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
Although both eukaryotes and prokaryotes are capable of causing infectious diseases in humans, eukaryotes are unique because they have a/an:
Answers
Answer:
organized nucleus
Explanation:
PLS HELP! MULTIPLE CHOICE
Answers
Explanation:
HELPING CAN BE DONE WHEN THE QUESTION IS POSTED.
Which of the three types of RNA is
involved directly with the process of
transcription?
A. transfer RNA (TRNA)
B. ribosomal RNA (TRNA)
C. messenger RNA (mRNA)
Answers
The organelles that break down lipids, carbohydrates, and proteins into
small molecules that can be used by the cell are called *
A. vacuoles
B. lysosomes
C. ribosomes
D. microfilaments
Answers
Explanation: Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids.
Which of the following is an example of an adaption?
A: Wolves work together to catch prey
B: A dog walks without pulling on its leash
C: Ducks swim near the shore by a picnic area, where food is always available
D: Birds living near a highway learn not to fly away every time a car passes
Answers
Answer:
D
They are adapting to their environment to increase chances of survival.
Using 3-5 sentenes explain how catbon dioxide affetcts earth's clmate.
Answers
Answer:
Carbon dioxide is a greenhouse gas: a gas that absorbs and radiates heat. ... But increases in greenhouse gases have tipped the Earth's energy budget out of balance, trapping additional heat and raising Earth's average temperature.
Explanation:
Carbon dioxide is a greenhouse gas: a gas that absorbs and radiates heat. ... But increases in greenhouse gases have tipped the Earth's energy budget out of balance, trapping additional heat and raising Earth's average temperature.
When a cell divides via asexual reproduction :________.
i. each daughter cell receives exactly half the genetic information in the parent cell.
ii. the genetic information is randomly parceled out to the daughter cells.
iii. each daughter cell receives a nearly perfect copy of the parent cell's genetic information.
iv. each daughter cell receives the same amount of genetic information that was in the parent cell, but it has been altered.
Answers
Answer:
three number each daughter ce receives nearly perfect copy of the parents cells genetic information
After the head is struck, the brain continues to move in the fluid and may be contused on the other side; this type of injury is called:
Answers
Answer:
contrecoupDefinition:
a contusion caused by the brain colliding with the skull on the side opposite the point of impact.Which solution would be MOST effective at reducing the emission of greenhouse gases?
A
reducing carbon dioxide production by increasing use of mass transportation
B
reducing production of fluorinated gases by changing industrial practices
C
reducing production of methane by changing agricultural practices
D
reducing nitrous oxide production by burning less solid waste
Answers
Reducing nitrous oxide production by burning less solid waste.
It is 300 time more potent than carbon dioxide. It is emitted from agriculture, land use, transportation, industry.What is green house effect?It is a process that occurs when energy from planet's sun goes though its atmosphere and warms the planet's surface, but atmosphere prevents the heat from returning directly to space, resulting in warmer planet.
What is atmosphere?
It is a layer of gases that envelope a planet, is held in place by the gravity of the planetary body.
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what birds is a likely biological explanation for The
Mothman?
Answers
Answer:
owl is a like biological explanation for mothman......
what is all of the dna in a set of 23 chromosomes referred to as?
Answers
Answer: The Genome
Explanation:
a change in DNA structure that might be beneficial, harmful, or neutral. What is all of the DNA in a set of 23 chromosomes referred to as? The genome
What else, besides energy, can a molecule of glucose be broken down to form?
Answers
Answer:
carbon dioxide, water, and ATP
Explanation:
Answer:
carbon dioxide, water, and ATP for energy.
Explanation:
cellular respirationa biochemical process in which cells break down glucose and oxygen to make
Whereas sodium is found mainly in the extracellular fluid, most ________ is found in the intracellular fluid.
Answers
the enzyme dicer chops dsrna molecules into small pieces of
Answers
The enzyme dicer chops dsRNA molecules into small pieces of miRNA and siRNA. The correct option is B.
What is Dicer?
Dicer is an enzyme involved in RNA interference (RNAi), a cellular process that regulates gene expression.
Its primary role is to cleave double-stranded RNA (dsRNA) molecules into smaller fragments.
These fragments are typically around 21-25 nucleotides in length and serve as the building blocks for two types of small RNA molecules: microRNA (miRNA) and small interfering RNA (siRNA).
miRNAs are endogenous small RNA molecules that play a crucial role in post-transcriptional gene regulation. siRNAs are also small RNA molecules but are primarily involved in the defense against viral infections and the silencing of transposable elements.Thus, the correct option is B.
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Complete question:
The enzyme dicer chops dsRNA molecules into small pieces of:
A. mRNA and miRNA.
B. miRNA and siRNA.
C. siRNA and rRNA.
D. mRNA and siRNA.
within a forest ecosystem, there is a large amount of diversity among members of a warbler species. of the following stages of meiosis illustrated for a typical cell, which contributes most to diversity among the warblers?
Answers
Crossing over occurs between homologous chromosomes, and is closely involved in genetic variation. The stage that most contributes to diversity is stage C, where you can see chromosomes after crossing-over.
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There are different mechanisms involved in producing genetic variation among descendants. These are,
Crossing-over between homologous chromosomes (prophase 1), Random lining of homologous chromosomes (metaphase 1),Random fertilizationThe Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.
The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.
After crossing over, homologous chromosomes get separated again.
In the attached imaged there are four different stages of meiosis.
Stage C is the one that contributes the most to diversity.
We can see that crossing over has already occurred between homologous chromosomes, and they have already interchanged segments.
In the image you will see the difference between chromosomes that has gone through the crossing over mechanism, and chromosomes that has not. The difference in color represents segments interchange and variation.
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A snail moves 1.1 cm/min how far could it travel in 48 min
Answers
Answer:
52.8 centimeters
Explanation:
1.1 times 48 minutes is 52.8
Answer:
52.8 cm
Explanation:
1.1 cm/min multiplied by 48 equals 52.8
the model show's a portion of a DNA strand. What does the pentagon represent in the model?
Answers
Please help !!!
Will give you the brainliest !!
Answers
Answer:
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1. Generally, production traits such as milk, fat, and protein yield are moderately heritable. While milk production traits are important, many other traits are of economic importance in dairy cattle breeding, including conformation, longevity, reproduction, health, and workability traits.
2. Would've surely practiced selective breeding via controlled mating... the three ways : Outcrossing , Line Breeding and Inbreeding can help in producing a herd of high yielding beef capital.
hope helpful~
SOMEONE PLEASE HELP!!!!!
Five similarities and differences between a prokaryote and a eukaryote cell.
Answers
Answer:
Prokaryotic Cell Eukaryotic cell
Mitochondria absent Mitochondria present
Cytoskeleton absent Cytoskeleton present
Ribosomes smaller Ribosomes larger
Explanation:
two types of cells are found in the organisms: eukaryotic and prokaryotic depending on whether cells contain membrane-bound organelles or not.
magine a white bug and a brown bug on a brown rock. Which bug do you think a bird would most likely try to catch? Explain your choice.
Answers
white
Explanation:
the white bug is lighter so the bird will most likely to go for it
Where, in terms of an ellipse, is the Sun located with respect to the orbit of each planet? Which
one of Kepler's Laws does your answer support?
Answers
Answer:
focus
The Sun is at one focus. The planet follows the ellipse in its orbit, meaning that the planet to Sun distance is constantly changing as the planet goes around its orbit. Kepler's Second Law: the imaginary line joining a planet and the Sun sweeps equal areas of space during equal time intervals as the planet orbits.
Match each part of the endocrine system with the correct label.
Answers
Answer:
Your numbers are
1 Pineal gland
2 Hypothalamus
3 Pituitary Gland
4 Thyroid Gland
5 Thymus
6 Pancreas
7 Adrenal Glands
8 Testes
9 Ovaries
Explanation: are correct
Answer:
1 Pineal gland
2 Hypothalamus
3 Pituitary Gland
4 Thyroid Gland
5 Thymus
6 Pancreas
7 Adrenal Glands
8 Testes
9 Ovaries
Explanation:
!!!!NEED HELP ASAP ILL GIVE BRAINLIEST AND 25 POINTS!!!!! How do proteins help transport of materials through the membrane?
Answers
Answer:
Channel proteins can aid in the facilitated diffusion of substances by forming a hydrophilic passage through the plasma membrane through which polar and charged substances can pass.
Explanation:
Answer: By forming a continuous protein pathway across the membrane, these proteins enable specific hydrophilic solutes to cross the membrane without coming into direct contact with the hydrophobic interior of the lipid bilayer. Carrier proteins and channel proteins are the two major classes of membrane transport proteins.
what are the cell theories formulated by schwann and schielden?
Answers
Answer:
By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
Explanation:
Hope this helps
Describe the three types of waves that emanate from and earthquake. Compare their speed, type of motion and what the types of material they will travel through (solid/ liquid) PLZ HELP ME DUE TONIGHT!!!!!!!
Answers
Answer:
The types of waves that emanate from and earthquake are the body waves (P-waves and S-waves), and the surface waves. The surface waves travel along the suface, and are are the slowest, even though they do the most damage in an earthquake. While the P-waves travel the fastest through solids, liquids, and gases. S-waves, however only travel through solids.
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Please answer ! Best answers will be marked as brainliest and will be given thanks and 5 stars , Any unnecessary answer , will be deleted and will hack your points.
Answers
Answer:
A. Northern tropic, equator, Southern tropic (I think Im not double sure)
B. Because the sun's rays hit the earth's surface at a higher angle at the equator
C. If earth did not tilt and orbited in an upright position around the sun, there would be minor variations in temperatures and precipitation throughout each year as Earth moves slightly closer and farther away from the sun
D. It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Explanation: hope it helps love :)
Which is a point mutation and not a frameshift mutation?
mutagen
insertion
deletion
silent
Answers
Answer:
The correct answer is D. Silent
I can assure this is the correct answer because I took either the test or review, I don't remember but yeah I know its correct also, because of the other person so be sure to say thanks to them before me!
Hope I helped! <3
A silent mutation is a point mutation and not a frameshift mutation. Therefore, the correct statement is option D.
What are point mutations?Mutagens are agents causing mutations in DNA sequence. Point mutations are due to a change in a single nucleotide base in a DNA sequence and frameshift mutations are due to changes that are the result of the insertion or deletion of nucleotide bases, thereby, shifting the reading frame of the sequence and the way is changed in which it is translated into a protein.
A silent mutation is a point mutation that does not change the amino acid sequence of a protein, as the mutated codon still codes for the same amino acid, thereby, not affecting the function of the protein.
Insertion and deletion mutations are frameshift mutations as they alter the reading frame of the sequence which results in a completely different amino acid sequence.
Therefore, the silent mutation is a point mutation.
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Which molecule is a high-energy output of the light reactions? (1 point)
A) АТР
B) hydrogen
C) oxygen
D) ADP
Answers
Answer:
A) ATP
Explanation:
A dog who inherits an allele for
curly hair and an allele for straight
hair has curly hair because the
allele for-
E. curly hair is recessive.
F. curly hair is dominant.
G. straight hair is dominant.
H. curly hair is inherited from both
parents.
Answers
Which letter on the diagram below shows where M phase would occur?
Answers
Answer: D
Explanation: