1. Structure and Function of Biological Macromolecules
DNA: The structure of DNA is a double helix made of nucleotides. It stores
genetic information, and its replication is a crucial process in cell division.
Proteins: Proteins are made of amino acids and perform a variety of
functions, including enzymatic activity, structural support, and signal
transmission.
RNA: RNA is involved in the transcription process (copying DNA into mRNA)
and translation (mRNA to protein synthesis) in cells.
2. The Cell Cycle and Cell Division
Interphase: Comprises the G1, S, and G2 phases. During the S phase, DNA
replication occurs.
Mitosis: The process by which a cell divides its chromosomes into two
daughter cells. This process is tightly regulated to ensure accurate genetic
material distribution.
Meiosis: A specialized type of division that reduces chromosome numbers by
half, leading to the formation of gametes (sperm and egg cells).
3. Protein Synthesis: Transcription and Translation