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Andrew [12]
2 years ago
15

Oh and did u know that Typically in mammals, the gender of an organism is determined by the sex chromosomes. In the case of huma

ns, this happens to be the X and the Y chromosomes. So as you may recall, if you are XX, you are female. If you are XY, you are male. And in the case of other mammals, this is often similar, although they may have different names for those chromosomes as well. What's really interesting is that you have a large discrepancy in the size of these two chromosomes, with the X chromosome being much larger than the Y chromosome. They also carry distinctly different genes. And what's also very fascinating about this is, I don't think it's really been determined exactly what it is on each of those chromosomes that make someone male or female in particular. It's kind of a combination of many of those genes. In fact, the sex chromosomes are quite interesting, not just because of what they cause or what their role is, but also because they're so different from the other chromosomes that we have in the complete human genome.
Chemistry
2 answers:
Hatshy [7]2 years ago
4 0

Answer: i did know that, but thank you a lot

Explanation:

krek1111 [17]2 years ago
4 0
I didn’t know that, thanks for sharing!
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A mixture of nitrogen gas and oxygen gas has a total pressure of l.13 atm. If the partial pressure of oxygen is 0.43 atm, what i
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0.70

I hope this is help, I’m so so sorry if I’m incorrect
8 0
3 years ago
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How do chemical and nuclear reactions differ in(c) Effect on rate of higher reactant concentration?
DochEvi [55]

Nuclear reactions involve a change in an atom's nucleus, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei.

<h3>What affects the rate of nuclear reactions?</h3>

Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

<h3>What is the main difference between chemical reactions and nuclear reactions?</h3>

Chemical reaction normally occurs outside the nucleus. Nuclear reaction happens only inside the nucleus. When chemical reactions occur elements hold their identity and the nuclei of atoms also remains unchanged. During nuclear reactions, the nuclei of atoms changes completely and new elements are formed.

Learn more about chemical reaction here:

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7 0
1 year ago
Which of these statements is not true about chemical reaction rates
grin007 [14]

Answer: The statement (B) is not true about chemical reactions.

Explanation:

A chemical reaction rate is affected by the several factors few of which are temperature, concentration of reactants, surface area etc.

In a chemical reaction, if temperature is increased then the rate of reaction will increase because it will increase the average kinetic energy of the reactant molecules. Thus, large number of molecules will have minimum energy required for an effective collision.

It is known that increasing the amount of reactants will increase the rate of reaction.

Therefore, rate of reaction will change if concentration or temperature is changed.

Hence, the statement (B) is not true about chemical reactions.

6 0
3 years ago
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I really need help with this does anybody know how to do this?​
fenix001 [56]

Answer:PLEASE MARK BRAINIEST

The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy. Today, this process uses instruments with a grating that spreads out the light from an object by wavelength. This spread-out light is called a spectrum. Every element — and combination of elements — has a unique fingerprint that astronomers can look for in the spectrum of a given object. Identifying those fingerprints allows researchers to determine what it is made of.

That fingerprint often appears as the absorption of light. Every atom has electrons, and these electrons like to stay in their lowest-energy configuration. But when photons carrying energy hit an electron, they can boost it to higher energy levels. This is absorption, and each element’s electrons absorb light at specific wavelengths (i.e., energies) related to the difference between energy levels in that atom. But the electrons want to return to their original levels, so they don’t hold onto the energy for long. When they emit the energy, they release photons with exactly the same wavelengths of light that were absorbed in the first place. An electron can release this light in any direction, so most of the light is emitted in directions away from our line of sight. Therefore, a dark line appears in the spectrum at that particular wavelength.

Explanation:

8 0
3 years ago
How many moles of hydrogen are needed to produce 13.78 mol of ethane?
mamaluj [8]
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3 years ago
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