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timurjin [86]
3 years ago
9

Compare and contrast pluripotent cells and totipotent cells

Biology
1 answer:
sweet [91]3 years ago
3 0

Answer and Explanation:

In suspension cultures (liquid media), it has been demonstrated that single cells can regenerate to form an entire plant, and undergoes all the natural stages of embryo development.

Totipotent stem cells give rise to all types of cells including the placenta and embryo in animals.Pluripotent cells on the other hand are cells that are capable of self-renewing into the three different germ layers of an embryo forming an adult without giving rise to placenta. As the embryo grows, it develops into multipotent cells.

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Cerebrospinal fluid circulates within the ventricles of the brain and in the subarachnoid space is called
mojhsa [17]

Answer:

Cerebrospinal fluid circulates within the ventricles of the brain and in the subarachnoid space is called Cerebrospinal fluid circulation

Explanation:

CSF is formed within the ventricles by small, delicate tufts of spe­cialized tissue called the choroid plexus

the major pathway of CSF flow. Beginning in the lateral ventricles, CSF flows through two passageways into the third ventricle. From the third ventricle it flows down a long, narrow passageway (the aqueduct of Sylvius) into the fourth ventricle. From the fourth ventricle it passes through three small openings (foramina) into the subarachnoid space surrounding the brain and spinal cord

5 0
3 years ago
1. Ramachandran wants to understand brain functioning. How does he believe that we can better understand how the brain functions
Dvinal [7]
<h2>Answer 1: </h2>

The brain is an astounding three-pound organ that regulates all functions of the body, evaluates information from the outside world, and completes the essence of the mind and soul. Intelligence, creativity, emotion, and memory are some of the many things commanded by the brain.

<h2 /><h2>Answer 2: </h2>

Ramachandran's initial research was on human optical perception applying psychophysical techniques to draw precise inferences about the brain mechanisms holding visual processing. In the early 1990s, Ramachandran began to concentrate on neurological syndromes such as phantom limbs, body integrity personality disorder and the Capgras delusion. He has also added to the understanding of synesthesia and is known for inventing the mirror box.  

<h2 /><h2>Answer 3: </h2>

Among the choice given, being a combination of minds is something that sounds more interesting. It also leads to Ramachandran's study of mirror neurons. In this condition one might be able to think with different perspectives rather than focusing on the one and the intelligence level will also be quite high. Though this seems bit impossible but with the scientific technology it can be be achieved in near future.


<h2>Answer 4:</h2>

déjà vu is a feeling which makes you realise that what you're currently doing has previously happened. However, during this process, there is something your brain is attempting to tell you. Studying deja vu is more interesting as it can make you feel like you've identified someone, or been somewhere, in a past life, though it might be all in your head, according to science.


<h2>Answer 5:</h2>

Capgras delusion is a psychiatric disease in which a person endures a delusion that a friend, spouse, parent, or other close family members (or pet) has been substituted by an indistinguishable impostor. People experience Capgras syndrome by a dilemma within the brain, like atrophy, lesions, or cerebral dysfunction.


<h2>Answer 6:</h2>

A phantom limb is a sensation that an eliminated or missing part is still attached. About 60 to 80% of people with an amputation experience phantom sensations in their separated limb and the majority of the sensations are painful. Ramachandran suggested that phantom limb pain might be generated by changes in the brain — not, as most people thought, in the peripheral nerves near the phantom limb.


<h2>Answer 7:</h2>

After recognising that phantom limb pain started in the brain and that the brain could be remapped — Ramachandran understood he needed to trick patients' brains into unlearning the pain connected with their phantom limbs. He named this phenomenon "learned pain or learned paralysis". Ramachandran found this method useful as he was expert in neuro-department so he thought tricking the brain would be easy.


<h2>Answer 8:</h2>

Synesthesia is a state in which a sensory stimulus done in one modality provokes a sensation in a different modality. Researchers believe a kind of synesthesia exists in all our brains. For instance, we talk of certain smells of particular liquids--like nail polish--as being sweet, even though we have never tasted them. This might include the close neural links and cross activations.


<h2>Answer 9:</h2>

The holy grail of neuroscience is understanding consciousness. In his tedtalk video, Ramachandran talks about how to study the brain? Look at patients with continued damage in the brain. This provides you with a highly selective non-function in one region while other functions are intact. This way you can obtain out what the circuitry is doing.


<h2>Answer 10:</h2>

The brain is formed of the cerebrum, cerebellum, and brainstem.

  • Cerebrum; is the considerable part of the brain. It performs higher duties like interpreting touch, vision and hearing, as well as speech, thinking, emotions, knowledge, and fine control of movement.
  • Cerebellum; is found under the cerebrum. Its purpose is to regulate muscle movements, control posture, and balance.
  • Brainstem; acts as a relay centre joining the cerebrum and cerebellum to the spinal cord. It offers many intuitive functions such as breathing, heart rate, body temperature, wake and sleep cycles etc.

<h2>Answer 11:</h2>

Magicology is casting a spell on the mind. An incredible ability to control minds. Where one can manipulate people to an exceptional degree, drawing their consideration away from something and taking the benefit of that state. But scientists/ researchers consider it to be the best way to understand what's inside a person's brain/mind as they can get answers to all their questions while the patient is hypnotised.


<h3>*REMAINING ANSWERS ARE IN THE ATTACHMENT*</h3>
<h2 />

6 0
3 years ago
How does comparing species genomes show accurate evidence of evolution?
ira [324]

Answer:

DNA and the genetic code reflect the shared ancestry of life.

Explanation:

DNA comparison can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.

8 0
3 years ago
what natural hazard is often caused by human activities and is triggered during and after periods of drought
Gwar [14]

I would say dust storm, From us moving earth.

3 0
3 years ago
Read 2 more answers
Tadpoles must undergo a major metamorphosis to become frogs. This change includes reabsorption of the tail, growth of limbs, cal
nevsk [136]

Answer:

There are many receptors for thyroxine on different target cells (tissues), so its effect can be huge

Explanation:

Target cell for a certain hormone is a cell that have hormone receptor specific for that hormone. There are two main types of receptors on target cell:

  • cell membrane receptors (also called  trans membrane receptors)-usually for peptide hormones, such as insulin
  • intracellular receptors (also called nuclear receptors)-usually for steroid hormones, such as testosterone.

Hormone binding to the receptor leads to the signal cascade within the cell, which results in cell response.

Receptors for thyroid hormones are nuclear receptors.

4 0
3 years ago
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