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OlgaM077 [116]
3 years ago
10

Compare the modern Cell Theory to the original Cell Theory

Biology
1 answer:
CaHeK987 [17]3 years ago
6 0
The statements of the old cell theory are:
1. All organisms are composed of cells
2. The cell is the basic unit of life
3. Cells are produced from existing cells

The modern cell theory's statements are:
1. The cell contains hereditary information which is passed to daughter cells
2. All cells are basically the same in composition and activity
3. All basic functions occur in cells
4. Cell activities depend on intracellular structures

As is visible from the statements, the old cell theory was not as detailed and lacked the understanding of the function, structure and behavior of cells that the current theory possesses. This difference has come about after years of research, through which scientists understood the functions of cells and elaborated on the theory's statements.
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A ship sonar detects an echo 1.6s after it sends the pluse.The speed of sound in water in 1500mls work out how deep the water is
yaroslaw [1]

Answer:

1200m

Explanation:

Let the depth of sea be x.

Given that the sound has to travel to the bottom of the sea and get reflected back to the ship itself, thus total distance traveled by the sound is 2x.

Time taken to hear an echo t=1.6 s

Therefore, 2x = vt

Hence, we have 2x =1500m/s × 1.6s

=> 2x = 2400

⟹ x = 2400 ÷ 2

= 1200m

Hence, the final answer is 1200m

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