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bija089 [108]
3 years ago
6

Could life as we know it exist on earth if air contained only oxygen

Biology
1 answer:
xxTIMURxx [149]3 years ago
7 0
No because of water evaporates and the cumebous and unbous layers take in the vapperation of the water that humans use and other plants and animals. so no 
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Now that you have come up with an equation that describes the relationship between amounts of different nucleotide bases in DNA,
Colt1911 [192]

Answer:

G=21 %

T= 29 %

A= 29 %

Explanation:

Since C only binds to G, you have the same amount of C and G, so G is 21 %.

100 % minus 42 % ( 21 % C plus 21 % G=) equals 58 %.

So the other 58 % is made of T and A. Since T only binds to A , the half of the extra 58 % is T and the other half is A. Therefore 29 % is T and 29 % is A

4 0
3 years ago
A eukaryotic chromosome consists of _____
sergey [27]

A eukaryotic chromosome consists of histones.

<h3>Properties of eukaryotic chromosome</h3>

Eukaryotes posses pairs of linear of chromosomes and they are all contained in the nucleus of the cell, possessing characteristic forms.

Eukaryotic chromosomes consists of histones which are condensed and DNA surrounding nuclear proteins.

Therefore, a eukaryotic chromosome consists of histones.

Learn more about eukaryotic chromsomes here:

brainly.com/question/19661895

#SPJ11

6 0
2 years ago
Explain why a hydrogen atom can become either an ion or a part of molecule?
NikAS [45]

<span>If it loses that 1 electron (0 electrons, 1 proton, 1 neutron) it become an ion that is positively charge because it has more protons than electrons. [Ignore the neutrons] </span>

<span>If it gains an electron (2 electrons, 1 proton, 1 neutron) it becomes an ion that is negatively charge because it has more electrons than protons </span>

<span>A molecule - when 2 or more "different" elements combine or when 2 or more of the "same" elements combine </span>

<span>1 proton 1 electron <----- that is considered to be neutral </span>

<span>3 protons, 3 electrons <----- neutral </span>

<span>5 protons 5 electrons <----- neutral </span>

<span>6 protons, 5 electrons <-- positive ion [more protons than electrons] </span>

<span>5 protons, 8 electrons <--- negative ion [more electrons than protons] </span>
8 0
3 years ago
Joy has a DNA sample from each of five unknown animals. She wants to find the molecular mass of each sample to determine which s
murzikaleks [220]
Answer is B since it uses strains and differential transformation to see
3 0
3 years ago
How can DNA bases pair up
amm1812

Answer:

via hydrogen bonds; there are two between adenine and thymine and three between cytosine and guanine

8 0
3 years ago
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