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Dafna1 [17]
4 years ago
13

Scientists interested in early life on Earth including the first cells and the last universal common ancestor of all three domai

ns of life are likely to get the most information from:
a. sis of two amino acids, forming a peptide bond with the release of water
b. the reaction of two monosaccharides, forming a disaccharide with the release of water
c. the reaction of a fat with glycerol, forming fatty acids with the release of water
d. the reaction of a fat, forming glycerol and fatty acids with the consumption of water
Chemistry
1 answer:
jonny [76]4 years ago
7 0

Answer: A. sis of two amino acids, forming a peptide bond with the release of water

Explanation: Molecule Evolution is a term used to explain the changes that has taken place as organisms evolve from one generation to the next.Molecular evolution is connected with the Amino acid sequence and synthesis as every ancestor of man have certain closely related or changes which must have caused evolution to take place. the formation of peptide bonds from amino acids with the release of water is the closest option Scientists can use to explain the evolution of man.

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Arrange the following units in decreasing order: nm,km,pm,Dm,mm,m,cm,hm,gm
goblinko [34]

The units are nm (nano-meter), km (kilo-meter), pm (pico-meter), dm (decimeter), mm (millimeter), m (meter), cm (centimeter), hm (hectometer) and gm (gigameter). Now we can express each of these units in terms of m.

1 nm = 10^{-9}m, 1 Km = 10^{3}m 1 pm = 10^{-12}m, 1 dm = 0.1 m, 1 mm = 0.001 m, 1 cm = 0.01 m, 1 hm = 100 m, 1 gm = 10^{9} m. Thus the decreasing unit will be

gm>km>hm>m>dm>cm>mm>nm>pm      

3 0
3 years ago
A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hy
Dahasolnce [82]

This problem is providing a comparison on the atoms forming formaldehyde, CH₂O, in terms of the groups they are in, C in group 4A, O in group 6A and H in group 1A, and it is asking for a description about the bonds once they are bonded in a formal Lewis dot structure.

In such a way, the attached file shows the Lewis dot structure, in which we can find two bonds between the two hydrogen atoms and the carbon one, and also, a double bond between carbon and oxygen.

The aforementioned is explained by bearing to mind the concept of octet, which states that elements in groups 4A, 5A, 6A and 7A are able to complete 8 valence electrons after bonding.

Thus, since carbon is in group 4A we infer it needs 4 more electrons to complete the octet, and that is achieved due to the 4 bonds it is having with the two hydrogen atoms and double bond with the oxygen atom.

In addition, since oxygen is in group 6A, we infer it needs two more electrons to complete its octet, which is attained via the double bond it has with the carbon atom. For hydrogen, however, it can complete one bond at maximum, because it is in group 1A, which means it can complete two valence electrons after bonding.

Learn more:

  • brainly.com/question/10535983
  • brainly.com/question/21089350

4 0
3 years ago
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Fittoniya [83]
I’m paying people to help me on mine if you know mine I can pay you a good amount of money if it’s right I have Apple Pay,cashapp,PayPal,Venmo
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3 years ago
A gas may dissolve in a liquid. True False
mash [69]
The answer is False. Hope this helps!!!
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3 years ago
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finlep [7]

Answer:

A) He is in a cold area.

Explanation:

I dont know it is just normal for your hairs to do that in the cold weather.

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3 years ago
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