Year 10 Biology

biotech, genetics, DNA replication etc.

Fill in the blank: DNA stands for _________ acid.

Deoxyribonucleic acid

Question: What are the two models of DNA proposed?

The Watson-Crick double helix model and the anti-parallel model.

Fill in the blank: The process of DNA replication involves unwinding the DNA and using _________ to synthesize new strands.

DNA polymerase

Question: What is the role of helicase in DNA replication?

Helicase unwinds and separates the double-stranded DNA.

Fill in the blank: The nitrogenous bases in DNA are adenine, thymine, cytosine, and _________.

guanine

Question: What is the significance of the 5' to 3' direction in DNA replication?

DNA strands are synthesized in a 5' to 3' direction, and this determines the directionality of the new strand being formed.

Fill in the blank: Mutations in DNA can lead to changes in _________.

phenotypes or traits

Question: What techniques are commonly used in biotechnology to manipulate DNA?

Techniques such as CRISPR, PCR (Polymerase Chain Reaction), and gel electrophoresis.