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Blababa [14]
3 years ago
6

All cells in an embryo have the same DNA. However, the embryonic cells form organs, such as the brain and the kidneys, which hav

e very different structures and functions. These differences are the result of:_________(1) having two types of cells, one type from each parent(2) rapid mitosis causing mutations in embryo cells(3) new combinations of cells resulting from meiosis(4) certain genes being expressed in some cells and not in others
Biology
1 answer:
pochemuha3 years ago
4 0

Answer:

<h2>certain genes being expressed in some cells and not in others</h2>

Explanation:

The DNA is present in every cell of the multicellular organism but that does not mean that every cell will perform the same function.

The function of the cell is decided during the cell differentiation phase the function of the cell is determined by the expression of specific genes. Expression of these genes controls the functions of the cell.

In the given question the differences in the structure and function of the brain and kidney arise due to different expression of genes in different cells.

Thus, the selected option is the correct answer.

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Phenytoin (sodium channel blocker) and ethosuximide (calcium channel blocker) are anti-seizure drugs that stop seizures from hap
vekshin1

Answer:

Phenytoin and ethosuximide are drugs that slow the recovery of the sodium channel during the inactivated state.

That is to say, they prolong the inactivation state of the channel, thus generating that in this way the neuron remains in resting potential and the action potential causing the epileptic attack is not triggered.

On the other hand, these drugs, according to the bibliography of the book "Golan, 3rd Edition, Principles of Pharmacology" have a use-dependent affect capacity, this means that those sodium channels that have more activity will be more affected, in this way Not only is epileptic shock avoided, but if the same happens independently in any neuron, it will not be able to propagate the action potential to its neighboring neurons, therefore the surrounding neurons will not be stimulated and will not be fulfilled. with the sudden rapid discharges that are the most dangerous in some cases of severe epilepsy.

It is important to understand that these drugs affect the ion channels responsible for exciting neurons, that is why by inhibiting them, a constant rest of these neurons is promoted, and they are unable to generate abrupt discharges and dissemination of the electric charge. among them generating epileptic shocks.

The ions in neurons are in charge of indicating or modulating the different neuronal states, if they are inactive, open or closed, they will directly affect the membrane potential, that is, the positive or negative charge of the neuron's membrane.

Explanation:

In order to finish completing the question, these drugs are excreted through the p450 protein, that is why if this excretion system becomes saturated because another drug is consumed that is excreted in the same way, these antiepileptics will remain longer in use. blood and in the body, generating a greater effect and enhancing adverse effects on the central nervous system.

6 0
3 years ago
HELPPPPPPPPPPPPPPPP<br> HELPPPPP
Gnoma [55]

Answer: 99% sure its 50

Explanation:

5 0
2 years ago
Read 2 more answers
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QveST [7]

Answer:

The correct answer is option A. "A six-point rating system that ranges from exclusively heterosexual to exclusively homosexual orientation".

Explanation:

Alfred Charles Kinsey was a scientific who revolutionized the way sexology was seen and founded the Institute for Sex Research at Indiana University. Kinsey developed what is known as the Kinsey Scale, a six-point rating system that ranges from exclusively heterosexual to exclusively homosexual orientation. The first results of applying the Kinsey Scale were published by Kinsey in 1948 on the book "Sexual Behavior in the Human Male".

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It would be 10,000dg
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MULTIPLE CHOICE QUESTION Asexual reproduction can be efficient and fast. False True​
Anastasy [175]
This is true i believe because it does not involve another individual and all the courting and such involved, nor is there a ‘pregnancy’ period etc;.
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3 years ago
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