A) Ribosomes and centriole are non-membrane bound organalles of a cell.
B) Ribosomes are enveloped by a double membrane.
C) Plasmadesmeta are the cytoplasmic connections between cells.
D) Cell membrane is semi-permeable or selectively permeable.
Correct Answer: B
Solution :Ribosomes are large and complex molecular structure, found within all living cells. They lack membrane boundaries. They serve as the site of biological protein synthesis (translation). A ribosome is made from complexes of RNAs and proteins and is therefore a ribonucleoprotein. -
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