Question

AAPI Week 1 Lab Cell S , Activ er 3 Use this with your labu ...... fim in the wesent you comple, then upload to the w w w USE THIS TEMPLATE ONLY 1. The lipid bilayer of a dlm is posed of what type of molecules? , proteins b. carbohydrates e. phospholipids d. fatty acids 2. True or False During the cell cycle, cytokinesis is the period when the cell's cytoplasm dirvides into two parts 3. What organelle contains enzymes that can destroy harmful bacteria and viruses? Line? roble 4. True or False: The Golgi apparatus produces most of the ATP in a cell. 5. True or False: Chromatid pairs separate during the metaphase stage of mitosis. 6. Chromatin is composed of what two molecules? 7. True or False: When you switch to a higher power objective lens to increase the total magnification, the diameter of the field of view also increases 8. True or False: Whenever body fluids are handled in the laboratory, universal precautions should be followed. - 9. (activity 3.1) Why is it important for the plasma membrane to be flexible? What do you think would happen if it became too rigid? 18. What is the stage of meiotic or mitotic cell division in which the chromosomes move away from one another to opposite poles of the spindle? 19. What is the final phase of cell division, in which the chromatids or chromosomes move to opposite ends of the cell and two nuclei are formed? 2020, 10 ht://courses.hci edu/pluginfile.php/65105/mod assign/intrattimento/Week 2015.20LABNOUPDATED.doc forcedowodel (9+top-qoz- (x2-Dec-2p+,- 29 Jouue Juossa dxe au ng 'swagod Buja

Answer 1

1. Phospholipids

• Phospholipids are able to form bilayer because they have two ends - phosphate are polar end and lipids form non-polar end. So in water the polar end faces outward and non polar end faces inward.

2. True

3. Lysosome

4. False

• Mitochondria is power house of cell and most of ATP are produced there

5. False

• They separate during anaphase of cell cycle

6. DNA and histone protein

7. False

• The diameter of field of view decreases

8. True

• Because there is risk of transmission of disease

9. Flexibility of plasma membrane allows transport of substance across the cell (makes plasma membrane semipermeable). It also allows it to adapt and move. If plasma membrane were to be rigid then transport of substance would become difficult.

18. Anaphase

19. Telophase

Prophase The first step in mitosis where the cell's chromatin condenses into chromosomes. Metaphase Mitotic spindle pull sister chromatids to the cell's equator. Anaphase The chromatids of each chromosome separate at the centromere and move to opposite poles. Telophase The nucleoli reappear, two new nuclear membranes begin to form, but the cell has not yet completely divided. Feel free to comment if you have any problem in understanding this answer.