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icang [17]
3 years ago
5

Which elements have one valence electrons?

Biology
2 answers:
Alinara [238K]3 years ago
5 0
Groups 3-12 (transition metals)
Group 13 (III) (boron group) 3
Group 14 (IV) (carbon group) 4
Group 15 (V) (pnictogens or nitrogen group)
zhuklara [117]3 years ago
4 0

Answer:

Column 1A all have one valence electron.

Explanation:

Look at a periodic table!

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A scientist is comparing the sequences of related genes among three species. Two of the species have very similar sequences, whi
Elena-2011 [213]

Hi. The question you presented above is incomplete. This makes it impossible for this question to be answered. However, when searching for your question on the internet, I was able to find another question exactly like yours, which asked you to explain the evolutionary relationship between these three species. If that's the case for you, I hope the answer below will help you.

In a simplified way, we can infer that among the three species presented above, the third presented a faster evolution than the first two and this is what explains the difference between the gene sequences between the species. As the question presents, the three species have related genes, which indicates that they had a common ancestor, however the difference in the gene sequence of the third species shows that it evolved first, showing changes that cannot be noticed in the first two species that are evolving more slowly.

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3 years ago
Finding common metabolic pathways, such as the tricarboxylic acid (Krebs) cycle, in both prokaryotic and eukaryotic organisms is
Ronch [10]
Answer:
             There are difference in the TCA cycle of both prokaryotes and eukaryotes. In prokaryotes mitochondria is absent of TCA occurs in the cytosol. In eukaryotes it occurs in the mitochondria.
<span>In this pathway, an NADP-dependent enzyme </span><span>catalyzes the dehydrogenation of </span><span>D-threo-isocitrate</span><span> to </span>2-oxoglutarate<span>, while eukaryotes employ an NAD+-dependent enzyme</span><span>. Another difference is that while in most eukaryotes the conversion of </span><span>(S)-malate</span><span> to </span>oxaloacetate<span> is catalyzed only by an NAD-dependent enzyme, p</span><span>rokaryotes that employ this variation of the TCA cycle possess an alternative quinone-dependent enzyme.</span>
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3 years ago
What body cavity is the pituitary gland in?
Gelneren [198K]
I believe the answer is "cranial".
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3 years ago
A pregnant woman has come to the emergency department with complaints of nasal congestion and epistaxis. What is the correct int
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Answer:

It should be noted the options for the question are not complete. But the answer is,

As capillaries become engorged, the upper respiratory tract is affected by the subsequent edema and hyperemia, which causes these conditions, seen commonly during pregnancy.

Explanation:

Nasal congestion is a situation where the nasal passage become blocked. This is due to the swollen of the tiny blood vessel lining the nose. This is because the  blood vessels have been inflamed.

There are many methods which can be adopted to relieve it.Some of them are

* Drinking lots of fluid

* Breathe in steam from a container with warm water

* using vaporizer

* Avoiding chlorinated pools.

Epistaxis is known to be bleeding from the nose. This can be caused by been exposed to dry air, which can cause the damage of the tiny blood vessels.

One of the methods that can be use as treatment is cauterization.  This is the use of chemical swabs to cautirize the nose , and this eventually seals the damaged blood vessels.

This is an emergency situation in a pregnant woman because, it may may reduce the amount of oxygen required by the unborn baby.

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3 years ago
The inside of the barrel-shaped ldl protein consists of ___________ amino acids, while its outside portions in contact with the
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The inside of the barrel-shaped LDL protein consists of hydrophobic amino acids, while its outside portions in contact with the blood fluid consist of hydrophilic amino acids.

LDL is a type of lipoprotein, i.e., it contains protein as well as lipid (cholesterol). The full form of LDL is Low Density Lipid. LDL is considered to be the bad cholesterol for the body. It can cause diseases of the heart like heart attack or stroke.

Amino acids are the essential molecule that act as a monomer for the formation of proteins inside the body. They contain an amino group and  a carboxylic group attached to the same carbon atom. There are also a hydrogen atom and a variable R group attached to the carbon, also called the alpha carbon.

To know more about LDL, here

brainly.com/question/28199215

#SPJ4

4 0
1 year ago
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