(todo 3.1B-10B) Reproduction, DNA and Protein Synthesis - Paper 1 Flashcards
1
Q
Explain advantages of asexual reproduction.
A
2
Q
Explain disadvantages of asexual reproduction.
A
3
Q
Explain advantages of sexual reproduction.
A
4
Q
Explain disadvantages of sexual reproduction.
A
5
Q
Explain the role of cell division by meiosis.
A
Meiosis produces 4 haploid daughter cells with half as many chromosomes as the diploid parent cell.
6
Q
Describe the structure of DNA.
A
- DNA is a polymer.
- Two strands coil to form a double helix.
- Complementary base pairs connect the strands by weak hydrogen bonds.
- Each nucleotide has a base, a deoxyribose sugar and a phosphate group.
7
Q
Define a genome.
A
A genome is the entire DNA of an organism.
8
Q
Define a gene.
A
A gene is a section of a DNA molecule
