Which structures could most likely be observed in cells in the low-power field of a compound light microscope?

Question

1) cell walls and chloroplasts
2) ribosomes and endoplasmic reticula
3) lysosomes and genes
4) nucleotides and mitochondria

Answer 1

I'd go with 1, since both of those are easily large enough for a light microscope.

In case you're interested in how I got there:
For choice 2, the ER should be visible but not ribosomes. In choice 3, neither are visible in a light microscope. For choice 4, the mitochondria are visible but not nucleotides (waaay too small for even a really good light microscope).

Answer 2

1) Easily visible
2)Ribosomes are too small for visible light to resolve as it's wavelength is too large. With a optical microscope ER and Rough ER would likely look almost identical.
3)Lysosome are small vacuoles full of lysozymes and are by far too small to resolve on an optical microscope. Genes are part of a large DNA structure. The chromosomes, containing DNA, would be visible with an optical microscope during meiosis and mitosis.
4)The nucleotides are small molecules and thus you'd have a hard time detecting them with an electron microscope, let along an optical microscope. Mitochondria can vary in size but would likely be somewhat visible.

Answer 3

number 1- cell walls and chloroplasts.

Answer 4

1 - definitely
2 - ribosomes - maybe located as bumps on the rough ER as u say
3 - definitely not
4 - mitochondria..yes, nucelotides, no

Answer 5

1. Cell walls and chloroplasts are the only parts on this list that you could see with low power.