DNA and Protein Synthesis Test

Front

What is the role of DNA in cells?

Back

DNA contains the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms and many viruses.

Front

What is RNA and how does it differ from DNA?

Back

RNA (Ribonucleic Acid) is a single-stranded molecule that plays a crucial role in protein synthesis. Unlike DNA, RNA contains uracil (U) instead of thymine (T) and has ribose sugar instead of deoxyribose.

Front

What is the function of uracil in RNA?

Back

Uracil pairs with adenine during RNA synthesis, replacing thymine found in DNA.

Front

Who are Watson and Crick?

Back

James Watson and Francis Crick are scientists known for discovering the double helix structure of DNA.

Front

What is the significance of X-ray diffraction in DNA research?

Back

X-ray diffraction was used to determine the helical structure of DNA, revealing its twisted shape.

Front

What does 'semi-conservative' mean in the context of DNA replication?

Back

Semi-conservative means that during DNA replication, each new DNA molecule consists of one original strand and one newly synthesized strand.

Front

What are complementary strands in DNA?

Back

Complementary strands refer to the pairing of nucleotides in DNA, where adenine pairs with thymine and cytosine pairs with guanine.

Front

What is the meaning of the suffix '-ase'?

Back

The suffix '-ase' indicates that a molecule is an enzyme.

Front

What is the structure of a DNA double helix?

Back

A DNA double helix consists of two strands that wind around each other, with a sugar-phosphate backbone and nitrogenous bases paired in the center.

Front

What are purines and pyrimidines?

Back

Purines (adenine and guanine) are double-ringed structures, while pyrimidines (cytosine, thymine, and uracil) are single-ringed structures in nucleic acids.