8. Living things contain DNA at one point in their life cycle. 2. What is complexity? What is the most complex type of system that scientists study?
Onion, Cheek, and Elodea Lab 1. What are the two types of cell we discussed? How would you classify onion, cheek, and Elodea cells? ans: The two types of cells we discussed is the plant cells, and animal cell. Onion, Cheek, and Elodea cells are all eukaryotic.
Laboratory 1: The Cell 1 LABORATORY 1: THE CELL Learning Objectives: Upon completion of this laboratory, students should be able to: • Describe the basic organization of cells and tissues • Explain the difference in resolving power of light and electron microscopes, and use this knowledge to understand which organelles can be visualized with each • Use red blood cells as microscopic rulers for estimating sizes of other cells • Describe the location, function, and staining characteristics of nuclei and the main cytoplasmic organelles • Identify mitotic cells based on the structure of the chromosomes Keywords: hematoxylin and eosin (H&E) period acid-Schiff method (PAS) osmium staining cell (plasma) membrane protoplasm karyoplasm
5. Distinguish between animal and plant cells – structures in common/ structures unique to each. 6. Where is DNA located in a prokaryote cell? In a eukaryote cell?
3. Water and nutrients are transported by separate means within plants. Name and describe the models of how water and organic nutrients (sugars) are transported throughout the plant. 4. Name and describe the function of the five plant hormone groups discussed in your text.
9. What are the main groups of Plants? 10. What are the differences between a rhizoid and a rhizome? 11.
| | | A) | endoplastic reticulum | | | B) | microtubules | | | C) | cytoplasm | | | D) | mitochondria | | | | | | Feedback: The cell's chemical processes take place in a semifluid material called the cytoplasm. This material provides an ideal environment for organelles because of its fluidity. | | 7 CORRECT | | This shows an example of endoplasmic reticulum. What is the significance of its structure? | | | A) | provides a location for DNA production | | | B) | helps decrease surface area | | | C) | allows selective permeability of cell membrane | | | D) | facilitates breakdown of chemical bonds | | | | | | Feedback: The pleats and folds of the endoplasmic reticulum provides a large surface area where cellular functions, such as breaking chemical bonds, can take place.
Use the dichotomous key provided to identify the phylum of your plant samples. Data and Observations: In the data chart below, list the location you discovered your plants in and provide a physical description of each of your four plant samples. Data from plants collected | | Plant Sample | Location | Physical Description | 1 | Forrest area | Pine tree with cones | 2 | Backyard | Red thin flowers | 3 | Backyard | Green leafy rough | 4 | Front yard | Stringy greyish moss | Analysis Questions: Answer the following questions in complete sentences. What characteristics allowed you to identify each of your plant samples? Whether it was green or red or thick or thin, these are all variations to
stores proteins and alot of exporting (sending stuff out of the cell) 3. In which part of the cell would you expect to find nucleotides? building block for DNA, DNA found in the nucleus 4. Name the two organelles involved in energy conversion.chloroplast and mitochondria 5. What are the basic functions of the organelles in chapter 4?
This brings our attention that “what is life?” As the science of biology, indicated to us that metabolic processes involve special macromolecules very large molecules consisting of long chains of hundreds of atoms. These long chains consist of protein and nucleic acid (DNA, RNA) which is present in all cells (Luisi, 1998). Bacteria cell has two