What adaptive advantage do synapses provide in nervoussystems (i.e., why isn’t the nervous system just a mesh of cellscytoplasmically connected through gap junctions)?
Q: Mitosis: a. Are the chromosomes at each pole during telophase identical to chromosomes in the origin...
A: Mitosis is a type of cell division that occurs in all the cells except sex cells. As a result of mi...
Q: QUESTION 27 Indicate which statements are true about the palisade mesophyll. Located below the lower...
A: Mesophyll Most dicots have 2 types of mesophyll: Palisade mesophyll Spongy mesophyll Monocot leave...
Q: Describe the consequences of nondisjunction during meiosis
A: Non-disjunction occurs when the chromosomes do not separate properly, leaving gametes with one exces...
Q: Exelain ? lobhot ib madulor ef INA, Porodeim ?
A: DNA, RNA, and protein are firmly related. DNA contains the data essential for encoding proteins, alt...
Q: Speciation
A:
Q: C E (a)
A: The given diagram above is the cross section of a bone showing its anatomy. The various parts of thi...
Q: 6. Anencephalics will not live for an appreciable period of time. The organs in their bodies are oft...
A: A newborn born with a brain that is undeveloped and a skull that is imperfect. ...
Q: 2. Compared to areas, cold du
A: Thermally activated vertebrates are indeed the majority of creatures that remain active in extreme c...
Q: What are transcription factors, and how do they influence development?
A: Gene expression includes transcription and translation.
Q: coffee addiction
A: coffee addiction called as Coffeeholic. that are also coffee lover .
Q: the basic structures forming the animal excretory and reproductive systems.
A: The circulatory system consists of three independent systems that work together: the heart (cardiova...
Q: . In some areas, the barrier built to prevent uncontrolled movement of people across the border betw...
A: *usually barriers shows effects on ecological impact.For every individual for survival it has to mov...
Q: 3. The enzyme glucose-6-phosphate dehydrogenase is presented in the human population by 2 variants t...
A: Descriptions of Protein polymorphism. Note: since your first question has two sub parts-a and b t...
Q: Match these two microtubules proteins with the types of cargo they transport: ER ...
A: Microtubule proteins involved in transportation of the specific cargos.
Q: Understand the importance and ethics of sharing personal information about disease
A: Sharing information about your disease condition is important in many ways: It helps to get better...
Q: Explain the significance and describe the features of fertilization and cleavage in early animal dev...
A: Animal embryonic development is also called as embryogenesis.
Q: What nucleic acid makes up this viral genome?
A: The viral life cycle can be divided into six major stages that are attachment, entry, uncoating, re...
Q: Match the following terms to their correct description: pupil, iris,lens, retina, and cornea. Transp...
A: On the ventral portion of brainbox and above both sides of nose their are two cavities or orbits cal...
Q: How many kilograms of feed are required per day to feed the 100 deer? b) Calculate the energy (in MJ...
A: Given Deer required 22MJ per day 1 kg wheat has 85% of dry mass and gives 12.5 MJ of energy. 1 kg...
Q: gases enter, travel, and exit the body of the fish.
A: Answer-
Q: What is the role of buffers in maintaining homeostasis? Group of answer choices maintains osmotic b...
A: 1. Buffers are chemical substances that helps in maintaining a relatively constant pH in a solution...
Q: The Na+-glucose transporters SGLT2 and SGLT1 are located at different levels of the kidney proximal ...
A: Introduction :- Kidney is the main organ of excretion and osmoregulation in vertebrates through whic...
Q: The Archaeal glycerol stoichiometry is different from the Bacteria and Eukarya. This may suggest tha...
A: The supergroups are thought to be monophyletic, which means that all organisms within each group are...
Q: Why sonoran desert has plants isn’t desert mostly sand? Then it can’t be desert and desert shouldn’t...
A: A desert is a barren area of land with little precipitation and, as a result, hostile living conditi...
Q: llowing c O formation of NADPH o happens in cytoplasm - results in nyruui
A: Metabolic pathways- A linked series of chemical reactions occurring within a cell constitutes the m...
Q: Which of the following represents cell(s) that is/are diploid
A: This question is based on cell ploidy and meiosis.
Q: Make a concept map with the following terms. Be sure to include appropriate linking words. Emall me ...
A:
Q: Eukaryotic genomes have many copies of genes H1, H2A, H2B, and H3, but some copies have accumulated ...
A: This question is based on mutations and genome.
Q: 1. In Archaea, what is the specific component that links the cell membrane fatty acids with glycerol...
A: Introduction Archaebacteria are Unicellular microorganisms in the domain, primitive bacteria microor...
Q: Hypothesize which embryo is from each of the following organisms:
A: The evidence for evolution is found at all levels of organization in living things and in the extinc...
Q: What are three examples of species of ctenophores?
A: Ctenophorans are commonly known as sea walnuts or comb jellies. Ctenophorans represent a small group...
Q: Is it acceptable to give a formal name to a microbe that hasn't been isolated and cultivated? What t...
A: There are two main microbiology methods used for isolating bacteria from a clinical sample in order ...
Q: Meiosis- a. Are the chromosomes at each pole during telophase 1 identical to chromosomes in the orig...
A: Meiosis is the type of cell division that reduces the number of chromosomes by half resulting in the...
Q: Which one of these cell types lacks a cell nucleus and therefore have no DNA? A) Glia cells B) Red b...
A: Glia cells are basically located in the peripheral and central nervous system. These cells are also ...
Q: sample scenario that may happen in Stimuli - Suppresion, and give Corrective/Preventive Measures
A: The simplest type of response is a direct one-to-one stimulus-response reaction. A change in the env...
Q: scribe the process of 'crossing over' detailing what stage of the cell cycle it occurs. What ect doe...
A: Meiosis is a kind of reduction division that takes place sufung gamete formation that is male and fe...
Q: Why are there multiple receptor subtypes for eachneurotransmitter? Why not a few receptors and lots ...
A: Introduction A molecule within or on the surface of a cell that attaches to a specific chemical and ...
Q: a) If individuals 1 and 2 marry, what is the probaE kidney disease? 4 Beuopb Pot
A: ANSWER;- From the pedigree, this is an autosomal latent disease because this disease skips generatio...
Q: Characterize or describe the epithelial tissues that make up the human body according to: a. Embry...
A: All layers and organs in the body are lined by a group of tissues called epithelial tissues which ar...
Q: Mutations to SRP72 (the RNA component of the signal recognition particle) are known to cause some fo...
A: The proteins are synthesized by two types of ribosomes that are membrane bound ribosome and free rib...
Q: What are the major sources of variations in the gene pool?
A: Gene pool is genetic diversity that is found in the population of species.
Q: How many viruses are adsorbed per cell (multiplicity of infection)
A: “Since you have asked multiple question, we will solve the first question for you. If you want any s...
Q: Research has shown that alcohol inhibits the release of antidiuretic hormone from the posterior lobe...
A: An alcoholic drink is one which comprises ethanol, a drug-like alcohol made from the fermenting of g...
Q: ugar compounds that bear significant negative charges. Which of the following mutations in the virus...
A: Sialic acid is a group of derivatives of neuraminic acid found in animal tissues and fluids as parts...
Q: Describe the process of 'crossing over' detailing at what stage of the cell cycle it occurs. What ef...
A: Introduction A parent cell divides into two or more daughter cells in the process of cell division. ...
Q: Describe the process of 'crossing over' detailing at what stage of the cell cycle it occurs. What ef...
A: Cell cycle is a process by which cell duplicates its genome, synthesises the other constituents of t...
Q: importance of adaptation as a mechanism for survival of a species.
A: Adaptation is an important factor that aids an organism to live properly in its surroundings . There...
Q: Referring to the pattern of inheritance of comb type and feathering in chicken, consider the cross b...
A: The pattern of inheritance of comb type and feathering in chicken. First we will acknowledge that co...
Q: REVIEW: How many clades are in Tree A (or B or C...they're the same tree)? HINT: Count the internal ...
A: Cladogram is a diagramatical representation of relationship between ancestor and organism.
Q: How significant are biogeochemical cycles to humans? How do human activities affect the biogeochemi...
A: Biogeochemical cycles recycle nutrients in the ecosystem. It involves both biotic ( living ) and abi...
What adaptive advantage do synapses provide in nervous
systems (i.e., why isn’t the nervous system just a mesh of cells
cytoplasmically connected through gap junctions)?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Fluorescent FM dyes partition reversibly into biological membranes without penetrating through them. Suppose that you have neurons cultured in a dish, and you incubate them with an FM dye for a period of time before washing the cells with excess medium to remove the dye. a) You find that if you stimulate the neurons to trigger action potentials during incubation with the dye, the synaptic regions of the neurons remain fluorescent after the wash. Propose an explanation for this effect. b) After you have generated fluorescent synaptic regions by this procedure, suppose that you trigger further action potentials while continuing to wash with excess medium. Would you expect the synaptic regions to lose fluorescence? Explain.Fluorescent FM dyes partition reversibly into biological membranes without penetrating through them. Suppose that you have neurons cultured in a dish. You incubate the neurons with an FM dye, and then you wash them with medium to remove the dye. You find that if the neurons are stimulated to trigger action potentials during incubation with the dye, the synaptic regions of the neurons remain fluorescent after the wash. Can you explain why this effect may have occurred? Also, after generating fluorescent synaptic regions by this procedure, suppose that you trigger additional action potentials while continuing to wash with medium. Would you expect the synaptic regions to lose fluorescence?The image attached below depicts a histological slice of human cerebral cortex tissue.Using knowledge of the central nervous system and various cell-cell interactions, identify thekey type(s) of cell junctions present in this image (for example, tight junctions, gap junctions, and adherens junctions/desmosomes). Briefly describe the function of these celljunctions. How would the function of the central nervous system be impaired if your above identified celljunctions were disrupted?
- In 1947, Donal Hebb took some rats home from his lab at McGill University. Hebb let these rats grow up and live in his kitchen, which was an enriched environment. What was the main morphological (physical) difference between neurons of the 'home' rats vs. the control rats in the laboratory? Larger somas and axons Bigger and longer action potentials More mitochondria in the cell body Greater dendritic branchingWhich statement is true regarding the neuron synapse? B) binging of a neurotransmitter on the postsynaptic neuron membrane can generate an action potential in that neuron C) the binding of a neurotransmitter always causes an excitatory effect on that cell, never inhibitory D) the presynaptic and pastsynaptic neuron membranes are not physically separatedSuppose that in a certain neuron, negatively charged protein molecules found in the intracellular compartment were suddenly able to diffuse through the cell membrane freely. What would be the result on this cell's resting membrane potential and action potential threshold? A) The resting potential would hyperpolarize and the action potential threshold would not change. B) The resting potential would depolarize and the action potential threshold would decrease. C) The resting potential would depolarize and the action potential threshold would not change. D) The resting potential would hyperpolarize and the action potential threshold would increase.
- Which of these is least likely to trigger an action potential in a post-synaptic cell? A)EPSPs and IPSPs arrive simultaneously at multiple synapses. B)The other choices are equally likely to trigger an action potential. C)Single EPSPs arrive simultaneously at multiple synapses. D)Multiple EPSPs arrive rapidly at a single synapse.Which of the following is the role of axonal Calcium (Ca2+) channels in neuronal communication at the synapse? a) they inhibit the action potential causing it to stop b) Calcium channels have no role in this process c) by allowing calcium to exit the cell, they promote the propagation of action potential across the synapse by creating depolarization d) by blocking calcium entrance, they mediate the contraction of presynaptic axon to facilitate movement e) when they open, calcium enters the presynaptic terminal, promoting fusion of neurotransmitter vesicles with presynaptic membrane, and release of neurotransmitters to the synaptic cleftRegardless of type, all neurons transfer signals between each other or to effectors (muscles or glands) at a synapse. The neuromuscular junction that we talked about with the muscular system is one example of a synapse. The diagram below shows the general features of a synapse Match each term or description with the appropriate letter in the diagram. You may use terms more than once. 1. Synaptic knob in axon terminal of pre-synaptic cell: 2. Synaptic cleft: 3. Neurotransmitter: 4. Dendrite of post-synaptic cell: 5. Cell body of post-synaptic cell: 6. Receptor in plasma membrane of post-synaptic cell: 7. Chemical released by neurons that stimulates or inhibits other neurons, muscles, or glands: 8. Cell that sends the signal: 9. Dendrite of cell that receives the signal: 10. Space between cells that must be crossed by neurotransmitters: 11. Structure that opens, like a "protein door", when neurotransmitters attach to it:
- Using your knowledge of the central nervous system and various cell-cell interactions, identify the key type(s) of cell junctions in the human cerebral cortex tissue. Briefly describe the function of these cell junctions. How would the function of the central nervous system be impaired if your above identified cell junctions were disrupted?What is the difference between a neuron and a glial cell in the nervous system?Multiple sclerosis is a demyelinating disease affecting the central nervous system. What type of cell would be the most likely target of this disease? Why? Which type of neuron, based on its shape, is best suited for relaying information directly from one neuron to another? Explain why. Sensory fibers, or pathways, are referred to as “afferent.” Motor fibers, or pathways, are referred to as “efferent.” What can you infer about the meaning of these two terms (afferent and efferent) in a structural or anatomical context?