Question

question 1

which of the following is not true about cells?

• cells are the smallest unit of life.
• all cells have nuclei.
• all cells have metabolism.
• cells come from other living cells.

question 2

what is the total magnification used to view onion cells through a microscope if the eyepiece magnification is 10x and the objective lens magnification is 40x?

• 400x
• 10x
• 50x
• 40x

Explanation:

Analyze cell theory statements

The first question asks which statement is NOT true about cells.

• "Cells are the smallest unit of life" is a core tenet of cell theory.
• "All cells have nuclei" is false because prokaryotic cells (bacteria and archaea) lack a membrane-bound nucleus.
• "All cells have metabolism" is true as all living cells perform metabolic processes.
• "Cells come from other living cells" is another core tenet of cell theory.

Therefore, the incorrect statement is "All cells have nuclei."

Calculate total microscope magnification

The second question asks for the total magnification given:

• Eyepiece magnification = \(10\text{x}\)
• Objective lens magnification = \(40\text{x}\)

The formula for total magnification is:

$$ \text{Total Magnification} = \text{Eyepiece Magnification} \times \text{Objective Lens Magnification} $$

$$ \text{Total Magnification} = 10 \times 40 = 400\text{x} $$

Answer:

Question 1

• Cells are the smallest unit of life.
• All cells have nuclei. (Correct answer)
• All cells have metabolism.
• Cells come from other living cells.

Question 2

• 400x (Correct answer)
• 10x
• 50x
• 40x