Monday, December 16, 2019
12/16 Biology update and homework due 1/6
Hi folks,
Today we finished off 2019 by taking a look at meiosis. Meiosis is the process of cell division where the end product is a haploid cell that is genetically unique from the cells that it came from. When we get back from break we will begin our genetics unit.
We are off for the next two weeks so here wishing that everyone's holidays are merry, joyful, peaceful and safe!
For homework due 1/6
Do the enclosed .pdf (Answers included in the email)
Answer the following questions based on today's meiosis and mitosis simulation. Answers also included. (STUDY THEM! :) )
1. What did the little pickle shaped pieces of paper represent?
2. Why were there two different colors of paper?
3. To illustrate DNA synthesis, what did we do?
4. What represented the sister chromatids?
5. What represented homologous chromosomes?
6. What did the tape represent when we taped the two pieces of paper together?
7. In mitosis, when you illustrated metaphase, how were the papers lined up?
8. In meiosis, when you illustrated metaphase I, how were the papers lined up?
9. During meiosis prophase I, what did you do to show the tetrads?
10. What did you do to illustrate "crossing over" in meiosis prophase I.
11. To illustrate anaphase I in meiosis, what did you do to your little sister chromatids? Careful here.
12. To illustrate anaphase II in meiosis, what did you do to your little sister chromatids.
13. How were your sister chromatids lined up in meiosis, metaphase II?
14. What did you do to illustrate independent assortment?
15. What are the two ways that genetic shuffling takes place in meiosis?
16. In what phases do those two types of shuffling take place in meiosis?
17. When we started, how many chromatids were in the cell we worked with today?
18. After synthesis, how many chromatids were in the cell we worked with today?
19. After synthesis, how many CHROMOSOMES were in the cell we worked with today?
20. When we finished mitosis, how many chromosomes did the finished cells have?
21. When we finished mitosis were the cells diploid or haploid?
22. When we finished meiosis, how many chromosomes did the finished cells have?
23. When we finished mitosis, how many cells did we end up with?
24. When we finished meiosis, were the cells diploid or haploid?
25. When we finished meiosis, how many cells did we end up with.
26. Why is an enzyme called a catalyst?
Monday, December 9, 2019
12/9 Biology update and homework due 12/16
Hi folks,
Today we took a look at mitosis, a method of cell division that creates an identical cell to the original. Next week we will take a look at meiosis.
For homework this week:
Do the enclosed .pdf file. I've included the answers in a second .pdf so that you can use this as a self test. Please be sure to use your notes and try to get the answers correct. There's no better way to study than to quiz yourself.
Be sure to study this week's homework and past quizzes for next week's quiz.
Monday, December 2, 2019
12/2 Biology update and homework due 12/9
Hi folks,
Today we started our block on cell reproduction. This will lead us directly into genetics and then evolution as we move forward. Next week we will dive into mitosis and meiosis.
For homework this week please do (and study) the following questions. Remember, much of the following will be on next week's quiz. However, any past quiz questions are fair game, so study all your old flash cards and quizzes. It's been a while since we've seen those prefixes and suffixes so they are due to make a return visit as well.
1. What is a vesicle and what does it do?
2. What does RNA polymerase do?
3. What does DNA polymerase do?
4. What is exocytosis?
5. What is endocytosis?
6. What is phagocytosis?
7. What is pinocytosis?
8. Would leaving the front do open so that flies can come in and out of the house at will be passive transport or active transport?
9. Would kicking someone out of your house because he ate all the potato chips be active transport or passive transport?
10. Is phagocytosis a from of endocytosis or exocytosis?
11. What are the 3 steps of the cell life cycle (just interphase)?
12. What happens during each step?
13. Why is the S step important? In other words, what does it prepare the cell to do?
14. What is the meaning of diploid?
15. What is the meaning of haploid?
16. Draw a picture and label the centromere and the sister chromatid.
17. What is a chromatid?
18. What is a chromosome?
19. What is the difference between a chromatid and a chromosome?
20. What is a somatic cell? Are they diploid or haploid?
21. What is a gamete cell? Are they diploid or haploid?
22. Which bio molecule is best for quick energy?
23. What kind of molecule is a triglyceride and what does it do?
24. In which bio molecule would you find nitrogen atoms?
25. In which 2 bio molecules would you find a carboxyl?
26. So in the cell we have transcription and translation and then the proteins wander into the rough E.R. or the Golgi body. Now that they are all formed and trained, what do they do next? In other words, what are their jobs?
27. What does a lysosome do?
28. What's the difference between a vacuole and a vesicle?
Answers:
1. A vesicle is a "bubble" of lipid molecules that transfers materials into, out of, and around the cell.
2. It splits the DNA to make mRNA.
3. It splits DNA to make an identical copy of the DNA.
4. Getting things out of the cell.
5. Getting things into the cell.
6. Trapping and taking large particles into the cell.
7. Trapping and taking small particles into the cell.
8. Passive
9. Active
10. Endocytosis
11. G1 S and G2. Or, Gap 1, Synthesis and Gap 2
12. Gap 1 - Cell grows, makes proteins and does whatever job that cell is destined to do.
Synthesis - makes a full copy of all its DNA
Gap 2 - continues to do its job but also prepares to duplicate itself.
13. Synthesis is important because it creates a copy of the DNA that will be passed on to the bouncing baby new cell when the cell splits.
14. Having two sets of chromosomes.
15. Having one set of chromosomes.
16. See your notes.
17. A coiled DNA molecule.
18. A DNA molecule.
19. They are the same thing but one is coiled.
20. A body cell. Basically every single cell except for a gamete. They are diploid.
21. A sex cell/gamete. They are haploid.
22. Carbohydrate
23. It is a lipid and it is the basic molecule for storing energy.
24. Protein AND Nucleic acids.
25. Lipids and proteins.
26. ATHENS. Antibodies, Transport, Hormones, Enzymes, Nutrition, Structure.
27. It recycles cell parts that are no longer needed so that they can be used again.
28. A vacuole is an "empty" part of a cell that can be used to store waste or materials. In a plant cell, it is used to take up space. A vesicle is a bubble made of lipids to transport materials in, out and around a cell.
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