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guapka [62]
3 years ago
5

What are two characteristics of a fossil that would make it a good index fossil?

Biology
2 answers:
ch4aika [34]3 years ago
3 0
It is distinctive, widespread, abundant and limited in geologic time. Because most fossil<span>-bearing rocks formed in the ocean, the major </span>index fossils<span> are marine organisms. That being said, certain land organisms are useful in young rocks and in specific regions.</span>
Neporo4naja [7]3 years ago
3 0

Explanation:

The two characteristics of fossil that make it good index fossil are:

  • A good index fossil  is recognizable, widespread and abundant.
  • A good index fossil should be unique and distinctive.

Ammonites are the example of a good index fossil.

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What does Nuclease come from? Like what’s it’s source?
Romashka-Z-Leto [24]

A nuclease (also archaically known as nucleodepolymerase or polynucleotidase) is an enzyme capable of cleaving the phosphodiester bonds between nucleotides of nucleic acids. Nucleases variously effect single and double stranded breaks in their target molecules. In living organisms, they are essential machinery for many aspects of DNA repair. Defects in certain nucleases can cause genetic instability or immunodeficiency.[1] Nucleases are also extensively used in molecular cloning.[2]

Depiction of the restriction enzyme (endonuclease) HindIII cleaving a double-stranded DNA molecule at a valid restriction site (5'–A|AGCTT–3').

There are two primary classifications based on the locus of activity. Exonucleases digest nucleic acids from the ends. Endonucleases act on regions in the middle of target molecules. They are further subcategorized as deoxyribonucleases and ribonucleases. The former acts on DNA, the latter on RNA.[2]

4 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
A water molecule is
avanturin [10]

Answer:

Water is a chemical compound and polar molecule, which is liquid at standard temperature and pressure. It has the chemical formula H2O, meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. Water is found almost everywhere on earth and is required by all known life. About 70% of the Earth's surface is covered by water. Water is known to exist, in ice form, on several other bodies in the solar system and beyond, and proof that it exists (or did exist) in liquid form anywhere besides Earth would be strong evidence of extraterrestrial life.

Explanation:

hope it helps maya

7 0
3 years ago
Read 2 more answers
Explain the benefits and limitations of each type of scientific investigation
Daniel [21]

Answer:


The two main objectives of scientific investigation are knowledge production and hypothesis development. Science uses a wide variety of persons and settings to conduct its investigations. There are numerous methods for conducting scientific research, all of which rely on the collection of various types of data.

Human error can occur when measurements are made improperly or when observations are incorrectly recorded. Scientific fraud is the term for deliberate data manipulation. Bias, or prior conviction that the hypothesis is correct or false, can have an impact on the accuracy of observation and the interpretation of data.

Explanation:

I paraphrased this for you (Not plagiarized).

3 0
1 year ago
A problem that frustrates attempts to organize the entire living world for study: we don't know how many separate __________ of
solniwko [45]
The usual problem that would frustrate attempting to organize entire world for the study is we do not know how many separate species of life forms that usually would exist on this planet. Hope this is the correct answer and this would help.
5 0
3 years ago
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