E MULTIPLE CHOICE QUESTION Where can ribosomes be found in a cell? Only floating in the cytoplasm Both floating in the cytoplasm and attached to the ER (endoplasmic reticulum) Ribosomes can't be found in eukaryotic cells Only attached to the ER (endoplasmic reticulum)

## Step 1<br />Ribosomes are the sites of protein synthesis in cells. They can be found in two places within a cell.<br /><br />## Step 2<br />The first place is floating freely within the cytoplasm. These are referred to as "free" or "cytoplasmic" ribosomes.<br /><br />## Step 3<br />The second place is attached to the endoplasmic reticulum (ER). When ribosomes are attached to the ER, they are referred to as "bound" or "attached" ribosomes.<br /><br />## Step 4<br />The option "Ribosomes can't be found in eukaryotic cells" is incorrect because ribosomes are present in both eukaryotic and prokaryotic cells.<br /><br />## Step 5<br />The option "Only attached to the ER (endoplasmic reticulum)" is also incorrect because, as mentioned, ribosomes can also be found floating freely in the cytoplasm.