Biology 12 AP/IB courses
Here’s a simple guide to help you organize your Grade 12 Biology studies!
For each unit, focus on the important concepts, processes, and key terms
you need to understand. This will help you connect the dots and remember
the essential stuff, remember to quiz yourself and review! :)
Unit 1: Cell Biology
Things to Be Aware Of:
Difference Between Prokaryotic and Eukaryotic Cells: Understand the structural and
functional differences, especially in organelles.
Structure of the Plasma Membrane: Learn about the fluid mosaic model, where
phospholipids, proteins, and cholesterol interact to maintain membrane flexibility and
function.
Endoplasmic Reticulum (ER): Know the difference between rough ER (with
ribosomes, involved in protein synthesis) and smooth ER (involved in lipid production
and detoxification).
Mitochondria vs. Chloroplasts: Both involved in energy conversion, but one in animal
cells and the other in plant cells (photosynthesis).
Types of Transport: Focus on the mechanisms of diffusion, osmosis, and active
transport (including the sodium-potassium pump).
Phases of Cell Division: Pay particular attention to the stages of mitosis and meiosis and
how they differ in terms of genetic outcomes.
Key Things to Take Notes On:
Phases of Mitosis and Meiosis: Know the sub-stages (e.g., prophase, metaphase,
anaphase) and key events (e.g., chromosome alignment in metaphase).
Membrane Proteins and Transport: The role of carrier proteins and channel
proteins in transport across membranes.
ATP Production: Understand how mitochondria generate ATP via the electron
transport chain and ATP synthase.
Genetic Variation in Meiosis: Be clear on how crossing over and independent
assortment lead to genetic diversity.
, Unit 2: Genetics
Things to Be Aware Of:
Mendelian Inheritance: Understand dominant, recessive, homozygous, and
heterozygous traits, and how to calculate inheritance patterns using Punnett squares.
Gene Expression: Be aware of the process of transcription (DNA to RNA) and
translation (RNA to protein), and how codons and anticodons work.
Mutations and Their Effects: Learn the different types of mutations (point mutations,
insertions, deletions) and their potential impact on proteins.
Incomplete Dominance and Codominance: Be aware of genetic cases where one allele
doesn't completely dominate the other.
Key Things to Take Notes On:
Punnett Square Applications: Take note of examples that involve monohybrid and
dihybrid crosses.
Types of Mutations: Understand how frameshift mutations affect the protein sequence
versus point mutations.
Transcription and Translation Processes: Take detailed notes on the steps of protein
synthesis and the role of ribosomes and tRNA.
Genetic Disorders: Examples of genetic disorders (e.g., cystic fibrosis, sickle cell
anemia) and how they are inherited.
Here’s a simple guide to help you organize your Grade 12 Biology studies!
For each unit, focus on the important concepts, processes, and key terms
you need to understand. This will help you connect the dots and remember
the essential stuff, remember to quiz yourself and review! :)
Unit 1: Cell Biology
Things to Be Aware Of:
Difference Between Prokaryotic and Eukaryotic Cells: Understand the structural and
functional differences, especially in organelles.
Structure of the Plasma Membrane: Learn about the fluid mosaic model, where
phospholipids, proteins, and cholesterol interact to maintain membrane flexibility and
function.
Endoplasmic Reticulum (ER): Know the difference between rough ER (with
ribosomes, involved in protein synthesis) and smooth ER (involved in lipid production
and detoxification).
Mitochondria vs. Chloroplasts: Both involved in energy conversion, but one in animal
cells and the other in plant cells (photosynthesis).
Types of Transport: Focus on the mechanisms of diffusion, osmosis, and active
transport (including the sodium-potassium pump).
Phases of Cell Division: Pay particular attention to the stages of mitosis and meiosis and
how they differ in terms of genetic outcomes.
Key Things to Take Notes On:
Phases of Mitosis and Meiosis: Know the sub-stages (e.g., prophase, metaphase,
anaphase) and key events (e.g., chromosome alignment in metaphase).
Membrane Proteins and Transport: The role of carrier proteins and channel
proteins in transport across membranes.
ATP Production: Understand how mitochondria generate ATP via the electron
transport chain and ATP synthase.
Genetic Variation in Meiosis: Be clear on how crossing over and independent
assortment lead to genetic diversity.
, Unit 2: Genetics
Things to Be Aware Of:
Mendelian Inheritance: Understand dominant, recessive, homozygous, and
heterozygous traits, and how to calculate inheritance patterns using Punnett squares.
Gene Expression: Be aware of the process of transcription (DNA to RNA) and
translation (RNA to protein), and how codons and anticodons work.
Mutations and Their Effects: Learn the different types of mutations (point mutations,
insertions, deletions) and their potential impact on proteins.
Incomplete Dominance and Codominance: Be aware of genetic cases where one allele
doesn't completely dominate the other.
Key Things to Take Notes On:
Punnett Square Applications: Take note of examples that involve monohybrid and
dihybrid crosses.
Types of Mutations: Understand how frameshift mutations affect the protein sequence
versus point mutations.
Transcription and Translation Processes: Take detailed notes on the steps of protein
synthesis and the role of ribosomes and tRNA.
Genetic Disorders: Examples of genetic disorders (e.g., cystic fibrosis, sickle cell
anemia) and how they are inherited.
