A cellular structure that is visible with an electron microscope but not with a light microscope is:. 1. a mitochondrion.
2. a ribosome.
3. a chloroplast.
4. a nucleus.

The ribosome will not be visible with a light microscope

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: