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ankoles [38]
2 years ago
5

Which of the following is the best definition of a scientific theory?

Biology
2 answers:
denis-greek [22]2 years ago
8 0

B, because a scientific theory is not yet proven.

Alex73 [517]2 years ago
8 0

The correct answer is option B

The scientific theory can be defined as the phenomenon that is related to the natural world and repeatedly tested according to the scientific methods and recorded the measurements and the evaluation of results under the controlled conditions( if possible).

This is done based on scientific methods.

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A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 4 picograms of DNA
damaskus [11]

Answer:

b: 8;8

Explanation:

Mitotic or meiotic cell division constitute the m phase of the cell cycle. At the end of the m phase, the new cells enter the interphase stage of the cell cycle. The interphase is further sub-divided into;

  • <em>the G_0 phase,</em>
  • <em>the G_1 phase,</em>
  • <em>the S phase; and</em>
  • <em>the G_2 phase</em>.

The G_0 phase is essentially a resting phase. Cells that do not need to divide except when necessary move into this phase after exiting the m phase.

Actively dividing cells enter the G_1 phase after exiting the m phase. Cell development and growth takes place. From there, the cells enter the S phase where DNA replication/synthesis takes place. The cells then enter the G_2 phase where proteins are synthesized in preparation for division or m phase.

At the S phase, the amount of DNA a cell carries is doubled but the chromosome number remains the same. For example, if a cell enters the S phase with 2 g of DNA containing 10 chromosomes, at the end of S phase, the amount of DNA would have come 4 g while the number of chromosomes will remain 10.

Hence, if the average amount of DNA in the assayed cells immediately after mitosis is 4 picograms, the amount would be 8 picograms at the end of S phase and will still remains 8 picograms at the end of G_2 phase.

The correct option is b.

8 0
2 years ago
What is one difference between oogenesis and spermatogenesis?
il63 [147K]

Answer:

The answer that you want to pick is

A-Oogenesis occurs in females, but spermatogenesis occurs in males.

Explanation:

Think about how babies are made you need a male and a female.

8 0
2 years ago
Read 2 more answers
Choose the sentence that best explains the importance of setting goals and sharing them with others.
ValentinkaMS [17]
A. You improve your health by setting as many goals as you can
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D. Parasitic will be you answer.
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What theory did Pasteur disprove by using boiled beef broth and a flask with S shaped tubing
Sonbull [250]

cells came from nonliving things.

5 0
2 years ago
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