Biology

General

Easy

Question

A are granular structures first observed under electron microscope as dense particles by …B… (1953). Here, A and B refer to

A-Ribosomes; B-Perner

A-Lysosomes; B-de Duve

A-Peroxisomes; B-Flemming

A-Ribosomes; B-George Palade

A-Ribosomes; B-Perner

A-Lysosomes; B-de Duve

A-Peroxisomes; B-Flemming

A-Ribosomes; B-George Palade

## The correct answer is: A-Ribosomes; B-George Palade

### J D Watson and F H C Crick (1953) showed that DNA has a double helical structure with two polynucleotide chains connected by hydrogen bonds and running in opposite directions (antiparallel). The antiparallel strands of a DNA molecule means that the phosphate groups at the start of two DNA strands are in opposite position (pole).

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