The neurons are guided in their migration to their final destination by their attraction to specific ________
Answers
The neurons are guided in their migration to their final destination by their attraction to specific chemical cues called guidance molecules or guidance cues.
During the development of the nervous system, neurons undergo a series of migration events to reach their appropriate positions and establish functional connections. Guidance molecules play a crucial role in directing the migration of neurons by providing spatial and temporal cues.
There are various types of guidance molecules involved in neuronal migration, including diffusible molecules and cell surface-bound molecules. These molecules can be attractive or repulsive, and their distribution in the developing tissue helps guide the migrating neurons along specific pathways.
Examples of guidance molecules include netrins, semaphorins, slits, and ephrins. These molecules can be secreted by cells or expressed on the cell surfaces of target tissues. Neurons possess specific receptors that recognize and respond to these guidance molecules, allowing them to navigate towards their final destination.
The guidance molecules help guide neurons by creating a gradient or a path for migration, providing directional information, and promoting the growth of axons and dendrites. Through the intricate interplay of these guidance molecules and their receptors, neurons are able to navigate complex environments and establish the intricate neural circuitry of the developing nervous system.
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Related Questions
The simple one-celled organism seen here moves by streaming its cytoplasm into “false feet “ or pseudopods. It can easily change shape to move and engulf its food. What is the name of these animal-like protists?A. amoebaB. parameciumC. euglenoidD. Diatoms
Answers
The organism on the image belongs to the group of Amoeba, they do not possess a cell wall, which allows them to have shifting shape, and extend pseudopod to phagocyte their food.
The digestive system is not involved in elimination of waste.
Please select the best answer from the choices provided
True
False
Answers
Answer:
True
Explanation:
Elimination is work of kidneys
Elimination term is related with the elimination of nitrogenous wastes
How does mining impact the environment?
It has a positive impact on the environment by permanently altering the ecosystem.
It has a positive impact on the environment by releasing chemicals into the environment.
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.
It has a negative impact on the environment by providing new niches for wildlife to inhabit.
Answers
Answer:
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife
Mining affects the environment and has a negative impact on it, this type of human activity produces toxic chemicals that harm wildlife.
What are the impacts of mining?Mining has a significant impact on the environment, as the development of this activity almost always involves suppression of vegetation, exposure of the soil to erosive processes with changes in the quantity and quality of surface and underground water resources, in addition to causing air pollution.
With this information, we can conclude that Mining affects the environment has a negative impact on the environment, allowing toxic chemicals to harm wildlife.
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the amount of carbon dioxide in the atmosphere has been increasing. if this trend continues, what will happen to the temperature of the atmosphere?
Answers
Answer:
The temperature will increase in the climate
Explanation:
When more carbon dioxide in the air it will cause greenhouse effect, rising the temperature in the atmosphere.
Answer: The Answer is A
Explanation:
In New York State, the surface bedrock of the Catskills consists mainly of
*
weakly consolidated gravels and sands
quartzites, dolostones, marbles, and schists
conglomerates, red sandstones, basalt, and diabase
limestones, shales, sandstones, and conglomerates
Answers
In New York State, the surface bedrock of the Catskills mainly consists of d. limestones, shales, sandstones, and conglomerates.
These sedimentary rock types were formed during the Devonian period, approximately 419 to 359 million years ago, when the region was submerged under a shallow sea. As sediments accumulated, they underwent compaction and cementation, eventually becoming the rocks we see today.
Limestones and shales primarily originate from the remains of marine organisms, while sandstones and conglomerates form from the accumulation of sand and pebble-sized particles, respectively. The diverse composition of the Catskills' bedrock reflects the complex geological history of this region and contributes to the unique landscape and natural resources found there. So therefore the correct answer is d. limestones, shales, sandstones, and conglomerates, are the surface bedrock of the Catskills in the New York State.
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helppppppppppppppppp
Answers
Answer:
Choose the corresponding number. (The answer is explained in the explanation in the biological terms).
Explanation:
The label that points to the part of the ATP synthase that is like the blades of a turbine is labeled "F1." The F1 component of ATP synthase contains the catalytic sites responsible for synthesizing ATP, and it rotates like a turbine to drive the synthesis of ATP. Similarly to how the blades of a turbine are moved by water or wind, the F1 component is rotated by the flow of protons through the enzyme, which generates the energy needed to produce ATP.
A study conducted for the Trybow chicken company in 2000 proved that chickens receiving antibiotic treatment do not harm those who eat it. The data was collected from a sample of 3 chickens and was conducted by a company that is not licensed in conducting animal testing. All of the other studies found in scientific journals prove that antibiotics used to treat chickens are harmful to human beings that eat it. Evaluate how credible this data is using 4 of the criteria presented in the chapter. Make sure to present it in a bullet point format.
Answers
Here are four criteria that can be used to evaluate the credibility of the data presented in the study conducted for the Trybow chicken company in 2000:
Sample size: The study only included 3 chickens, which is a very small sample size. A larger sample size would be needed to draw reliable conclusions about the effects of antibiotic treatment on chickens.Source of data: The data was collected by a company that is not licensed to conduct animal testing, which raises questions about the reliability and validity of the data. It is important to use data collected by trained and qualified professionals to ensure the validity and reliability of the results.Methodology: The study did not provide any information about the methodology used to collect the data or to analyze the results, which raises questions about the validity and reliability of the study. A well-designed study should include a clear methodology that is explained in detail.Conclusion: The study concluded that antibiotics used to treat chickens do not harm those who eat it, but this conclusion is contradicted by other studies that have found that antibiotics used in animal agriculture can harm human health. It is important to consider the consensus of scientific evidence when evaluating the credibility of a study.Learn more about credibility Visit : brainly.com/question/24266723
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How much percentage of water are there in our body?
A
80%
B
75%
C
70%
D
77%
Answers
The percentage of water in the human body is approximately 60% (option C).
Water is essential for various functions, such as regulating body temperature, providing a medium for biochemical reactions, and facilitating nutrient absorption and waste removal.
The water content in the body varies based on factors such as age, gender, and body composition. It is important to maintain adequate hydration levels for optimal health and well-being.
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Select all that are functions of neurons and glial cells Receive nerve impulses Protect neurons Nourish neurons Calcium storage
Answers
roles of glial cells and neurons
taking in nerve impulsesDefend neuronsfeed the neuronsNeurons, which are specialized cells with the ability to receive and transmit electrical or chemical impulses, make up the nervous system. Glia, which are cells with complementary information processing roles to neurons, serve as support cells for the neurons.
Without the crucial functions performed by these glial cells, neurons would not be able to operate. In addition to providing myelin sheaths surrounding axons and buffering ions and chemicals that may otherwise injure neurons, glia also direct growing neurons to their destinations.
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Question:-
Select all that are functions of neurons and glial cells
Receive nerve impulses Protect neurons Nourish neurons Calcium storagewhich one of the following statements correctly describes the architecture of a plasma membrane?A) Proteins line the internal, cytoplasmic surface, and phospholipids cover the external surface.B) Proteins, phospholipids, and cholesterol are joined by strong covalent bonds that give the membrane strength.C) Phospholipids line the internal cytoplasmic surface, and proteins cover the external surface, sandwiching cholesterol in the middle.D) Proteins and cholesterol are embedded in the phospholipid bilayer, forming a fluid mosaic.
Answers
The correct statement that describes the architecture of a plasma membrane is "Proteins and cholesterol are embedded in the phospholipid bilayer, forming a fluid mosaic". Option D is correct answer.
The plasma membrane is a thin, semi-permeable membrane that surrounds all cells and organelles. It is made up of two layers of phospholipids, called the phospholipid bilayer. The hydrophilic heads of the phospholipids face outward, towards the aqueous environment, while the hydrophobic tails face inward, creating a nonpolar region in the middle of the membrane.
Embedded within this phospholipid bilayer are proteins and cholesterol molecules. These proteins serve a variety of functions, including acting as transporters for molecules across the membrane, serving as enzymes, and acting as receptors for signaling molecules. The cholesterol molecules also play a critical role in membrane fluidity, helping to keep the membrane stable and flexible.
Overall, the architecture of the plasma membrane is highly dynamic, with proteins and lipids constantly moving and interacting with each other to maintain the structure and function of the membrane.
The correct statement describing the architecture of a plasma membrane is option D.
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in addition to keratinocytes, the stratum spinosum also contains another epidermal cell type called epidermal ______ cells that help to fight infection.
Answers
Keratinocytes are differentiated skin cells found in the outermost layer of the epidermis. Dendritic cells are antigen-presenting cells that play important roles in the adaptive immune response.
In addition to keratinocytes, the stratum spinosum also contains another epidermal cell type called epidermal DENDRITIC cells that help to fight infection.The stratum spinosum is an epidermal skin layer between the stratum granulosum and stratum basale.Dendritic cells are antigen-presenting cells that are capable of processing harmful antigens in order to present them on the cell surface to the T cells of the immune system.Learn more in:
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An earthworm's body plan
consists of all, EXCEPT which
of the following?
A. a simple brain with a nerve cord
B. pores in the skin for food to move in and a stomach in each
segment
C. longitudinal and circular muscles for movement
D. a heart of aortic arches and vessels along the body
Answers
An earthworm's body plan consists of all, EXCEPT pores in the skin for food to move in and a stomach in each segment. Thus, option "B" is correct.
What is an earthworm's body plan?The physique of the earthworm is segmented which appears like numerous tiny rings combined or merged collectively. The earthworm is made of around 100-150 segments. The segmented body portions deliver significant organizational purposes.
Segmentation can help the earthworm move. Each segment or piece has muscles and bristles named setae. The bristles or setae support the anchor and govern the worm when stirring over the soil. The bristles grasp a segment of the worm definitely into the ground while the other portion of the physique projects forward.
The earthworm uses parts to either contract or relaxes self-sufficiently to source the body to grow in one area or contract in other areas. The division supports the worm to be supple and sturdy in its drive. If each section stimulated collectively deprived of being self-governing, the earthworm would be stationary.
Thus, option "B" is correct.
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Thinking about the number of carbon atoms in glucose and in pyruvic acid, explain why there is one molecule of glucose on the left side of the arrow and two molecules of pyruvic acid on the right side of the arrows
Answers
Answer:
Each glucose molecule has 6 C atoms, while each pyruvic acid molecule contains 3 C atoms. As a result, there must be two molecules to hold all six C atoms.
Explanation:
Alleles can either be Blank or Blank.
Answers
Answer: Dominant or Recessive
Define the following terms in Genetics and give an example for each terms: 1) Complete dominant, 2) Incomplete dominant, 3) Co-Dominant
Answers
Genetics is the branch of biology that studies how traits are passed down from one generation to the next.
Here are the definitions and examples of the three types of dominance in genetics:1) Complete dominant: This occurs when one allele completely dominates over the other. In a heterozygous genotype, the dominant allele will always be expressed. For example, if a pea plant with the genotype Rr (where R is the dominant allele for round seeds and r is the recessive allele for wrinkled seeds) is crossed with a homozygous dominant pea plant (RR), all of the offspring will have round seeds because the dominant R allele completely masks the recessive r allele.2) Incomplete dominant: This occurs when neither allele is completely dominant over the other, resulting in a blending of the two traits. In a heterozygous genotype, a third phenotype is expressed which is a combination of the two alleles. For example, if a red flower (RR) is crossed with a white flower (WW), the F1 generation will all be pink (RW).3) Co-dominant: This occurs when both alleles are equally dominant and both traits are expressed in the phenotype. In a heterozygous genotype, both alleles are expressed without one dominating the other. For example, in the human blood type, the A and B alleles are co-dominant. If a person has both A and B alleles, they will have the AB blood type.
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List three things that are special about water?
Answers
1. it is the only liquid that is not made artifically
2. it is found everywhere in the world
3. everyone has it in their bodies
hope this helps
Answer:
universal solvent
60% of the human adult body is water.
Most freshwater is in ice.
Explanation:
Which of the following is a key feature of happiness?
joy
contentment
feeling like life is meaningful
All of the above options are features of happiness
Answers
In the cell line that entered mitosis, why do you think that only a fraction of the cells did so instead of 100%?
Answers
Only a fraction of cells entered mitosis because even though cancer cells divide rapidly, they don't replicate all the time.
Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.
Mitosis is a type of cell division which occurs in the somatic cells to maintain the number of chromosomes in the parent cell. So, this type of cell division is important for the growth and tissue repair.
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
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Which one is not matter?
(a) Electricity
(b) Paper
(c) Water
Answers
Answer:
A) electricity
Explanation:
Matter is something that occupies space and has mass
state two functions of the onjective lens on a microscope
Answers
Answer:
please give me brainlist and follow
Explanation:
In microscopy, the objective lenses are the optical elements closest to the specimen. The objective lens gathers light from the specimen, which is focused to produce the real image that is seen on the ocular lens. Objective lenses are the most complex part of the microscope due to their multi-element design.
Humanity faces a great number of environmental challenges, including: resource depletion, ecosystem service deterioration, pollution, biodiversity loss and climate change. Technology and research have both had positive and negative effects on the environment. Evaluate the impact of scientific research and technology on the environment. What are some ways that scientific research has harmed the environment. Choose ALL that apply. A) Research has led to the depletion of natural resources. Eliminate B) Air, water, heat and noise pollution can all be caused by producing and using technology. C) Scientific research has led to widespread increases in carbon emissions which has led to global climate change. D) Scientific research has caused widespread habitat disturbance and destruction as scientists have invaded ecosystems. E) Manufacturing technology creates large amounts of waste, and used computers and electronics get thrown out when they break or become outdated.
Answers
Answer:
Option B and E and D
Explanation:
Technological advancement has led to growth of industries and manufacturing units and hence the net production of goods. This has led to the use of natural resources and release of pollution of all forms. Environmental research leads to intrusion into niche habitats and hence causes its destruction.
Option B, D and E are correct
a protein that binds to the operator and blocks the rna polymerase is called?
Answers
A protein that binds to the operator and blocks the rna polymerase is called repressor
What sort of protein attaches to a transcriptional operator and stops transcription?The operator gene is bound by a repressor protein that prevents the operon's structural genes from being transcribed in the absence of an inducer.
RNA polymerase interacts with a region of DNA called the promoter, which is near to the gene's start. In bacteria, each gene has its own promoter, which is a collection of co-transcribed genes. The template for transcription is produced when RNA polymerase splits the DNA strands into single strands after binding.
Repressors prevent RNA polymerase from connecting to or moving forward by attaching to operator sequences that are downstream of the promoters and limiting transcription.
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How does the dark color of the fruit flies show up in the F2 generation when the F1 was all light body color
Answers
When the F1 generation of fruit flies has a light body color, the dark color of the fruit flies will appear in the F2 generation because of the Mendelian laws of inheritance. The reason behind this is because the F1 generation of fruit flies are heterozygous for body color, meaning they have one dominant allele (for light body color) and one recessive allele (for dark body color).
During meiosis, the two alleles segregate into separate gametes, with each gamete receiving one allele. Therefore, the F1 generation of fruit flies will produce gametes with either the dominant allele or the recessive allele.
When these gametes combine in the F2 generation, the offspring will have a 3:1 phenotypic ratio of light body color to dark body color. This is because three out of four possible genotypes (BB, Bb, bB) will result in light body color, while one out of four possible genotypes (bb) will result in dark body color.
Therefore, the dark color of the fruit flies will show up in the F2 generation when the F1 was all light body color because of the segregation of alleles during meiosis and the Mendelian laws of inheritance.
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To test a new drug that has the potential of curing people of the common
cold a company asked human volunteers who were coughing and sneezing
to participate in a clinical study. The objective of the experiment was to test
whether the new drug could cure the volunteers in the experimental group of
the common cold. But instead of two groups, these volunteers were randomly
divided into three groups and treated as follows:
Group
Experimental
Group
Yes
Control
Group 1
NO
Control
Group 2
No
New ONS
Orange
Bedre
Yes
No
Yes
Yes
Which of the following is the best explanation of why a second control group
was included in this experiment?
O A To prove that the common cold cannot be cured
B. To provide the volunteers in the study with something to drink
O C. To help researchers conclude that results are related to the new
drug and not to the orange juice
O D. To confuse anyone who is trying to steal their new drug and sell it
as their own invention
Answers
Answer: C
Explanation: A good experiment does everything it can to eliminate confounding, or the influence of external sources on the data being measured. Orange juice could be a factor that plays a role in curing the symptoms, so provide a group with and without orange juice gives you the ability to show that the influence of orange juices didn’t have an effect on the cold, or did, but it gives you a baseline to show the effects of the medicine with and without orange juices.
How does the amount of nitrogen in inhaled air compare to the amount of nitrogen in exhaled air?
A. There is no nitrogen in either
OB. The nitrogen stays the same in both
C. There is more nitrogen in exhaled ait:
D. There is less nitrogen in exhaled air
Answers
Answer:
from my understanding your body doesn't do anything with the nitrogen so the answere would be B
Which two statements are true for fungi?
A.) They can produce their own food because they have chlorophyll.
B.) They often form symbiotic relationships with trees.
C.) They digest food externally.
D.) They can absorb nutrients from food, even though they lack digestive enzymes.
Edmentum (Plato)
Answers
Answer:
B They often for symbiotic relationships with trees
C They digest food externally
Explanation:
___________ is the process of comparing and contrasting embryo development to determine common ancestry.
Answers
Comparative embryology is the process of comparing and contrasting embryo development to determine common ancestry.
Comparative embryology is the study of comparing the development of embryos from different species. Before they specialize in the various organs and systems of the body, all embryos must first develop from a single cell into a multi-celled zygote, then into a clump of cells known as a morula, and finally into a hollow ball of cells known as a blastula.
The study of the similarities and differences that can be found in the embryos of several animals is referred to as comparative embryology. It is likely that shared ancestry is the explanation for similarities found in embryos.
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Pleas give me an answer if you actually really know the answer because everybody is giving different answers, pls
Answers
Answer:
plants
Explanation:
plants are green
Answer:
Some kind of organisms that chloroplasts are found in are green plants and algae, also photosynthetic tissues that are not green, such as red leaves, etc.
Explanation:
Hope it helps!
1.what is the difference between focus and epicenter?
2.Why earthquakers are stronger near the epicenter
Answers
2. The magnitude of an earthquake is related to the total area of its fault rupture. ... When a fault ruptures unilaterally (with the epicenter at or near the end of the fault break) the waves are stronger in one direction along the fault.
Please help meeeeeee
Answers
Answer:
polar
Explanation: