Grade 12 Life Science Lessons

Video Description
Lesson 1: The Nucleus and DNA
In this lesson we focus on what you need to know about the nucleus, genes, nucleic acid, RNA and DNA.
Lesson 2: Protein Synthesis and DNA Fingerprinting
In this lesson we look at protein, the process of protein synthesis, DNA fingerprinting as well as the sequencing of DNA.
Lesson 3: Cell Division - Mitosis and Meiosis
In this lesson we take a look at mitosis revision, the process of meiosis, first meiotic division, second meiotic division, the significance of meiosis, the production of sex cells as well as diseases and syndromes.
Lesson 4: Strategies for Reproduction
In this lesson on Strategies for Reproduction we focus on: External and internal fertilisatin, ovipary, ovoviviparty and vivipary, amniotic egg, precocial and altricial development as well as parental care.
Lesson 5: Male and Female Reproductive Structures
In this lesson we take a close look at the male and female reproductive systems as well as work through various key concepts and x-ample questions.
Lesson 6: Gametogenesis, Hormone Control System and Menopause
In this lesson we take a close look at Gametogenesis, Hormone Control and Menopause. Finally, we work through various key x-ample questions.
Lesson 7: Human Reproduction I
In this lesson on Human Reproduction I we take a close look at: Hormone control, fertilization, implantation and gestation
Lesson 8: Human Reproduction II
In this lesson on Human Reproduction II we take a close look at key concepts and x-ample questions relating to birth, contraception and sexually transmitted diseases.
Lesson 9: Genetics - Inheritance and Terminology
In this lesson on Genetics we take a look at inheritance and discuss related terminology as well as answer x-ample questions and x-ercises.
Lesson 10: Genetics - Mendel's Laws
In this lesson on Genetics we take a look at Mendel's Laws and consider x-ample questions and x-ercises.
Lesson 11: Genetics - Sex Determination, Blood groups, Genetic Variation and Genetic Engineering
In this lesson on Genetics we take a look at sex determination, sex-linked genetic diseases, blood group inheritance, genetic engineering and the uses of genetic engineering.
Lesson 12: The Nervous System
In this lesson on the Nervous System we focus on: Nervous tissue, the central nervous system, the autonomic nervous system as well as the peripheral nervous system.
Lesson 13: The Eye and Ear
In this lesson on the Eye and the Ear we focus on the following: The path of light, accommodation, pupillary mechanism, visual defects, the path of sound as well as hearing defects.
Lesson 14: Plant Responses to the Environment
In this lesson on Plant Responses to the Environment we focus on the following: Hormonal control in plants, Phototropism, Geotropism as well as plant defense mechanisms.
Lesson 15: Biodiversity I
In this lesson on Biodiversity I we focus on: Biodiversity and theories of the origin of plant and animal species, theories about evolution, Darwin's theory of evolution by natural selection, artificial selection in plants and animals as well as natural selection and the formation of new species.
Lesson 16: Biodiversity II
In this lesson on Biodiversity II we focus on the following: Evidence that evolution has occurred, human evolution, the Cradle of Humankind, African Fossils - Great Rift Valley, evolution in present times as well as alternative explanations to evolution.