1. What happens to synaptic transmission during an experiment if the preparation (containing 1 amotor neuron and 1 skeletal muscle) is bathed in a low calcium solution?
Q: The triplet code allows many amino acids to be specified by more than one codon. Such a code is said…
A: Introduction Amino acids are the building blocks of proteins. The building blocks of life are amino…
Q: Sometimes physical elements can prevent several of the individual composing an original population…
A: Species is a group of individuals that can breed together. They can't mate with individuals of other…
Q: Below is a nucleotide base pair from B-DNA with three different regions indicated by A, B, and C. B…
A: B Major groove , Hoogsten edge
Q: Explain how ecosystem modeling is useful in addressing ecological problems give an example to suport…
A: There are many ecological problems such as Pollution Global warming Overpopulation Power…
Q: Which of the following glands has both endocrine and exocrine functions? Group of answer choices…
A: Endocrine glands are the ductless glands. They produce chemical messengers called hormones that…
Q: Explain how ecosystem modeling is useful in addressing ecological problems give an example to suport…
A: There are many ecological problems such as Pollution Global warming Overpopulation Power…
Q: Which lobe of the cerebral cortex is responsible for auditory perception, speech, and complex visual…
A: There are mainly four lobes in the cerebral cortex that are the frontal lobe, parietal lobe,…
Q: A bacterial species X is inoculated in a screw capped test tube containing the broth media and…
A: The aerotolerant Species are those which can actually survive without oxygen. These are however, not…
Q: contains
A: The topmost layer of the dermis called the dermal papillae forms the small projections into the…
Q: What stimulates the release of PTH from the parathyroid gland? Group of answer choices calcitonin…
A: PTH (parathyroid hormone) is released from the chief cells of parathyroid gland. Parathyroid glands…
Q: In 1973, biologist Theodosius Dobzhansky wrote an essay titled "Nothing in Biology Makes Sense…
A: In biology, evolution is the change in the characteristics of a species over several generations and…
Q: 21. What characteristic of foraminifera would NOT favor their survival after a mass extinction…
A: the correct option is (d) slow maturation .
Q: What is the difference between systems and reductionist approach in ecology?
A: Ecology is the study of relationship between the organism /animals and the environment in which…
Q: An island of the Galápagos archipelago is home to a medium ground finch that subsists mainly by…
A: The theory of the inheritance of acquired characteristics proposed by French naturalist…
Q: Explain how the electron transport chain in cellular respiration works.
A: The electron transport chain is a progression of four protein complex which makes an electrochemical…
Q: Stratigraphy is the main way to understand temporal change at an archaeological site. Question 19…
A: An ecosystem is any geographic area in which plants and animals interact with their environment and…
Q: Match the following events in the recombinant DNA and cloning process Prompts gene of interest and…
A: DNA cloning DNA cloning or gene cloning is a method by which multiple copies of the desired gene of…
Q: 43. In the process of regulating body temperature, which part of the feedback system includes the…
A: ANSWER;-Effectors Explain;- Stimulus is the rise or fall of normal body temperature. Receptor cells…
Q: 5. A light year is approximately 9.46 x 1012 kilometres. Calculate in light years, the approximate…
A: A genome is a full set of genetic material found in an organism. Deoxyribonucleic acid (DNA) is a…
Q: hat is the consequences of RNA interference and what is the primary usefulness of this technique for…
A: RNA interference also known as Post transcriptional gene silencing is a type of conserved biological…
Q: What are the parts and function of the digestive system of a turtle
A: Turtles These are reptiles that belong to the order of Testudines. These reptiles have a shell…
Q: ck the following ver as a negative H 0 Part A FADH₂ → FAD Express your answer using one decimal…
A: Metabolic processes are of two types- anabolic process and catabolic process. Anabolic process…
Q: Ο Ο Ο Ο ο ο ο ο ο ο ο ο ο ο Ο ο ο ο ο ο Ο Ο production Primary Sea food and wild rice Spiritual…
A: A bubble of life formed by the the organisms, the environment, the landscape and the weather…
Q: explain how beta and gamma radiation can be used to produce diagnostic images.
A: Different types of radiations are used in the medical field in order to diagnose several diseases.…
Q: The datum point is a point within the archaeological site that serves as reference to locate the…
A: Introduction When processing a material or measuring the dimensions of a target, a datum is a plane,…
Q: 1. Use a simple diagram to explain how presynaptic inhibition works.
A: Introduction A single neuron, or nerve cell, has the ability to sustain a resting potential (a…
Q: Dendrochronology or tree-ring dating is an absolute dating method based on counting annual growth…
A: Dendrochronology method was used first time by Andrew Ellicot Douglas and Clark Wissler in 1920.…
Q: Can you provide more
A: Aerated composting Composting is defined as a process in which the dead organic matter is converted…
Q: Task Nº1. The disease is described in which the activity of phosphofructokinase of adipose tissue…
A: Phosphofructokinase is an important enzyme of the glycolysis. It catalyzes the ATP-dependent…
Q: 1. How do we know that there are vesicles filled with neurotransmitters at the neuromuscular…
A: The chemical messengers of the body are typically referred to as neurotransmitters. They are the…
Q: What are the functions of chlorophyll and the photosystems?
A: Chlorophyll is a lipid soluble green colored pigment which is present in oxygenic photosynthetic…
Q: List two specific examples of DNA damage and what causes it
A: Oxidative Damage Reactive oxygen species produced during cellular respiration have potential to…
Q: Meiosis is called reduction division. Explain why and where the reduction occurs and how this…
A: According to bartleby's guideline, I can provide only one question's answer. Kindly post the…
Q: Which bone is found in the upper limb? Group of answer choices radius sacrum patella fibula
A: The skeletal system consists of bones. It provides structure and shape to the body.
Q: 1.Discuss how the term sustainable development emerged? 2. Discuss Kyoto Protocol (1997) vs. Paris…
A: Global warming is the major environmental issue in which the earth's temperature rises at an…
Q: What is the main goal of lactic fermentation in humans especially during strenuous activity? a.…
A: Lactic acid fermentation is an anaerobic respiration that primarily occurs in the skeletal muscles…
Q: Write a sentence that briefly identifies the problem being investigated. D
A: Scientific investigation is the process of using different controls, conditions and variables to…
Q: a specimen from an infected wound has been submitted to the clinical laboratory. Explain in detail…
A: Mostly Staphylococcus aureus causes the infected wound infection but sometimes other bacteria ?…
Q: What metabolic nucleotides necessary for oxidation? Check all that apply. O NADH O coenzyme Q O NAD¹…
A: When Fatty acid molecule is broke down to generate acetyl - CoA then it is called as beta oxidation.…
Q: Which phytochemical antioxidant makes fruit red? Beta-carotene O Lignans Lycopene Monoterpenes O O
A: Introduction Carotenoids are a collection of phytochemicals that are liable for the yellow, orange,…
Q: What kind of chromosomal mutations is/are produced by unequal crossing over?
A: Chromosome mutations are changes that arise in chromosomes as a result of nuclear division mistakes…
Q: The following results were obtained for the experiment: FLASK # LIGHT EXPOSURE OXYGEN GAS PRODUCED…
A: Photosynthesis is the process by which plant cells convert carbon dioxide and water into glucose and…
Q: What fundamental structure organization allows both chloroplasts and mitochondria to establish a…
A: Chloroplast is responsible for photosynthesis. Whereas mitochondria is responsible for respiration.…
Q: What is the reason that the Taq polymerase is currently used? A the Taq polymerase is one of the…
A: Taq polymerase is obtained from a thermophilic (those organisms which can survive in very high…
Q: Did the results of this experiment agree or disagree with your original hypothesis Explain your…
A: I agree with the result of this experiment. In the photosynthesis process, maximum absorbing light…
Q: 35. What blood vessel carries oxygenated blood away from the heart? Group of answer choices vein…
A: ANSWER;-artery Explain;- Courses divert oxygenated blood from the heart (with the exception of the…
Q: 5. A light year is approximately 9.46 x 1012 kilometres. Calculate in light years, the approximate…
A: A genome is a full set of genetic material found in an organism. Deoxyribonucleic acid (DNA) is a…
Q: Explain why does sleep loss increase after-dinner energy intake and reduced insulin sensitivity?…
A: Sleep is a physiologic state where the human body exhibits reduced metabolism, and the body goes…
Q: M a. Draw the structure of the acentromeric chromosome using a line and letters to designate loci in…
A: Inversion is one type of chromosome aberration where the chromosome segment is excised and…
Q: HOW MANY YEARS AGO DID THE DINOSAURS BECOME EXTINCT?
A: ANSWER) Dinosaurs become extinct about 65 million years ago.
Step by step
Solved in 2 steps
- What happens to synaptic transmission during an experiment if the preparation (containing 1 αmotor neuron and 1 skeletal muscle) is bathed in a low calcium solution?5 A Which of the following choices correctly fills in the blanks? After repolarization, the sodium ions are found neuron. This reversal of ions can be fixed by the action of E potassium ions are brought in. Select one: outside b. A A inside Oc Od. A outside A inside В inside B outside B inside B outside voltage gated channels two C D C D C D Na/K* exchange pump two Na/K* exchange pump three two the neuron and the potassium ions are found B of the D sodium ions are taken out and D E three E E three E voltage gated channels three twoWhich of the following voltages would most likely be measured during the relative refractory period? +30 mV 0 mV -45 mV -80 mv
- My question is Can you describe 2 examples from the scientific literature of structural synaptic plasticity?1.show that the Mcculloch_Pitts formal model of a neuron may be approximated by a sigmoidal neuron(I. ا, neuron using a sigmoid activation function with large synaptic weights 2.Show that a linear neuron may be approximated by a sigmoidal neuron with small synaptic weights.Patch clamp recording of a single ion channel yields the following results: Holding Potential (mV) Measured Current (pA) -100 -1.0 -50 0.0 0 +1.0 +50 +2.0 +100 +3.0 part a.) Calculate the membrane potential at the instant when a neuron has the following relative permeabilities: PK+ = 1.0, PNa+ = 1.0, PCl- = 1.0. Use the ionic concentration values in the picture included. a.) -12 mv b.) -35mv c.) -60 mv d.) +20 mv e.) 0 mv part b.) What would be the equilibrium potential for K+ in neurons under such circumstances? a.) -11 mv b.) +30 mv c.) +75 mv d.) -35 mv e.) 0 mv part c.) What would be the new resting potential, discounting the effects of non-gated chloride channels (just give an approximate value – no calculation is necessary)? a.) about +20 to +25 mV b.) about -30 to -40 mV c.) about +1 to +5 mV d.) close to ENa+ e.) about -10 to -15 mV
- Draw the current that you would expect to flow during a voltage clamp experiment on a typical neuron. Voltages and time course are shown. Briefly explain why the currents are inward or outward. Be sure to provide scale bars. You should definitely label the Y axis so that the peak current value is obvious. Draw the Na+ current you would expect if there were physiological ionic gradients. Draw the K+ current you would expect if there are physiological ionic gradients. Draw the K+ current you would expect if the bath solution and the intracellular solution are both 125 mM.Myasthenia gravis is a disease that leads to a marked decrease in the number of acetylcholine (Ach) receptors at the neuromuscular junction. As a result, suppose only about 200 (instead of 2000) Ach receptor-channels are opened by each quantum of Ach. The Ach-gated channels that survive operate normally and each cause a depolarization of about 0.25 x 10-3 mV when open. The function of the presynaptic terminal is normal and an action potential will cause the release of 100 quanta of neurotransmitter. For a patient with myasthenia gravis, what would be the magnitude of the depolarization (in mV) associated with opening of one Ach-gated channel? a.) 0.25x10^-2 mv b.) 0.25x10^-3 mv c.) 0.25x10^-4 mv d.) 0.5x10^-1 mv e.) 0.5 mvMyasthenia gravis is a disease that leads to a marked decrease in the number of acetylcholine (Ach) receptors at the neuromuscular junction. As a result, suppose only about 200 (instead of 2000) Ach receptor-channels are opened by each quantum of Ach. The Ach-gated channels that survive operate normally and each cause a depolarization of about 0.25 x 10-3 mV when open. The function of the presynaptic terminal is normal and an action potential will cause the release of 100 quanta of neurotransmitter. Part a.) For a patient with myasthenia gravis, what would be the size (in mV) of a miniature excitatory post-synaptic potential (or that associated with one quantum of Ach)? a.) 0.05 mv b.) 0.25x10-4 mv c.) 0.25x10-3 mv d.) 0.5x10-3 mv e.) 0.5 mv Part b.) For a patient with myasthenia gravis, what would be the size (in mV) of the full excitatory post synaptic potential consequent to the entry of an action potential into the presynaptic terminal of the neuromuscular junction? a.) 70 mv…
- 1. Shown below are figures of the closed and open structures of the voltage gated potassium channel protein in the cell membrane of a neuronal cell. Extracellular CLOSED Extracellular OPEN Cytosol Region A Cytosol Region A Region A of the channel protein functions as a paddle. The paddles move up and down, opening and closing the central pore through which potassium ions flow. The resting membrane potential of a neuronal cell is -70mV. Action potential +40 a. The action potential graph is shown on the right, at what point in the graph or when would voltage gated potassium channels be closed and when would they be open? Choose from Resting, depolarization, repolarization or refractory period. Describe briefly. Threshold -55 Failed initiations Resting state -70 Stimulus 1 Refractory period b. Would potassium ions move in or out of the cell when the voltage gated potassium channels are open? 1 Time (ms) What kind/type of amino acids would be present in region A of the voltage gated…Given the steps shown below, which of the following is the correct sequence for transmission at a chemical synapse? 1. neurotransmitter binds with receptor 2. sodium ions rush into neuron's cytoplasm 3. action potential depolarizes the presynaptic membrane 4. ion channel opens to allow particular ion to enter cell 5. synaptic vesicles release neurotransmitter into the synaptic cleft O 1, 2, 3, 4, 5 O 5, 1, 2, 4, 3 O 2, 3, 5, 4, 1 O4, 3, 1, 2, 5 O 3, 2, 5, 1, 419. Identify the two major types of channels that open and close during an action potential in a neuron (see images below). the voltage-gated Na* channel and the voltage-gated K*channel 20. What stimulates the two channels above to open?