Are these leading neural crest cells expressing membrane receptors orsecreting diffusible proteins that instruct the growing  neuron to extend its axon in the direction of the neural crest cell?

Q: Which of the following are the correct order of steps needed for guard cells to respond to ligth?…

A: Answer) The correct option is C. Light hits guard cells, guard cells actively pump protons out,…

Q: what role does involution play in patterning the nervous system and what experiments show that vg1…

A: Involution is the process of an organ diminishing or returning to its original size. Involution is…

Q: Estrogen works by binding to the ER. It includes two types ER alpha and ER beta and the two…

A: Estrogen receptors(ES) are the protein molecules present inside the cell. Their activation takes…

Q: What changes occur at the cellular level in response toresistance training?

A: Physical training is the set of activities that changes the appearance of skeletal muscles and…

Q: Which of the following is true about the hedgehog family  Hedgehog proteins are released from…

A: Hedgehog proteins are signaling molecules that play a crucial role in embryonic development. They…

Q: Which of the following signal transduction pathways is most commonly associated with the…

A: The binding of extracellular signaling molecules and ligands to receptors on the cell surface or…

Q: How do nonsteroidal antiinflammatory drugs (NSAIDS), such as aspirin reduce inflammation ? O They…

A: NSAIDs are a class of drugs that functions to reduce inflammation. It helps to prevent pain, blood…

Q: The ultimate goal of cortical rotation is... to move disheveled protein into place to maintain Veg1…

A: Cortical rotation changes the position of mRNAs and proteins. It is a microtubule mediated process.

Q: What are the main functional roles for Ca2+-signalling in neurons and how is the concentration of…

A: Calcium is an important intracellular messenger that regulates a plethora of neuronal processes such…

Q: What significance do BRCA1 and BRCA2 have in regard to developing cancer, and what types of cancer…

A: BRCA 1 & BRCA 2 are found pair in all the organisms where one gene is obtained from each of the…

Q: Describe the migration and fates of neural crest cells.

A: Neural crest cells are a temporary group of cells unique to vertebrates that arise from the…

Q: Match the characteristic with the correct species. Use the letters in the blanks to answer the…

A: * Volvox is a green algae belong tofamily Volvocaceae . *Spirogyra is a filamentous green algae with…

Q: A student wishes to carry out an investigation to determine the role of the drug CORA against MCF-7…

A: Cancer is a broad term used to describe various diseases in which abnormal cells divide and grow…

Q: Enumerate five (5) ways on how to track the routes of the neural crest cells.

A: Neural crest cells (NCC) are multipotent cells that are induced at the neural plate's edge and…

Q: Bird and Mammalian Development. How are they similar and how are they different. Know A-P, D-V and…

A: Mammals undergo holoblastic rotational cleavage, characterized by a slow rate of division, a unique…

Q: The normal function of one tumor-suppressor gene acting at the G1 checkpoint is to prevent cells…

A: The cell cycle consists of four steps- G1, S, G2, and M phases. In the G1 phase, the cell increases…

Q: You have learned that Shh is in part responsible for attracting commissural axons to the floor…

A: Neural patterning is the natural process by which cells in the formulating nervous system obtain…

Q: Describe intracellular receptors, using estrogen receptors as anexample

A: Most hormones flow in the blood, where virtually all cells come into contact. However, only a small…

Q: Cardiac myocytes, which of these downstream activities WOULD NOT occur when norepinephrine binds to…

A: Cardiac myocyte is the functional unit of the organ. The cell is delimited by a lipid membrane,…

Q: You are growing up myoblasts, C2C12 cells, to use in a myogenic study. You are using T-150 flasks…

A: You are growing up myoblasts, C2C12 cells, to use in a myogenic study. You are using T-150 flasks…

Q: Mutations in the EGF receptor can cause nonstop activation

A: Epidermal growth factor receptor is transmembrane receptor tyrosine kinase. It belongs to ErbB…

Q: state a location at which ACh has stimulatory effcets. where does it exert inhibiory effects? how…

A: Acetylcholine is a molecule that nerve cells in the brain, central nervous system, and other parts…

Q: In what way does the action of the membrane attack complexresemble the action of perforin?

A: The membrane attack complex can be described as an essential component of the innate immune effector…

Q: Consider the following simplified diagram of a signal transduction pathway that regulates…

A: Apoptosis, or programmed cell death, is a tightly controlled process that is essential for the…

Q: While it is obvious that the tadpole’s tail muscles and skin die, is this death murder or induced…

A: The insusceptible framework is an organization of natural cycles that shields a living being from…

Q: Why are rapidly growing cancers that originate in nervous tissue more likely to be composed of…

A: Cancer is a disease that occurs when a cell loses its control over proliferation. The cell keeps on…

Q: Expand on the sentence "both activation and inhibition are involved in embryonic development."…

A: Embryonic development is also named as embryogenesis . There are following steps . The embryonic…

Q: What is the structurethrough which the neuralimpulse is transmitted fromone cell to another? What…

A: Neural impulse is the electrical signal which results in the movement of ions in and out across the…

Q: Hello, please answer the following Physiology question correctly, and completely. Please answer both…

A: VEGF receptors are receptors for vascular endothelial growth factor (VEGF). These receptors play an…

Q: Why is there normally a latent period between the time ahormone binds to its receptor and the time…

A: Hormones are chemical messengers which are secreted by endocrine glands and transported through the…

Q: What is the role of Msx gene family in the development of the Neural crest and neural connectivity?

A: Msx proteins play a key role in craniofacial, limb, and nervous system development. In vitro and in…

Q: How is it that Wnt signaling is capable of mediating such diverse processes ascell division, cell…

A: Wnt signalling is a critical route in immune cell maintenance and renewal. It controls hematopoiesis…

Q: describe how the cellular response to EGF results in tissue repair (epidermal growth factor)

A: Epidermal growth factor is a protein that stimulates cell growth and differentiation by binding to…

Q: Relate the development of the PNS to the basic body segmental pattern of the outer tube of the human…

A: The parasympathetic nervous system is a vital division of the autonomous system of the human body.…

Q: Explain why stem cells supplied are needed in some tissues of the adult mammal to maintain tissue…

A: Stem cells are the most initial cells that have the ability to differentiate and give rise to all…

Q: When Sperry and colleagues ablated the dorsal RGCs, the remaining ventral RGCs projected to the…

A: The expression patterns of ephrins and Ephs suggest that the dorsoventral patterning of RGC…

Q: Design an experiment (with rationale) to determine whether a subset of neural cells are held…

A: N-cadherin is a significant grip atom engaged with the turn of events and pliancy of the sensory…

Q: List some tissues and organs in which changes in collagenous and elastic connective tissues…

A: Aging changes occur in all of the body's cells, tissues, and organs, and these changes affect the…

Q: Which of the following is NOT true when comparing epithelial and mesenchymal cells. A) Epithelial…

A: All the cells in human body are genetically identical except the gametes. This is true because all…

Q: A second hit might arise because of viral infection. Tumor-initiating viruses often target RB1 for…

A: A virus is a microscopic infectious agent that can only replicate inside the living cells of…

Q: Explain the mechanisms by which Shh induces ventral differentiation of the neural tube

A: Neural tube abnormalities lead babies to be born with brain, spine, or spinal cord problems.…

Q: What is in common between Epinephrine-secreting cells of the Adrenal Medulla gland and…

A: A neural crest is a collection of certain cells that develops at the edge of the neural plate…

Q: Describe how a signal is transmitted from the surface to the nucleus both generally (for any type of…

A: Signal transduction is a fundamental process in biology that allows cells to respond to their…

Q: Is the following statement True or False? During asymmetrical division of radial glial cells, Par3…

A: Stem cells are those cell which can differentiate to form other types of cells for example…

Q: how is sustained proliferative signaling necessarry for cancer development and how is it a driving…

A: Cancer is when abnormal cells divide in an uncontrolled way.  Abnormalities are generally due to…

Q: What are the 4 key signalling cues communicated within a cell to regulate cellular behaviour.

A: NOTE:- "As you have posted two questions under one, we will solve the first part for you, to get the…

Q: can you elaborate about why does it make sense that loss of PTEN would result in increased levels of…

A: PTEN remains the main negative regulator of the PI3K-Akt pathway.

Q: Normal p53 is a tumor suppressor gene, when mutated it loses this function. Explain how a tissue…

A: Cancer usually develops when a mutation in a gene results in the formation of a faulty protein that…

Q: In adult cells that have stopped dividing, what types ofrepair systems are possible?

A: DNA repair mechanisms remove the errors from DNA and maintain the integrity of the genetic…