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sasho [114]
3 years ago
11

If four cells are visible within the field of view at the fields's maximum diameter when the total magnification is 200X, how ma

ny of these cells will be visible at a total magnification of 500X?
Biology
1 answer:
pychu [463]3 years ago
6 0

Answer:

2.67 cells at 500x magnification...

Explanation:

So, four cells are present at 200x magnification and are covering the full diameter of lens. by using a 500x magnification, it means that magnification is increased 1.5 times. So, the number of cells visible will be decreased by a factor of 1.5. So, decreasing 4 cells by a factor of 1.5 means <em>2.66666666667</em> or <em>2.67</em> cells at 500x magnification. Resolution has to be increased by a factor of 1.5 to produce a view-able clear image of cells.

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using the gas pedal analogy explain the impact on the cell cycle of a proto-oncogene versus an oncogene
rusak2 [61]

Using the gas pedal analogy, the proto-oncogene would be an accelerator since they promote cell division and deregulate apoptosis, while tumor suppressor would be the brakes since they constrain the progress of the cell cycle and induce cell apoptosis. An oncogene is, therefore, when the accelerator is stuck in down position and the brakes are not working.






3 0
3 years ago
Scientists use DNA sequencing to understand relationships among life on Earth. The chart illustrates differences between five sp
OlgaM077 [116]

Answer:

With respect to the differences in the DNA sequence of six species, including the human one, it is true that the DNA sequences may vary but the aminoacid sequences are identical.

Explanation:

Options for this question:

  • <em>The DNA sequences may vary but the amino acid sequences are identical. </em>
  • The nitrogen bases in the nucleotides must also be different in each.
  • The process in producing additional DNA, replication, is identical in all six.
  • The process of producing DNA, or replication, varies due to the differences in the DNA codes.

The different species that exist have specific genomes for each of them, this is the <u>genetic information contained in the DNA varies from one species to another</u>, as can be seen in the scheme (see image). However, the genetic code is universal, and does not vary from one species to another.

The genetic code is found in the RNA molecule and is a sequence of nucleotides that, organized in triplets (codons), are responsible for the synthesis of specific amino acids. An RNA molecule contains the information necessary for protein synthesis.

The scheme shows the differences of five species with respect to the human, based on the respective DNA sequences. But what it does not show is a universally accepted truth, that the nucleotide sequence encoding an amino acid is the same for each of these species.

Learn more:

Genetic code brainly.com/question/15338

3 0
3 years ago
In what year was the prokaryotic cell discovered?
Step2247 [10]

Answer:

1937

Explanation:

5 0
3 years ago
HELP ASAP PLEASE!!!
bazaltina [42]

B. How far do butterflies migrate

A, C and D are opinions not facts.

4 0
3 years ago
Read 2 more answers
which hormone influences a person's rate of metabolism? a. PTH b. aldosterone c. thyroxine d. calcitonin
Vesna [10]
<span>
c. thyroxine </span><span>The thyroid releases too much of the hormone thyroxine, which increases the person's basal metabolic rate.</span>
7 0
3 years ago
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