Question

question 9

a student wants to view cells under the compound microscope at a total magnification of 40x. if the eyepiece is 10x, which of the following objective lenses should be used?

• 40x
• 100x
• 10x
• 4x

question 10

scientists now know that all cells contain dna. which type of technology contributed to the development of this part of the cell theory?

• computers
• microscopes
• telescopes
• centrifuges

Explanation:

Calculate objective lens magnification

Using the Microscope Magnification knowledge point

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Identify technology contributing to cell theory

Using the Cell Theory knowledge point

• Cell theory development relied heavily on visualizing microscopic structures.
• Microscopes allowed scientists to discover cells, organelles, and cellular components like DNA.
• Therefore, microscopes are the primary technology that contributed to this development.

Answer:

Question 9

• (A) 40x
• (B) 100x
• (C) 10x</mcq-correct>
• (D) 4x (Correct answer)

Question 10

<mcq-option>(A) Computers

• (B) Microscopes (Correct answer)
• (C) Telescopes
• (D) Centrifuges