Which cells guide neurons in the developing brain?
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Related Questions
A scientist was studying a population of elephants. The first year, he counted a population of 80. Over the next eight years, the population’s numbers were 94, 100, 103, 110, 125, 120, 125, 120. What appears to be the carrying capacity for this population?
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Answer:
c
Explanation:
on edge
Which of these organelles is covered in ribosomes
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Answer:Rough endoplasmic reticulum
Answer:
vtttggwuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuyeeeeeeeeeeeeeeeeeeeeeeee
Explanation:
what is the term used for summer sleep
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Answer:
Estivate is the summer equivalent to hibernate. Instead of resting through the winter with lower metabolism activity, animals that "estivate" sleep through the warmer months.
If a yellow halo is present around a colony on a mannitol salt agar (MSA) plate, the bacterium cannot ferment mannitol.
true
false
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If a yellow halo is present around a colony on a mannitol salt agar (MSA) plate, it indicates that the bacterium can ferment mannitol. hence the statement is not true, it is false.
Mannitol salt agar is a selective and differential medium commonly used to culture and differentiate Staphylococcus species, particularly Staphylococcus aureus.
The medium contains high salt concentration, which inhibits the growth of most bacteria except for staphylococci that can tolerate such conditions.
The differential aspect of MSA is due to the inclusion of mannitol, a sugar alcohol, as the fermentable carbohydrate source. Staphylococcus species that are capable of fermenting mannitol produce acid as a byproduct of fermentation.
This acid production causes a drop in the pH of the agar surrounding the bacterial colony, leading to a change in the pH indicator present in the medium.
The pH indicator in MSA is typically phenol red, which turns yellow in an acidic environment.
Therefore, if a yellow halo is observed around a bacterial colony on an MSA plate, it signifies that the bacterium can ferment mannitol and produce acid.
In summary, the presence of a yellow halo around a colony on an MSA plate indicates that the bacterium is capable of fermenting mannitol, not the other way around.
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How do you think the first cell came into existence? Write a paragraph stating your opinion
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Answer:
The first cell is given thanks to endosymbiosis, through the union of different organisms that coexist in one, then sharing different organelles that allow them to coexist with each other.
Explanation:
The first cell is thought to have arisen by the enclosure of self-replicating RNA and associated molecules in a membrane composed of phospholipids.
subject is science
Please help me with this
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Answer:
1st is form a hypothesis. that's all I know. Sorry.
Explanation:
a secretion produced by certain cells of the alveoli that reduces the surface tension of water molecules, thus preventing the collapse of the alveoli after each expiration is a/an:
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Alveolar Surface Tension is Reduced by Pulmonary Surfactant. A lipoprotein substance known as surfactant is secreted by type II alveolar cells.
What use do alveoli serve?While breathing in and out, oxygen and nutrients are exchanged between the blood and alveoli in the lungs. When oxygen is inhaled from the air, it gets to the body's tissues via the alveoli, blood, and structures inside the body.
What components make up alveoli?An alveolus is made up of an extracellular matrix encircled by capillaries, a layer of simple columnar mucosa (very thin, flattened cells), and also an epithelial layer. The alveolar membrane, sometimes known as the oxygen diffuses, which permits the exchange of gases, includes the epithelial lining.
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If the individuals in a population mate at random, and if allele h1 is at frequency 0. 60, what is the frequency of h1h1 offspring?.
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Answer: Frequencies of two alleles in a gene pool before and after many random matings
Explanation:
Frequencies of two alleles in a gene pool before and after many random matings
The allele frequency of h1h1 in offspring is 0.36 if individuals in the population mate at random, the allele of interest is divided by the total number of copies of all the alleles.
What is the frequency of the allele?The number of times the allele of interest is detected in a population is divided by the total number of copies of all the alleles at that particular genetic locus in the population to compute the allele frequency.
In a population, if individuals mate at random sampling if h1 has a frequency of 0.60, the frequency of h1h1 offspring is 0.36, in the population.
The frequency of alleles can be expressed as a decimal, a percentage, or a fraction. Allele frequencies vary from 0 (present in no people) to 1 (present in all individuals); in a population, all allele frequencies for a particular gene add up to 100%.
Therefore 0.36 is the frequency of h1h1 in the population for individuals at random mates for h1 frequency of 0.60 in the population.
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1.
Reactants
A. The ending materials in a reaction
B. The ability of a system to do work or produce heat
2.
Products
C. The process by which autotrophs use sunlight, carbon
dioxide, and water to make glucose
3.
Photosynthesis
-
D. The starting materials in a reaction
4.
Cellular respiration
-
E. The process by which cells use electron transport
chains to transfer the energy in nutrient molecules to
the chemical bonds of ATP
5.
Energy
Answers
Answer:
A) Products
B) Energy
C) Photosynthesis
D) Reactants
E) Oxidative phosphorylation
what qualitative information can a high-resolution transmission electron microscope (hr-tem) reveal about a material? (check all that apply.)
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A high-resolution transmission electron microscope (HR-TEM) can reveal several qualitative information about a material, including its crystal structure, lattice defects, grain boundaries, chemical composition, and the presence of nanoparticles or nanoscale features.
A high-resolution transmission electron microscope (HR-TEM) is a powerful tool for investigating the structure and properties of materials at the atomic scale. By using a focused electron beam to transmit through a thin specimen, HR-TEM can provide detailed qualitative information about the material under study.
Firstly, HR-TEM can reveal the crystal structure of a material. By analyzing the diffraction patterns produced by the electron beam interacting with the crystal lattice, researchers can determine the arrangement of atoms within the material.
Secondly, HR-TEM can identify lattice defects within a material. These defects include vacancies, dislocations, stacking faults, and other structural imperfections that can affect the material's mechanical, electrical, or optical properties. HR-TEM allows researchers to visualize and characterize these defects at high resolution.
Furthermore, HR-TEM can detect and analyze grain boundaries in polycrystalline materials. Grain boundaries are interfaces between adjacent crystalline grains and can significantly influence the material's properties. HR-TEM enables researchers to examine the structure and properties of grain boundaries, providing insights into the material's behavior.
Additionally, HR-TEM can provide information about the chemical composition of a material. By utilizing energy-dispersive X-ray spectroscopy (EDS) in combination with TEM, researchers can map and identify the elements present in the material, aiding in the understanding of its composition and elemental distribution.
Lastly, HR-TEM is capable of visualizing nanoparticles and nanoscale features within a material. The high-resolution imaging capability of HR-TEM allows for the observation and characterization of nanoscale structures, such as nanoparticles, nanotubes, and nanowires, providing valuable insights into their size, shape, and arrangement.
In summary, a high-resolution transmission electron microscope (HR-TEM) can reveal qualitative information about a material's crystal structure, lattice defects, grain boundaries, chemical composition, and the presence of nanoparticles or nanoscale features. This information is crucial for understanding the material's properties and behavior at the atomic and nanoscale levels.
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what are the pros/cons of building trees using a bioinformatics approach? compare and contrast this method to the other methods we have used to build trees in this class. are there certain methods that are more useful for certain types of data?
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A significant advantage is that it forces the conversation of all possible outcomes of a decision and traces each path to a conclusion. The most widely used machine learning algorithms in bioinformatics and statistical genetics use tree-based techniques like decision trees.
What about bioinformatics approach?Bioinformatics approaches to AMR research can be broadly divided into two groups: those that examine the underlying molecular causes of AMR and those that concentrate on quick and accurate predictions of AMR to be implemented in clinical settings. This course serves as an interdisciplinary introduction to computational techniques that are utilized to address significant issues in DNA and protein sequence analysis.Although the course's main focus is algorithms, it also contains readings that give science and engineering students the required biological background.The interdisciplinary study of biology, computer science, and information technology is known as bioinformatics. The computer-aided study of biology and genetics is known as bioinformatics. In other words, it alludes to the study of genetics and other biological data using computers.Molecular biology and plant genetic resources are two areas where the science of bioinformatics is currently gaining prominence. Identification of genes and proteins, as well as their activities, evolutionary links, and conformation prediction, are the main goals. The utility of historical data is greatly increased by bioinformatics tools because they allow researchers to filter through vast amounts of data from several studies and discover new connections.Learn more about bioinformatics approach here:
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As a result of the development shown on this graph, prices should.
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Answer:
The full question please? I'll answer it
Answer:
fall
Explanation:
edge
A marine fossil is found in a location that is now dry land. what can you predict about what the enviroment was like in the area many year sago?
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If a marine fossil is found in a location that is now dry land, it suggests that the area was once underwater or part of a marine environment. This indicates a significant geological change, such as uplift or sea level regression.
Based on this information, we can make several predictions about the environment in the area many years ago:
Presence of an Ancient Sea: The marine fossil indicates that there was a body of water, such as an ocean, sea, or lake, in the area. The presence of marine organisms suggests a connection to the ocean, rather than just a freshwater lake.
Sedimentary Deposits: The presence of marine fossils suggests the accumulation of sedimentary deposits in the area. Sedimentary rocks, such as sandstone, limestone, or shale, may be found in the vicinity, indicating the former presence of water and the deposition of sediment over time.
Paleoenvironment: The types of marine fossils found can provide insights into past environmental conditions. For example, the presence of coral fossils suggests the existence of coral reefs, while the presence of shell fossils may indicate a shallow marine environment.
Geological History: The discovery of a marine fossil on dry land implies a geological change that occurred over time. It could be the result of tectonic movements, such as uplift or the emergence of land due to plate tectonics, or changes in sea level, such as sea level regression.
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In its simplest form, a(n) ______ is a node on a network that serves as an entrance to another network.
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In its simplest form, a gateway is a node on a network that serves as an entrance to another network. It acts as a bridge between two different networks, allowing communication and data transfer between them.
A gateway acts as an intermediary device that enables connectivity and facilitates the exchange of information between networks that may use different protocols or have different network architectures. It provides a point of entry for data packets to enter or exit a network, ensuring that the packets are properly routed and delivered to the intended destination.
Gateways often perform various functions, such as protocol conversion, address translation, and network security. They can be hardware devices or software applications that are configured to handle specific networking tasks. By utilizing gateways, networks can be interconnected, allowing seamless communication and enabling users to access resources and services across different networks.
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vasopressin is a hormone produced in the hypothalamus that regulates the concentration gradients of body fluids. vasopressin is 5.94% s by mass, and each vasopressin molecule contains 2 sulfur atoms. calculate the molar mass of vasopressin
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The molar mass of vasopressin is 1082 g/mol.
To calculate the molar mass of vasopressin, we need to know the atomic masses of the elements that make up the molecule.
First, let's calculate the mass of sulfur in vasopressin. Since each molecule contains 2 sulfur atoms, the mass of sulfur in vasopressin can be calculated as follows:
mass of sulfur = 2 * mass of 1 sulfur atom = 2 * 32 g/mol = 64 g/mol
Next, let's find the total mass of vasopressin. According to the information given, vasopressin is 5.94% sulfur by mass, so the total mass can be calculated as follows:
mass of vasopressin = (mass of sulfur) / (percent sulfur by mass) = (64 g/mol) / (5.94%) = 1082 g/mol
Therefore, the molar mass of vasopressin is 1082 g/mol.
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I don't understand any of it. I really need some help. Don't mind the answers on there, they're probably wrong. I know you have to use Hardy Weinberg but exactly how do I do that? Completely lost
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Answer: I have done this work in the pass same answers as mine to so your correct.
Explanation:
hoped this helped have a mathtastic day
The Hardy-Weinberg theory states that a population in equilibrium expresses the same allelic and genotypic frequencies generation after generation. 1) F = 9.4%, fch = 29.6%, fh = 43.3%, f= 17.7%, FF = 0.88%, Ffch = 3.3%, Ffh = 5.5%, Ff = 8.1%, fchfch = 3.13%, fchfh = 10.5%, fchf = 15.3%, fhfh = = 8.8%, fhf = 25.6%, ff = 18.8%. 2) FF = 30.6, Ffch = 114.8, Ffh = 191.3, Ff = 281.8, fchfch = 108.9, fchfh = 365.3, fchf = 532.3, fhfh = 306.2, fhf = 890.6, ff = 654.
What is the Hardy-Weinberg equilibrium?
Hardy-Weinberg equilibrium is a theory that describes a population that is not evolving, it is in equilibrium. The allelic and genotypic frequencies in this population remain the same generation after generation.
Assuming a multiallelic gene, there are different equations we can use to determine the frequencies.
Assuming 4 alleles,
Allelic frequencies
prqsGenotypic frequencies
p² ⇒ Homozygousq² ⇒ Homozygousr² ⇒ Homozygouss² ⇒ Homozygous2pq ⇒ Heterozygous2pr ⇒ Heterozygous2ps ⇒ Heterozygous2qr ⇒ Heterozygous2qs ⇒ Heterozygous2rs ⇒ HeterozygousEquations,
p + q + r + s = 1p² + q² + r² + s² + 2pq + 2pr + 2ps + 2qr + 2qs + 2rs = 1Available information,
Alleles Frequency
F p = 0.094fch q = ?fh r = ?f s = ?Genotypes Frequencies
FF p² = ?Ffch 2pq = ?Ffh 2pr = ?Ff 2ps = ?fchfch q² = ?fchch 2qr = ?fchf 2qs = ?fhfh r² = 0.088fhf 2rs = ?ff s² = 0.188Now, let us first take allelic frequencies,
p = 0.094
r = √r² = √0.088 = 0.296
s = √s² = √0.188 = 0.433
q = ?
We can clear the equation p + q + r + s = 1 to get the value of the q allele
p + q + r + s = 1
0.094 + q + 0.296 + 0.433 = 1
q = 1 - 0.094 - 0.296 - 0.433
q = 0.177
So,
p = 0.094 = 9.4%r = 0.296 = 29.6%s = 0.433 = 43.3%q = 0.177 = 17.7%Now, let us get the genotypic frequencies,
p² = 0.094² = 0.0088 = 0.88%2pq = 2 x 0.094 x 0.177 = 0.033 = 3.3%2pr = 2 x 0.094 x 0.296 = 0.055 = 5.5%2ps = 2 x 0.094 x 0.433 = 0.081 = 8.1%q² = 0.177² = 0.0313 = 3.13%2qr = 2 x 0.177 x 0.296 = 0.105 = 10.5%2qs = 2 x 0.177 x 0.433 = 0.153 = 15.3%r² = 0.088 = 8.8%2rs = 2 x 0.296 x 0.433 = 0.256 = 25.6%s² = 0.188 = 18.8%If these calcs are right, then the addition of all these genotypic frequencies should equal one.
p² + q² + r² + s² + 2pq + 2pr + 2ps + 2qr + 2qs + 2rs = 1
Now, to get the number of individuals with each genotype, you just need to multiply the genotypic frequency by the total number of individuals.
Number of individuals with each genotype,
p² = 0.0088 x 3479 = 30.6 2pq = 0.033 x 3479 = 114.82pr = 0.055 x 3479 = 191.32ps = 0.081 x 3479 = 281.8q² = 0.0313 x 3479 = 108.92qr = 0.105 x 3479 = 365.32qs = 0.153 x 3479 = 532.3r² = 0.088 x 3479 = 306.22rs = 0.256 x 3479 = 890.6s² = 0.188 x 3479 = 654You can learn more about Hardy Weinberg equilibrium at
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The ______ (the cell body of a neuron) gives rise to branch-like processes called ______, which are the primary sites for receiving signals from other neurons.Multiple choice question.neurosoma, dendrites
Answers
Answer:
Neurosoma
Dendrites
Explanation:
which of the following is an example of a concave structure
Answers
Answer: The definition of concave is to be curved inward. ... At the location of the fracture, we see the skull is curved inward, so we would say the skull is concave. Some other examples would be a dented can or car bumper. Whenever an object is curved inward, we say the object is concave.
Can someone help me really quick
Answers
Answer:
25 degrees
Explanation:
which term describes the mechanism of dna replication in which the newly made double-stranded dna contains one parental strand and one daughter strand?
Answers
The phrase "semiconservative replication" refers to the DNA replication process in which the newly formed double-stranded DNA contains both a daughter and a parent strand.
What is DNA and how does it work?The instructions required for a creature to grow, endure, and reproduce are encoded in its DNA. Nucleotide sequences must be transformed into instructions that can be utilized to create proteins, that are the large molecules that carry out the majority of the tasks in our bodies, in order to perform these activities.
Why is DNA important?DNA is crucial for inheritance, protein coding, for supplying guidelines for life or its activities in all living things. DNA regulates a person's or perhaps an animal's growth, reproduction, or final death. The average human cell has 23 sets of chromosomes, making it.
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do all cells have the same identical DNA?
Answers
Answer: No.
Explanation: We are all unique. If all our cells had the same DNA we would all be the same. Also specific calls in one’s body do certain things and if they all had the same DNA your body wouldn’t properly function.
C. _____________________ store food or pigments.
Answers
Answer:
Plastids
Explanation:
The impact of mineral exploitation on the environment depends on which of the following factors?
A) ore quality and mining procedures
B) rock type and subsurface materials
C) hydrologic conditions and gold quality
D) climate and plant life
Answers
Answer: A
Explanation: I just took the quiz and got it right. Mining procedures can be detrimental to the surrounding environment if not handled correctly. Ore quality can affect what mining procedures need to happen.
which statement best describes the reaction force?
Answers
Answer:
I believe the awnser is; The reaction force is the force of the ball away from the racket
A radio wave travels through space with a frequency of 2 x 104 Hz. If the speed of the radio wave is 3 x 108 m/s,
what is the wavelength of this wave?
O 6 x 10^12 m
O 1 x 10^4 m
O 6.7 x 10^-4 m
O 1.5 x 10^4 m
Answers
The wavelength of the radio wave is \(1.5 * 10^4\) meters.
The wavelength of a wave is the distance between two adjacent points that are in phase, or in the same phase as their cycles on the wave. For example, the distance between two successive peaks or troughs of a sine wave is known as a wavelength.
A wave's speed, wavelength, and frequency can be calculated using the following formula:
Wavelength = speed / frequency
Substituting the given values:
Wavelength = \(3 * 10^8 m/s / 2 *10^4 Hz\)
Wavelength = 15,000 meters or 1.5 x \(10^4\)meters
So, the correct option is D.
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Which of the following correctly identifies the proper nitrogen base pairing in DNA
replication?
A:T;G:C
T:C;G:A
A:U; G:C
T:U; C: G
Answers
Answer:
A:T;G:C
Explanation:
adenine goes with thymine unless it's mRNA and it will go with uracil. guanine and cytosine always go together.
The nitrogenous base pair A:T;G:C is the proper nitrogen base pairing in DNA replication. The correct option is A.
What is base pairing?A base pair is a primary component of double-stranded nucleic acids that consists of two nucleobases that are hydrogen-bonded to one another.
They are the cornerstones of the DNA double helix and make a contribution to both DNA and RNA's folded structure.
A base pair is made up of two matching DNA nucleotide bases that join to form a ranks of the DNA ladder.
DNA is made up of two interconnected strands that wind around one another to form a twisted ladder-like structure known as a double helix.
There are four major types of DNA nucleotides in DNA adenine (A), thymine (T), guanine (G), and cytosine (C).
Here, purine will pair with pyrimidine means, adenine will pair with thymine and guanine will pair with cytosine.
Thus, the correct option is A.
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Which part of the brain stem connects with the spinal cord?
Medulla oblongata.
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The region of the brain stem that attaches to the spinal cord is known as the medulla oblongata.
The brainstem and spinal cord are joined by the medulla oblongata, which carries a number of significant functional areas. It consists of the system that controls the heart and lungs, as well as the descending and ascending motor and sensory ganglia and the origin of the cranial nerves IX, X, XI, and XII. In the medulla, motor neurons travel from the left motor cortex to the right side of the spinal cord. The most caudal part of the brainstem, which is roughly where the foramen magnum is located, is the medulla. The median fissure, which links with the spinal cord's median fissure anterior to the medulla oblongata, is present.
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How does physics relate to the solar system
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"If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, what product will be collected?"A. Transgenic bacterial plasmidsB. Hepatitus B frusesC. Hepatitus B vaccineD. Hepatitus resistant bacteria
Answers
If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, the product collected will be transgenic bacterial plasmids, inside the bacteria, in order to proove if the transgenic plasmid actually gives the bacteria resistance to the virus, it has to be grown in an infected medium.
The correct answer is option A.
Which of the following describes the
coastal photic zones?
A. permanent darkness below 1000 meters with
bioluminescent bacteria, bottom feeders, and angler fish
B. up to 200 meter depth and includes photosynthetic
plants, sea anemones, sponges, crabs, and clams
C. the "twilight zone" between 200-1000 meters deep
and includes whales and octopi and little life
Answers
Photic zone up to 200 meter depth and includes photosynthetic plants, sea anemones, sponges, crabs, and clams. The correct option is B.
What is photic zone?The photic zone, also known as the euphotic zone, epipelagic zone, or sunlight zone, is the uppermost layer of a body of water where phytoplankton can perform photosynthesis.
It goes through a number of physical, chemical, and biological processes that allow nutrients to enter the upper water column.
The photic zone is the top layer of the ocean, closest to the surface, and is also known as the sunlight layer. Enough light penetrates the water in this zone to allow photosynthesis.
Thus, the correct option is B.
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