Biology 3201
Course Description
This course continues the study of introductory biology. Topics include the homeostasis of human body systems, Mendelian and modern genetics, human reproduction and evolutionary processes.
Authorized Learning Resource
Homework Central
Fri Oct 2: Students completed Lab 2 - Flower Dissection.
Lab 2 - Flower Dissection (Due Tues)
Thurs Oct 1: Please review our introduction to Topic E - Reproductive Strategies. (2) Sexual Reproduction: (d) flowering plants. Be familiar with the male and female reproductive structures within a flower and their functions. Be able to label a diagram: (1) Male Stamen - (a) anther, (b) filament, (c) pollen grains. (2) Female Pistil - (a) stigma, (b) style, (c) ovum, (d) ovule and (e) ovary. Note the double fertilization of angiosperms (flowering plants)..to be continued.
Assign 4 - Modes of Reproduction (Due Fri)
Mon Sept 28: Please review our introduction to Topic E - Reproductive Strategies. (2) Sexual Reproduction (2 parents, variation, uses meiosis). Note the advantages of sexual reproduction and the various lifecycles: (a) vertebrate (human), (b) invertebrate (jellyfish), (c) gametophyte dominant plant (moss) and the alternation of generations. ...to be continued.
Fri Sept 25: Please review our introduction to Topic E - Reproductive Strategies: (1) Asexual Reproduction (1 parent, no variation, uses mitosis). Note the advantages of asexual reproduction and the various types: (a) binary fission, (b) budding, (c) vegetative propagation, (d) fragmentation, (e) parthenogenesis and (f) spores. ...to be continued.
Wed Sept 23: Students wrote Quiz 1 - The Cell Cycle. Please review our continued notes and discussion of Topic D - Sperm vs Egg Cells. We examined physical features of sperm and egg cells based on the following characteristics:(c) mitochondria number, (d) number produced, (e) motility and (f) outer structures.
Assign 3 - Sperm vs Egg (Fri)
Tues Sept 22: Please review our continued notes and discussion of Topic C - Meiosis. Be familiar with the differences between (1) spermatogenesis (meiosis in males) and (2) oogenesis (meiosis in females) under the following categories: number of surviving structures, equal or unequal cytoplasm division and continuous or discontinuous process. Also review our introduction to Topic (d) Sperm vs Egg. We examined physical features of sperm and egg cells based on the following characteristics: (a) relative size, (b) energy source, (c) mitochondria number...to be continued.
Quiz 1 - Wednesday
Assign 2 - Meiosis (Due Wed)
Mon Sept 21: Please review our continued notes and discussion of Topic C - Meiosis. We completed a summary table for meiosis and explored the stages (1) meiosis 1 - separation of homologous chromosomes and (2) meiosis 2 - separation of chromatids. We discussed the 2 sources of variation during this process that produce unique gametes: (1) crossing over during prophase 1 and (2) independent assortment during metaphase I...to be continued.
Quiz 1 - Wednesday
Thurs Sept 17: Please review our discussion of Topic B - Cancer As An Application of the Cell Cycle. Note that cancer results when the genes that control division mutate (change). The cell grows out of control to form a mass of irregular cells that do not function as healthy cells; a tumor. Be familiar with the difference between (a) benign tumors and (b) malignant tumors. Also review our introduction to Topic C - Meiosis. Note cells involved (gonads - testes or ovaries), cells produced (gametes - sperm or egg.) Note that meiosis reduces the chromosome number from diploid (2n) to haploid (n) and for this reason is sometimes called reduction division. Meiosis produces 4 genetically unique gametes that are not identical.
Quiz 1 - Wednesday
Wed Sept 16: Please review our continued notes and discussion of Topic A - The Cell Cycle. (3) cytokinesis. Note the difference between cytokinesis in animal cells (cleavage furrow) and cytokinesis in plant cells (cell plate). Students completed Lab 1 - "The Cell Cycle" by examining onion cells in various stages of this cycle.
Lab 1 - Cell Cycle (Due Thurs)
Assign 1 - Cell Cycle (Due Thurs)
Quiz 1 - Wednesday
Mon Sept 14: Please review our continued notes and discussion of Topic A - The Cell Cycle. We then discussed key events in each of the stages accompanied with a sketch of the cell in that stage: (1) interphase (G1, S & G2), (2) mitosis (a) prophase, (b) metaphase, (c) anaphase, (d) telophase. (3) cytokinesis. Note the difference between cytokinesis in animal cells (cleavage furrow)....to be continued.
Fri Sept 11: Please review our continued notes and discussion of Topic A - The Cell Cycle. Note cells involved (somatic), cells produced (somatic) and the overall steps of the process: (1) interphase - getting ready to divide, (2) mitosis - genetic division and (3) cytokinesis - division of the cytoplasm. We then discussed key events in each of the stages accompanied with a sketch of the cell in that stage: (1) interphase (G1, S & G2). We completed a pie graph exploring the time a cell spends in each stage....to be continued.
Thurs Sept 10: Welcome to Biology 3201. I am looking forward to working with you throughout the year. This was an introductory class. We distributed course descriptors and explained how you will be evaluated in this course. The Google Classroom Code was provided and this electronic classroom will display all course content and is where assignments, quizzes and test dates will be posted. We introduced Unit 1 - Cell Reproduction and the Continuity of Life. Topic A is the Cell Cycle. Be familiar with the purpose of the Cell Cycle in both unicellular and multicellular organisms. Note the cells involved in this process (somatic cells / body cells)...to be continued.
Contact:
steventrimm@nlschools.ca