The purpose of Biology is to provide students with knowledge of organisms, or living things. The students will us the scientific method to careful investigate the various concepts and principles of following major subject areas of Biology: (1) Cell Biology; (2) Genetics; (3) Ecology; (4) Evolution; and (5) Physiology. These topics will be integrated with one another to demonstrate their inter-relationship and how they are connected to other science courses such as Integrated Science, Environmental Science, Chemistry and Physics. The students will also apply the major subject areas in everyday life and the constant changing world that is need of solutions to numerous issues. In order to promote greater understanding of biological concepts, the students will be engaged in various learning modalities such as note taking, partner/group activities, classroom discussions/debates, Internet/library research, and presentations. Through these and other activities, expressions of wide range of multiple intelligences will be encouraged. Lessons and research will be modified for those with special needs.
Champion Christian School teaches the California State Science Standards. The following Biology standards will be assessed:
Cell Biology
The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the cells. The students will know: (1) That cells are enclosed in semipermeable membrane and how they interact with their surroundings; (2) The roles of proteins called enzymes as catalysts in biochemical reactions while maintaining equilibrium; (3) How prokaryotic cells, eukaryotic cells and viruses differ in both complexity and structure; (4) The central dogma of molecular biology (i.e., protein synthesis) involving ribonucleic acid (RNA) in the nucleus and ribosomes in the cytoplasm; (5) The role of endoplasmic reticulum and Golgi apparatus in the secretion of proteins; (6) The process of photosynthesis that involves chloroplast capturing usable light energy that is stored in glucose (a form of sugar); (7) The process of cellular respiration that involves mitochondria releasing energy from chemical bonds of glucose; and (8) The types, functions and synthesis of macromolecules such as proteins, polysaccharides, lipids and nucleic.
Genetics
The nucleus of a cell contains chromosomes that are largely made of deoxyribonucleic acid, or DNA. DNA is a macromolecule that carries specific codes/messages, or genetic instructions, for various traits. The students will know: (1) Mutation and sexual reproduction allow for genetic variation among a given species; (2) Meiosis is the process of cell division which chromosome pairs separate and randomly segregate in production of gametes; (3) The fusion of male and female gametes, or fertilization, produces zygotes with new combination of alleles; (4) How to predict possible combinations of alleles, or genotypes, in a zygote from the genes received from parents; (5) How to predict the phenotypes, or the expression of genes, from a set of given genotypes; (6) Mendel’s laws of segregation and independent assortment; (7) The role of tRNA in translating genetic information in mRNA; (8) How to decode codons in RNA in predicting the sequence of amino acids which is the key in assembling specific proteins; (9) Mutation is the altering of DNA sequence thus altering or terminating the production of specific proteins; and (10) The concept of genetic engineering and how it is used for biomedical and agricultural purposes.
Ecology
Stability in an ecosystem is a balance between competing effects. The students will know: (1) Biodiversity of life is the sum total of different kinds of organisms and is affected by alterations of habitats; (2) How to analyze changes in an ecosystem resulting from changes in climate, human activity, introduction of nonnative species, or changes in population size; (3) How to analyze changes in an ecosystem are determined by the relative rates of birth, immigration, emigration, and death; (4) How water, carbon and nitrogen cycle between abiotic and biotic factors and how oxygen and cycles through photosynthesis and respiration; (5) The vital role of producers and decomposers in the stability of an ecosystem; and (6) The concepts of food web and energy pyramid and the transfer of nutrient and energy among organisms.
Evolution
The frequency of an allele in a gene pool of a population depends on many factors and its stability may change over time. Evolution is the result of changes that occur in constantly changing environment. The students will know: (1) Why natural selection acts on the phenotype rather than the genotype; (2) Why alleles that are lethal in a homozygous individual may be carried in a heterozygote and remain in a gene pool; (3) New mutations are constantly being generated in a gene pool; (3) Variations within a species increases the probability that some of the members will survive in a changing environment; (4) Natural selection determines the differential survival of groups of organisms; (5) A great diversity of species increases the chance of its survival in major changes in the environment; (6) The effects of genetic drift on the diversity of organisms in a population; (7) Reproductive or geographic isolation affects speciation; and (8) How to analyze fossil evidence with regard to biological diversity, episodic speciation, and mass extinction.
Physiology
As a result of the coordinated structures and functions of organ systems, the internal environment of the human body remains relatively homeostatic despite changes outside. This includes utilizing a variety of mechanisms of the immune system to combat disease. The students will know: (1) How complementary activity of major body systems allows cells with oxygen and nutrients and removes wastes such as carbon dioxide; (2) How the nervous system mediates communication within the body and body’s interactions with the environment; (3) How feedback loops in the nervous and endocrine systems regulate body’s conditions; (4) The role of neurons in transmitting electrochemical impulses and roles of sensory neurons, interneurons, and motor neurons; (5) The roles of skin in nonspecific defense against infection, antibodies in the body’s response to infection, and vaccination in providing protection from infectious diseases; (6) There are important differences between bacteria and viruses with respect to their growth and replication, the body’s primary defense against infections, and effective treatments of these infections; and (7) Why an individual with a compromised immune system may be unable to resist and survive infections by microorganisms that are usually benign.