drag the labels to their appropriate locations on the diagram of the neurons below. use targets of group 1 to indicate the components of neurons. use targets of group 2 to indicate the locations of gated ion channels.
Answers
Neurons are cells in chauge of synapsis. a)cell body / b)myelin sheath / c)synaptic terminal / d)axon hillock / e)nucleus / f)location of voltage-gated channels / g)location of ligans-gated channels / h)axon / i)dendrite
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Most neurons are composed of a cell body, dendrites that are cytoplasmic extensions that receive impulses from other cells, and an axon that is a long formation capable of conducting the electrochemical signals.
Neurons transmit nervous impulses.
Every neuron forms connections with other neurons. These connections are known as synapsis.
During synapsis, when a presynaptic neuron sends information, it releases neurotransmitters. This event is done through exocytosis.
The neurotransmitter is a molecule that travels through the synaptic space forward to the other neuron.
Once it reaches the target, it binds to its receptors in the postsynaptic membrane, causing ion channels to open.
This binding produces a depolarization of the cell called an excitatory postsynaptic potential.
Once the action potential is initiated, it spreads to the rest of the membrane, depolarizing it.
When the electrical stimulus is applied to the axon's membrane, it produces depolarization by activating the sodium voltage-dependent channels all along the axon.
Besides, there is an increase in sodium permeability.
Depolarization propagates to inactivated regions adjacent to the membrane opening more sodium channels.
The fiber diameter and the conduction velocity are closely related, exhibiting a directly proportional relationship. Mielinized fibers are thick, and their conduction velocities are very fast.
The conduction velocity sharply increases in myelinated fibers. This is because of the high concentrations of sodium channels in the Ranvier nodes that are not myelinated areas, and the diameter of the axon becomes thinner.
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Related Questions
How does your body respond to a decrease in blood glucose
Answers
Answer:
When blood sugar drops too low, the level of insulin declines and other cells in the pancreas release glucagon, which causes the liver to turn stored glycogen back into glucose and release it into the blood. This brings blood sugar levels back up to normal.
Explanation:
hope this helps!
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Answer:
Glucose is a sugar that comes from the foods we eat, and it's also formed and stored inside the body. It's the main source of energy for the cells of our body, and is carried to each cell through the bloodstream. Our brains depend on glucose to function, even when we're sleeping.
The blood glucose level is the amount of glucose in the blood. When these levels (also called blood sugar levels) drop too low, it's called hypoglycemia (pronounced: high-poe-gly-SEE-me-uh). Very low blood sugar levels can cause serious symptoms that need to be treated right away.
Low Blood Sugar Levels in Diabetes
People with diabetes can have low blood sugar levels because of the medicines they have to take to manage their diabetes. They may need a hormone called insulin or diabetes pills (or both) to help their bodies use the sugar in their blood.
These medicines help take the sugar out of the blood and get it into the body's cells, which makes the blood sugar level go down. But sometimes it's a tricky balancing act and blood sugar levels can get too low.
People with diabetes need to keep their blood sugars from getting too high or too low. Keeping blood sugar levels in a healthy range means balancing when and what they eat, and when they exercise with when they take medicines.
Hope this helps...;-]
Explanation:
How do organisms depend on and compete for biotic and abiotic factors?
Your answer should include at least 6 sentences to explain the claim, evidence and reasoning.
Answers
Answer:
Organisms depend on and compete for both biotic and abiotic factors in an ecosystem. A few abiotic factors are sunlight, water, and territory. Plants compete for sunlight and water, and they depend on those factors for their survival. Biotic factors would include plants, bacteria, and other animals. Consumers of these biotic factors compete for them because they depend on them for their survival.
Explanation:
;)
Which pair of traits is most likely to be inherited together?
A. purple eye and brown eye because they are both eye traits
B. aristaless and speck body because they have the greatest chance of crossing over
O
C. curved wing and arc (bent wings) because they have the least chance of crossing-over
D. black body and light eye because they are closest together on chromosome 2
Answers
Answer:
D
Explanation:
The closer together two genes are on a chromosome, the less likely their alleles will be separated by crossing-over.
FOR 100 BRAINLZY POINTS I NEED IT NOW What marks the transition between the Precambrian Eon and Phanerozoic Eon?
Question 3 options:
increased meteor impacts
a disappearance of most of the life in the fossil record
an increase in the number and diversity of life in the fossil record
the appearance of land plants in the fossil record
Answers
Answer:
Explanation:
Mesozoic Era, second of Earth’s three major geologic eras of Phanerozoic time. Its name is derived from the Greek term for “middle life.” The Mesozoic Era began 252.2 million years ago, following the conclusion of the Paleozoic Era, and ended 66 million years ago, at the dawn of the Cenozoic Era. (See the geologic time scale.) The major divisions of the Mesozoic Era are, from oldest to youngest, the Triassic Period, the Jurassic Period, and the Cretaceous Period. The ancestors of major plant and animal groups that exist today first appeared during the Mesozoic, but this era is best known as the time of the dinosaurs.
Answer:
oh that's my answer sorry belated answer
Looking at the aquatic food web below, where is energy starting in the food web
A. Seagull, penguin, and elephant seal
B. Phytoplankton and seaweed
C. Blue whale and killer whale
D. Crabs, krill, Fish
Answers
Answer:
Pretty sure it's B
Explanation:
If antenna length in Mendaliens is controlled by a single gene and long is dominant to short and two Mendaliens with Long antenna have some offspring with short antenna, what is the genotype of the Mendalien parents
Answers
there are multiple possibilities but one of them is that both parents are heterozygous dominant (one capital and one lowercase letter)
what role does the heart play in the circulatory system
Answers
it's a pump that sends blood throughout the body
Definition of “principle of dominance”
Answers
Which equation represents the photosynthesis process?
a
CO2 + Glucose ----> H2O + Sunlight + O2
b
CO2 + H2O + Sunlight ----> Glucose + O2
c
CO2 + H2O ----> Glucose + O2
d
Glucose ----> CO2 + Alcohol + ATP
Answers
Answer: B
Explanation:
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Can someone help me with my living earth homework
Answers
No
Use the graph below to explain the ideal conditions for the enzyme it represents.
Answers
Answer:
Explain the effect of temperature on the relative rate of action of an enzyme is represented in the graph below: b) What is the optimum temperature (approximate) for the action of this enzyme? 6 0 L } 10 20 30 40 50 60❤
The image shows a facility that converts the energy of moving water into
electrical energy. What is one advantage of using this technology in place of a
coal-burning power plant?
A. It produces more water pollution.
B. It causes no harm to ecosystems.
C. It does not emit greenhouse gases.
D. It is fueled by a nonrenewable resource.
Answers
Answer:
C. It does not emit greenhouse gases.
The one advantage of using this technology in a coal-burning power plant is that it does not emit greenhouse gases. Therefore, option C is correct.
How does electrical energy formed from moving water?Electrical energy can be generated from moving water through a process called hydroelectric power generation. Hydroelectric power plants use the kinetic energy of moving water to spin turbines, which in turn generate electricity.
Hydroelectric power generation is a renewable source of energy that produces no carbon emissions or air pollution. It is one of the most widely used forms of renewable energy, providing electricity to millions of people worldwide.
However, the construction of dams and reservoirs can have significant environmental impacts on the surrounding ecosystems and habitats. Hence, option C is correct.
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What is the difference between emphysema and asthma?
Emphysema is an inflammation of the lungs, while asthma is a bacterial infection of the lungs.
Emphysema is the gradual destruction of the alveoli, while asthma is a sensitivity to irritants that causes the airway to constrict.
Emphysema is a sensitivity to irritants that causes the airway to constrict, while asthma is the gradual destruction of the alveoli.
Emphysema is a bacterial infection of the lungs, while asthma is an inflammation of the lungs.
Answers
Answer:
Asthma and COPD are both chronic lung diseases. COPD is mainly due to damage caused by smoking, while asthma is due to an inflammatory reaction. COPD is a progressive disease, while allergic reactions of asthma can be reversible.With asthma, the swelling is often triggered by something you're allergic to, like pollen or mold, or by physical activity. COPD is the name given to a group of lung diseases that include emphysema and chronic bronchitis. Emphysema happens when the tiny sacs in your lungs (called alveoli) are damaged.
Explanation:
MARK ME AS A BRAINLIST PLZ
Answer:
I think the person above was trying to say the correct answer was
B. Emphysema is the gradual destruction of the alveoli, while asthma is a sensitivity to irritants that causes the airway to constrict.
If your gonna answer a brainly question don't make it complicated, respectfully, we have no time for that with these quizzes. And we more appriciate just straight to the point.
Which organisms "invented" (were the first to use) fermentation?
a
fungi
b
plants
c
bacteria
d
animals
Answers
Answer:
bacteria
Explanation:
because they are the one that still been in use
what is the difference between metameres and septa
Answers
Answer: External segments are called metameres and internally, septa, or dividing walls, are located between the segments.
Explanation: I think it is
i need help pls anyone know this ive been stuck for 10 mins so pls
Answers
Answer:
glucose and oxygen is the answer
what happened to the urine volume when the solute gradient in the interstitial space was increased?
Answers
The urine volume decreased when the solute gradient in the interstitial
space was increased.
The solute gradient in the interstitial space being increased means more
absorption of compounds into the bloodstream and vice versa. When this
occurs, the constituent of urine decreases.
The decrease in the urine components brings about a decrease in its
volume also due to increased absorption taking place.
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5 blem. ections: Read each question carefully and select the correct answer. Write your wer on a separate sheet of paper. This pertains to a view, a judgment, or an appraisal about a particular matter. a a. fact b. hearsay copinion d. assertion
Answers
You didn't put up the question for me to answer. You put the choices to choose from, but no question.
Which part of the plant releases energy from food
Answers
The Mitochondria of a plant cell releases energy from the food. It is a cell organelle and is present in the cytoplasm. They make most of the essential ATPs (Adenosine Tri Phosphate).
If red blood cells are placed in distilled water and examined under a microscope
no cells are seen.
Explain why no red blood cells would be seen
Answers
Answer:
The distilled water made the red blood cells burst.
Explanation:
Distilled water is a hypotonic solution containing ZERO salt content. It is 100% water, making the red blood cells (RBC) take in water that causes the RBC to swell, then burst.
Describe the composition of the cell membrane
Answers
Explanation:
With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.
what is observable evidence that earth is surrounded by a magnetic field?
Answers
Answer:
Evidence for these geomagnetic reversals can be found in basalts, sediment cores taken from the ocean floors, and seafloor magnetic anomalies. Reversals occur nearly randomly in time, with intervals between reversals ranging from less than 0.1 million years to as much as 50 million years.
Suppose you were interested in the effect of breastfeeding versus formula feeding on the composition of gut flora in newborns. As part of your experiment, stool samples from healthy babies in the study get plated on various agar media. You notice that greater numbers of colonies are recovered when samples are plated on blood agar compared to nutrient agar (NA). After some diligent subculturing, you isolate several bacterial species capable of slow growth on the blood but not on the NA. You correctly surmise that these organisms: ______________
a. are opportunistic blood pathogens.
b. have extensive and complex nutritional requirements not met by NA are inhibited by the ingredients in NA.
c. should be classified as beta-hemolytic.
d. grow because the blood agar suppresses the growth of faster-growing bacteria.
Answers
Answer:
vAurora
Explanation:
the process of activating photoreceptors by altering the photopigments is known as __________.
Answers
The process of activating photoreceptors by altering the photopigments is known as PHOTOTRANSDUCTION. It involves the mechanism by which light can be converted into electrical signals.
Phototransduction refers to the mechanism by which light can be converted into electrical signals.
Visual phototransduction occurs in the part of the eye known as the retina, in specific cells called photoreceptors and ganglion cells.
Photoreceptor cells include rod cells and cone cells, which are sensitive to light.
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Which is the best hypothesis for the extinction of the dinosaurs at the end of the Cretaceous period?
A.
Mammals evolved and killed the dinosaurs.
B.
Humans destroyed all the dinosaurs.
C.
The climate changed and the dinosaurs could not adapt.
D.
The dinosaurs killed each other.
Answers
Answer:
extinction, the best-known being the non-avian dinosaurs. It also destroyed myriad other terrestrial organisms, ...
Explanation:
....
Need ASAP!!!
Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that’s rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops.
A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer.
Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question.
Part B - Whats the students scientific question?
Part C - Construct at least two possible hypotheses for the students experiment
Part D - Choose one hypotheses to make a prediction
Part E - How would you conduct your investigation? In your answer, explain your independent and dependent variables.
Part F - How does the design of your experiment control for outside factors that may affect the results?
Part G - How do you plan to analyze and communicate your results?
~ Please write which part belongs to which answer
GIVING 64 POINTS FOR EACH ANSWER TO BE COMPLETED!
(REPORTING ANY FAKE ANSWERS)
Answers
C- 1: Tomato plants grow faster in compost than in fertilizer. 2: Tomato plants grow taller in compost than in fertilizer.
D- Tomato plants grow taller in natural compost rather than artificial fertilizer.
E- First, I would plant three tomato plants in different pots. One would be full of natural compost, one full of artificial fertilizer, and one with regular dirt. Then, I would wait a few months, giving them the same amount of water each day, and record the results. The independent variables are the amount of time and water, while the dependent variable is the height of the plant after a few months.
F- My design includes a control group, being the plant with the plain dirt, as well as minimizing error by treating the plants with the same amount of water.
G- After a few months, I would record the height of all three plants and see if the tomato plants grown in natural compost or artificial fertilizer were taller.
100 POINTS PLEASE HELP!!!!
Answers
Answer: C
Explanation: TOOK THE TEST
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what do you think whould be the function of each of these cell parts in an animal cell
Answers
Which cell parts?
Cell is the smallest unit of life.
An example of abiotic factors influencing marine organisms is:
*
O predation
competition for food,
parasitism.
salinity.
bacterial disease.
Answers
Answer:
parasitism
Explanation:
the energy required for a seedling to push up out of the ground comes from
Answers
Answer:
Food Storage in the Seed
Explanation:
Seeds require oxygen in order to create energy for germination and development. The embryo obtains energy by decomposing its dietary reserves. This is accomplished, as in other creatures, by a process called as aerobic respiration. —a sequence of processes in which energy is released from glucose using oxygen.