Which germ layer generates the neural tube?

Answers

Answer 1
The ectoderm is the germ layer that generates the neural tube. It also develops in to the surface ectoderm and the neural crest. This is how we get hair, nails, cornea and tooth enamel.

Related Questions

Although salts of fatty acids form micelles, phospholipids and glycolipids form bimolecular sheets because of

Answers

Although salts of ................................... because of THE PRESENCE OF TWO FATTY ACYL CHAINS.
Phospholipids and glycolipid usually form bimolecular sheets because they are made up of two distinct regions, one of which is hydrophlic and the other is hydrophobic. The hydrophobic tail of each sheet interacts with one another forming a hydrophobic interior which acts as a permeability barrier.

________ is a phenomenon that explains the tendency for the function of one part of the brain to depend on the activity of another.
a. perfusion imaging (pi)
b. inhibitory activity
c. blood oxygen level dependent (bold)
d. neural context

Answers

Hello There!

Neural context is a phenomenon that explains the tendency for the function of one part of the brain to depend on the activity of another.

Answer: D. Neural Context.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
the answer is D. neural context

¬ jesus knows the answer to everything

Knowing what tetanus toxin does to motor neuron activity, predict what would happen to the concentration of acetylcholine in the synaptic cleft.

Answers

The tetanus is a disease caused by the bacterium Clostridium tetani. The Clostridium tetani is a normal inhabitant of the soil and can easily contaminate dirty wounds, especially those due to farm practices. In the body, these bacteria produce a toxin called tetanospasmin. The toxin enters the central nervous system which is the brain and spinal cord where it blocks the mechanisms that inhibit motor neurons from firing when a muscle is relaxed. With this inhibition removed, the neurons fire repeatedly and continually stimulates the muscle, causing painful and increasingly stronger muscle spasms. The masseter or jaw muscles are often the first muscles involved, and it is the spasm of these muscles that gives rise to tetanus' common name lockjaw, also called trismus. The muscles of the face, neck, back, and proximal limbs are also commonly affected. The contraction of the facial musculature leads to a characteristic facial expression with a teeth-baring grin and raised eyebrows. Contraction of the back muscles may cause the back to arch posteriorly.

WILL GIVE A BRANILEST AND 20PTS

Widespread hunting of predators may result in _____.


a safer environment


overpopulation of prey


the arrival of new predators


an abundance of vegetation

Answers

Hello Ziplovin31, widespread hunting of predators may result in overpopulation of prey.

Answer: Option B

Explanation: The population of prey inversely depends on the population of predators.

Predators are the organism that prey on other organism for their survival.

As they are inversely proportion to each other, more is the number of predators less is the number of prey and less is the number of predators more is the number of prey.

for example snake eat mouse, as here mouse is the prey and snake act as predator, if the population of snake decreases then the population of mouse will increase.

Thus, the correct answer is option B.

Sadaf has irregular menstruation, is overweight, and has excessive body and facial hair, and acne. what condition could she have?

Answers

Answer:  "polycystic ovarian syndrome (PCOS)" .
_________________________________________________

what type of bond keeps each individual DNA strand together?

Answers

The type of bond that keeps each individual strand of DNA together is HYDROGEN BOND. The hydrogen bond involved a base from one strand and another base from the second strand, thus forming a complimentary pair. Individually, the hydrogen bonds are weak but collectively, they are quite strong.

Each DNA strand is held together internally by covalent bonds, while hydrogen bonds keep the two strands of the double helix joined, enabling them to unzip easily during DNA replication and repair.

The type of bond that keeps each individual DNA strand together is the covalent bond, which connects the sugar-phosphate backbone within each strand. Meanwhile, the two strands of the double helix of DNA are held together by hydrogen bonds. These hydrogen bonds are relatively weak, allowing the two strands to unzip during DNA replication, where each strand serves as a template for creating a new complementary strand.

The base pairing rules, Adenine (A) to Thymine (T) and Guanine (G) to Cytosine (C), are facilitated by these hydrogen bonds. Each base pair is connected by multiple hydrogen bonds - A and T by two hydrogen bonds, and G and C by three - to maintain the double helix structure of DNA.

In summary, the double-stranded structure of DNA is an artistic yet accurate portrayal of the hydrogen bonding holding the two strands together. This bond provides great strength when all are connected and allows for the necessary unzipping that occurs during DNA replication and repair processes.

Describe how the articulating bones of the elbow prevent hyperextension

Answers

The elbow is a hinge joint consisting of three articulations which allow flexion and extension of the elbow, and also the supination and pronation of the forearm and the wrist at the elbow. The anatomy and the spacing of the bones in this joint allows only motion in one axis to flex and extend. The supporting ligaments and muscles also prevent hyperextension. 
Final answer:

The articulating bones of the elbow prevent hyperextension through the support of ligaments and the articular capsule. The ulnar collateral ligament and the radial collateral ligament resist hyperextension, while the articular capsule prevents side-to-side movements.

Explanation:

The articulating bones of the elbow prevent hyperextension through the support of several ligaments. The ulnar collateral ligament, located on the medial side of the elbow, is the strongest and resists hyperextension. The radial collateral ligament on the lateral side of the elbow also helps prevent hyperextension. Finally, the articular capsule of the elbow, which is thickened with intrinsic ligaments, prevents side-to-side movements, including hyperextension.

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What explanation might an economist provide why some people smoke cigarettes smoke cigarettes when such behavior can lead to health​ consequences? some people likely smoke cigarettes smoke cigarettes because?

Answers

People largely ignore the health consequences of smoking due to its addictive nature. Many people pick up smoking very young, so it becomes part of their routine early on.

How is earth heated through conduction?

Answers

Conduction is one of the ways that energy is transferred from the earth's atmosphere to the air. Conduction is the process by which heat energy is transmitted through collisions between neighboring molecules. Think of a frying pan set over an open camp stove.

No machine can achieve 100% efficiency in terms of work output. In any mechanical system, what is considered the most common cause for some of the work being turned into thermal energy?
A) friction
B) inefficiency
C) poor design of the machine
D) not using the machine properly

Answers

The answer is A, friction.

Friction is the force that resists movement, and that's why oil is used as a lubricant and why ball bearings are used for machines that need to move with very little friction(i.e. bike wheels, roller skates, fidget spinners)

Answer B is too vague
C will probably reduce efficiency greatly, but not specifically in a way that turns work into thermal energy.
D is the same as C, except that it places the blame on the person using the machine, not the machine itself.


Hope I helped clear it up for you :)
The answer is A, Friction. The other ones don't make sense

Friction- action of one surface or object rubbing against one another

Hope this helps!

As discussed in the introductory passage, the normal human microbiota has coevolved with humans. this microbiota consists of a wide variety of organisms interacting with each other and with their human host. for a normal, healthy human host, how is/are the majority of these relationships described?

Answers

The vast majority of the relationships that can be observed between humans and microbiota are commensalism and mutualism. These relationships are the reasons to why these organisms thrive in their environment because the microbiota living inside humans are able to obtain food and energy immediate to their cellular process. Consecutively, humans are able to metabolize some food consumed through these organisms as long as they are regulated and monitored. 

The goal of olpc experiment with solar-powered tablets in ethiopia was to ____.

Answers

Answer:  "improve literacy in children" .
_________________________________________________

How do the roots of most plants obtain food for survival?
A)They store food within them.
B)The phloem tissue carries food to the roots.
C)They survive by absorbing water from the soil.
D)They make their own food, like the rest of the plant.

Answers

ITS B The phloem tissue carries food to the roots.

Answer:

B)The phloem tissue carries food to the roots.

Explanation:

As you may already know, plants produce their own food through photosynthesis. However, these foods are produced in the leaves, but need to be distributed throughout the plants, including must reach the roots. Who distributes the products produced during the photosynthesis is Floema.

Phloem is an important tissue related to the conduction of elaborate sap (produced in photosynthesis) in the body of the plant. This means that it is through this tissue that substances such as water, sucrose, amino acids, nucleic acids, vitamins and inorganic ions are transported to all parts of the plant, including the roots.

How does the use of assistive biomedical technology in children differ from the use of assistive biomedical technology in adults?

Answers

Children and adults are different target groups, and to different target groups the assistive biomedical technology is differently adapted. For children the cognitive devices may aid in classroom learning, while for adults  cognitive devices may aim toward rehabilitation therapy after a stroke.

The use of assistive biomedical technology differs in children than in adults due to the following reason:

Children suffering from disorder like Down syndrome needs help to cope with that is learning how to adjust to the disorder. Adults suffering from this disorder need support to cope up with it, there is very less scope of learning.

Further Explanation:

The main term referred as biomedical technology is a combination of technology and engineering to solve the medical or biological issue in humans. The major difference between the use of the assistive biomedical technology in adults and children is mainly depending upon how the technology is modifying for the use of the particular age group. There are many different types of assessment devices for biomedical technology:

Cosmo-Bot Cosmo’s learning system Stroke rehab glove Tap-tap rehabilitation Learning for children

For example, in children, cognitive devices may assist in classroom learning, on the other hand, for an adult, a cognitive device may focus on the rehabilitation therapy post-stroke. Thus, mainly children require coping up from the disease and adults just require support.

Learn more:

Learn more about carbohydrate monomer https://brainly.com/question/6947177 Learn more about core muscle stabilization https://brainly.com/question/1231927 Learn more about energy storage https://brainly.com/question/523624

Answer Details:

Grade: High School

Subject: Biology

Topic: Assistive Biomedical Technology

Keywords:

Assistive biomedical technology, rehabilitation, support, adult, children, learning, stroke, disease, system, classroom, cognitive device.

Ali was conditioned to blink using an air puff and a tone. the experimenter then presented only the tone until the blink response disappeared. what is ali displaying?

Answers

Ali was displaying the extinction response. The conditioned response (blinking) was only shown to be present along with both the air and the audible tone. When only one of the two stimuli were present, Ali's conditioned behavior was broken, and the blink response vanished.

Both external and organization factors shape internal pay structures.
a. True
b. False

Answers

the answer to yur question is true

The coppice method of regenerating trees is practiced by doing what to all of the trees in a stand at the same time?
a.planting
b.cutting
c.fertilizing
d.watering

Answers

I would Have to say c Cause you're fertilizing A plant

What observations and evidence have jonathan losos and his colleagues gathered to support the theory of natural selection?

Answers

The observation and evidence have Jonathan Losos and his colleagues gathered to support the theory of natural selection is DNA evidence suggests that the different lizard body types (twig, grass, etc.) evolved independently on each of the four large Caribbean islands and also on each of the four large Caribbean islands, Losos observed the same distribution of anole lizard body types.

"thymocyte progenitors enter the subcapsular region of the thymus as double-negative cd3- t cells where the double negative refers to lack of cluster determinants___________ and _________"

Answers

The Thymocyte progenitors enter the subcapsular region of the thymus as double-negative cd3- t cells where the double negative refers to lack of cluster determinants CD4 and CD8. Double-negative cd3- t cells exist as small population that is 1%-5% of lymphocytes in the lymphoid organs and peripheral blood of humans and normal rodents.



Brett ate poisonous wild mushroom, which partially paralyzed his motor unit. his doctor performed an emg test on him and the emg trace is shown above. predict what normal emg from brett could look like?

Answers

Normal EMG should have a larger amplitude because inhibition of the motor unit would lead to less electric signals being generated.
Given that Brett ate a poisonous wild mushroom, his amplitude will be lower since his motor unit has been partially paralyzed. This means that electric signals cannot be properly generated in his body, thus the lower amplitude in the EMG.

Which molecule forms the bulk of a cell membrane? a phospholipid b glucose c dna d protein submit answer?

Answers

Phospholipids are main in membrane

What is meant by suggesting that Earth's oceans are connected?

A. All ocean water came from a single comet that broke into five large pieces.

B.All of the crustal plates underlying the ocean share a border with each other.

C. Water can flow through all five oceans without having to cross a barrier.

D. Water from separate oceans mixes when it flows underneath the continents.

Answers

C seems like the answer because at the end of South America, there's nothing blocking the two oceans there from connecting. All of the oceans are connected together. They're just different because of where they are and the conditions of that area of earth.

I dont' think water flows under the continents either so D doesn't sound right at all. A is just beyond logical because there's no way that has anything to do with how the oceans are connected to each other. B MAY be the answer but I'm leaning more towards C.

Answer: The correct option is C. Earth’s oceans are connected indicates that Water can flow through all five oceans without having to cross a barrier.

Explanation:

Oceans is said to cover around 70% of earths surface and aorudn 97% of earhts water source is found in ocean and seas.  The world ocean is interconnected system of earth oceanic waters.  

It comprises of bulk of hydrosphere. The main oceans are Pacific, Atlantic, Indian ocean, Artic,Southern or Antartica. All these waters are connected without having to cross any land masses.

On the basis of the above explanation is:  

Earth’s oceans are connected indicates that Water can flow through all five oceans without having to cross a barrier.

Which of the following could be considered a benefit of the industrial revolution? A. Increased rate of population growth B. Increased reliance on fossil fuels C. Increased standard of living D. Increased use of groundwater E. Increased energy inputs for agriculture

Answers

The only beneficial option is: C.People had a better standard of living.

Answer: Option C

Explanation:

Industrial revolution can be defined as the time where manual labor was exchanged by machines.

Many machines was set up to produce the products in huge amounts by machines with the use of less cost for raw materials, no cost for labor.

The products were very cheap when compared to handmade products. These products were so cheap that everybody was able to produce it and it increased the standard of living.

Hence, the correct answer is option C

In all eusocial species, sterile workers assist fertile ____ with whom they share genes.

Answers

In all eusocial species, sterile workers assist fertile relatives with whom they share genes.
Any colonial creature species that lives in multigenerational family bunches in which by far most of them participate to help moderately few (or even a solitary) reproductive group members are Eusocial species.

the part of the brainstem that helps to coordinate movements is called the

Answers

The answer is the Cerebellum

Something that disrupts homeostasis is known as a
a. stressor.
b. stress.
c. eustress.
d. distress.

Answers

The answer is A. Stressor

Answer:

homeostatic imbalance is the right one.

Explanation:

is the number of deer on the island a density-dependent or density-independent limiting factor for the wolf ?

Answers

It is density-independent

Answer:

It is density dependent.

Explanation:

Limiting factors, according to ecologists, are those that influence the size of a population. These factors are divided into dependent and independent. Dependent factors are those that influence mortality and birth rates in a population, in which case we can state that the number of moose on an island is a dependent limiting factor for the density of a wolf population.

This is because, wolves feed on moose, if the number of moose is small, the density of the wolf population will decrease because they will have difficulty feeding and consequently die. On the other hand, if the moose population is large, wolves will have abundant food and this will increase the density of the wolf population.

If you observed pathological lung sections, record your observations. also record how the tissue differed from normal lung tissue. complete the table below using your answers.

Answers

Final answer:

Comparing pathological lung sections with normal lung tissue involves identifying unique abnormalities and signs of illnesses such as asthma and pneumonia, which alter the normal structure and function of lungs.

Explanation:

Observing pathological lung sections involves identifying abnormalities in the lung tissue that differ from the normal lung tissue. Normal lung tissue does not have the characteristics of lung tissue during an asthma attack, typified by thickened mucosa, increase in mucus-producing goblet cells, and eosinophil infiltrates. A comparison to normal lung tissue allows for identification of pathological states, such as in asthma or pneumonia.

In the case of pneumonia, lungs may fill with mucus, show shadows in radiographic images, and produce a crackling sound during breathing. Furthermore, hypoxemia, a lower-than-normal level of oxygen in the blood, can be detected which is indicative of lung pathologies.

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What is the importance of the stop codon uag?

Answers

A stop codon is a nucleotide triplet within messenger RNA that signals a termination of translation into proteins. Proteins are based on polypeptides, which are unique sequences of amino acids. Most codons in messenger RNA correspond to the addition of an amino acid to a growing polypeptide chain,The importance of this that "Stop codons signal the termination of this process by binding release factors, which cause the ribosomal subunits to disassociate, releasing the amino acid chain".

The importance of the stop codon UAG lies in its role in protein synthesis within cells. During translation, the process by which messenger RNA (mRNA) is decoded to produce a specific protein, the UAG stop codon serves as a signal to terminate the elongation of the polypeptide chain.

In the genetic code, each set of three nucleotides, called a codon, corresponds to either an amino acid or a stop signal. The UAG codon is one of the three stop codons (the others being UAA and UGA). When the ribosome, which is the machinery that reads the mRNA, encounters the UAG codon, it recognizes this as a termination signal. This triggers the release of the newly synthesized polypeptide chain from the ribosome, effectively ending the translation process for that particular mRNA molecule.

The accurate recognition of stop codons is crucial for the proper functioning of cells. If a stop codon is not recognized, or if it is mutated to encode an amino acid instead, the result can be an abnormally long protein or a nonfunctional one, which can lead to cellular dysfunction and disease.

Moreover, the UAG stop codon has gained attention in the field of synthetic biology. Researchers are exploring ways to repurpose UAG and other stop codons to incorporate non-standard amino acids into proteins, expanding the diversity of protein structures and functions that can be engineered.

In summary, the UAG stop codon plays a critical role in protein synthesis by signaling the end of translation, ensuring that proteins are made with the correct sequence and length, and it holds potential for future applications in the field of genetic engineering.

Suppose when you clap your hands you hear the echo a few seconds later. What can you say about the size of this room?

Answers

It's empty or fairly large, making the sounds from your hands bounce of the walls and therefore having it echo

Answer: The room is bigger than 17.2 meter

Explanation:

The echo can be defined as the sound that is when produced are reflected back back to the ear of the speaker.

The sound that is heard is reflected sound. The minimum distance that is required to produce an echo is 17.2 meters.

By hearing the echo we can conclude that the size of the room must be more than 17.2 meters.

Hence, the correct answer is more than 17.2 meters.

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