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levacccp [35]
3 years ago
15

How did the kingdoms went from 2-6

Biology
1 answer:
Makovka662 [10]3 years ago
3 0

Initially, when scientists were first using the taxonomy system to classify living organisms there were only considered to be 2 kingdoms: plants and animals. However, when the microscope was invented, scientists were able to observe differences in organisms at the cellular level! They were also able to observe microscopic living organisms like bacteria that they had not been able to observe before. Scientists realized it was necessary to add 4 new kingdoms to account for the observations they had not seen before the invention of the microscope.

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The smallest contractile unit within skeletal muscle would correspond to the distance between which two points in the figure?
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The distance between 1 and 7 spans a sarcomere correspond the structure at B is covered by the perimysium.

<h3>What is the smallest contractile unit within skeletal muscle?</h3>

A sarcomere comprises the segment between two consecutive Z lines and is the contractile unit of the muscle fiber, as it is the smallest portion of the muscle fiber capable of contraction and distension.

In this case, the distance between points 1 and 7 has the smallest structure of a skeletal muscle and corresponds to figure B.

See more about sarcomere at brainly.com/question/14005497

#SPJ12

5 0
2 years ago
What is common to both prokaryotic and eukaryotic cell division?
castortr0y [4]

Answer:

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Explanation:

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3 years ago
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Igoryamba

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a pH meter is the correct answer

Explanation:

i just did the test

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