Explain the…

A: Signal sequence  - slowing of protein synthesis ( elongation arrest ) :…

Q: Define Dynamic instability depends on the presenceor absence of a GTP-β-tubulin cap.

A: Microtubules are made up of protein tubulins that can undergo quick growth or dissolution by…

Q: will happen if Sec23/24 has a mutation that stops it from attaching to cargo receptors? Consider how…

A: Coat protein complex2 consists of various proteins which are essential for cargo export from the…

Q: Receptor tyrosine kinases such as the epidermal growth factor (EGF) receptor can basically be broken…

A: Receptor tyrosine kinases (RTKs) are a group of membrane-bound receptors that act as signal…

Q: If the RGD tripeptide sequence in fibronevtin wete absent. Which is true?   integrims would not…

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

Q: Synaptic transmission requires a vast number of molecular interactions taking place on both ends of…

A: Pre-synaptic events:- These are the events which occurs in neurons which are sending…

Q: How does the ras path trigger the initiation of a new branch off an existing actin filament –…

A: Actin (thin filament) and myosin are examples of contractile proteins (thick filament). Troponin…

Q: Given the existence of leak channels for both K  and Na , could the membrane repolarize C688 if the…

A: Ion use transport protein known as gated or leak channels to enter the cell. It is known as…

Q: Based on these data, which of the following proteins (biotin, hygromycin, and streptavidin) can rule…

A:

Q: Describe the steps of neurotransmitter release involving the proteins v-snare and t-snare.

A: SNARE proteins are a huge protein family comprising of 24 members in yeasts and in excess of 60…

Q: Calculate the resting membrane potential of a cell when gCl = 0, gK = 0.6 and gNa = 0.4. Assume that…

A: Goldman equation  is a formula used to calculate the binding energy of an atom. The Goldman equation…

Q: Researchers discovered that specific t-SNARES, v-SNAREs, and Rabs are localized to the area where…

A: Fusion of transport vesicles with its target involves two major steps. First, the transport…

Q: 7. A) What effect does the compound GppNHp, when applied to the inside of a cell during whole cell…

A: A. The compound GppNHp is applied to the inside of a cell during while cell patch clamp recording.…

Q: Describe the mechanism by which endoplasmic reticulum vesicles fuse with the Golgi apparatus, with…

A: Vesicular transport takes place with the fusion of a vesicle with its target membrane to form a…

Q: Cell adhesion molecules (CAMs) can form cis and trans interactions with other CAM molecules. True or…

A: The cell is the basic structural and functional unit of our body. It carries out many functions in…

Q: For each of the following sentences, fill in the blanks with the best word or phrase selected from…

A: The cytoskeleton is extended throughout the cytoplasm of the cell. It is a complex network of three…

Q: First, you apply a signaling ligand known to activate this Gs protein and track yellow fluorescence.…

A: G protein coupled receptors are the cell surface receptors and transmit signals to their…

Q: Based on Figure 9-24, can you predict the position of amutation that would produce an active protein…

A: All the proteins synthesized by the membrane bound ribosome reside in the lumen of endoplasmic…

Q: Give typing answer with explanation and conclusion

A: The Insulin Receptor (INSR) is a crucial protein responsible for regulating glucose levels in the…

Q: To improve the efficiency of axonal transport, bundles of similar proteins are packaged and…

A: Neurons or nerve cells are the structural functional units of the nervous system. It is composed…

Q: Name and define (briefly) the four different types of receptors involved in Cell signaling. Give an…

A: Answer.  The four different types of receptors involved in Cell signaling are: 1. G-protein coupled…

Q: Define anterograde axoplasmic transport. Why is this type of axonal transport necessary in most…

A: Introduction :- The transportation of mitochondria, lipids, synaptic vesicles, proteins, and other…

Q: Most mammalian cells have a single immobile cilium called the primary cilium, in which…

A: Intraflagellar transport (IFT) is the process by which proteins are transported into cilia. It…

Q: How ion channels will specifically target the cancer cell and not the normal cells or the cells…

A: Apoptosis also known as organized cell death is a mechanism through which a cell, which is no longer…

Q: create a simple flowchart depicting the MC1R pathway

A: MC1R is a G protein-coupled receptor.

Q: Describe the two phenomena that give rise to the diversity of adhesion molecules such as cadherins.…

A: Introduction:- Animal cells use integrins as their primary receptors for binding to the…

Q: Under what conditions does the CAP protein become a functional activating protein?  Group of answer…

A: Lacoperon is a type of  operon, when primary energy source glucose is not available these bacterial…

Q: hagocytosis of a bacterial cell by a macrophage, involves extensive remodeling of the actin…

A: The cytoskeleton is a network of protein fibers responsible for cell shape, and movement of the…

Q: What would most likely occur to nuclear-cytoplasmic shuttling if the intrinsic GTPase activity of…

A: RAN is ras associated nuclear protein which is GTPase, a regulator of cell cycle. Ran is important…

Q: Acetylcholine acts to contract skeletal muscles, relax heart muscles to slow beating, and release…

A: Acetylcholine is the main neurotransmitter of both sympathetic and parasympathetic preganglionic…

Q: You have made several mutations in the coding region of the gene coding for the sodium channel and…

A: mutation is a permanent change in the DNA sequence of a gene or a chromosome. This change can occur…

Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.