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3 years ago

Which aspect of the nebula hypothesis accounts for the planets orbiting in the same direction and plane?

Biology

2 answers:

Amanda [17]3 years ago

5 0

The aspect of the nebula hypothesis which accounts for the planets orbiting in the same direction and plane is :

The collapsing gas and dust cloud began to spin and form a disk.

Explanation:

The third, the disk instability method, may account for the creation of giant planets. Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula.
Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula.
When it comes to the formation of our Solar System, the most widely accepted view is known as the Nebular Hypothesis.
In essence, this theory states that the Sun, the planets, and all other objects in the Solar System formed from nebulous material billions of years ago.
It is believed that all the planets of the solar system were formed at the same time from a nebula cloud, 4.5 billion years ago.
Something happened that caused the cloud to collapse but then the cloud was collapsed gravitationally at the end of the cloud.

sergeinik [125]3 years ago

3 0

Answer:

The collapsing gas and dust cloud began to spin and form a disk

Explanation:

I did the test, k12

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lesantik [10]

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3 years ago

A) In how many cases in the genetic code would you fail to know the amino acid specified by a codon if you knew only the first t

Vesna [10]

Answer:

a) 28 cases

b) 3 cases

Explanation:

a) From the table of genetic codes, there are 28 codons that specify more than one amino acid assuming only the first two nucleotides are considered. In these cases, one cannot outrightly specify the amino acid the genetic codes are coding for without knowing the last nucleotide of the codes. For example, UU can be for Phenylalanine or Leucine, CA can be for Histidine or Glutamine, etc.

b) From the table of genetic codes, the first two nucleotides of Arginine can be either of CG or AG, that of Serine can be either of UC or AG while that Leucine can be either of CU or UU. Only in these 3 cases would one fail to know which are the first two nucleotides assuming the name of the amino acids are given.

See the attached image for the genetic code.

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2 years ago

6. Factors that increase the amount of mutations are called ....

quester [9]

Answer:

Acquired mutations occur at some time during a person's life and are present only in certain cells, not in every cell in the body. These changes can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if an error is made as DNA copies itself during cell division.

Explanation:

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2 years ago

Proteus vulgaris has a doubling time of roughly 28 minutes. If an initial population of 500 cells is allowed to grow for 6 hours

romanna [79]

Answer: The final population of Proteus vulgaris after 6 hours is $3.71\times 10^{6}cells$

Explanation:

We are given:

Proteus vulgaris divides and doubles every 28 minutes

Total time given = 6 hours = 360 min (Conversion factor: 1 hr = 60 min)

Number of times Proteus vulgaris doubles in 6 hours = $\frac{360min}{28min}=12.857times$

Calculating the number of bacteria after 6 hours under ideal conditions:

We are given:

Initial population = 500 cells

Number of times it doubles = 12.857 times

Final Proteus vulgaris population = $500\times 2^{12.857}=3709476.8=3.71\times 10^{6}cells$

Hence, the final population of Proteus vulgaris after 6 hours is $3.71\times 10^{6}cells$

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2 years ago

Which of the following statements is false?

katrin2010 [14]

Answer B is false. An element is a type of atom and you do not need to combine two atoms to get a specific element. Combining two atoms will leave you with a compound not an element.

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2 years ago