Duration: …………….. First Periodical exam (15 marks)
... ----------------------------------------------------------------------------------------------------12- Lysozyme is digestive enzyme that occurs naturally in tears and saliva ( T ). --------------------------------------------------------------------------------------------------13- Lipid A is the l ...
... ----------------------------------------------------------------------------------------------------12- Lysozyme is digestive enzyme that occurs naturally in tears and saliva ( T ). --------------------------------------------------------------------------------------------------13- Lipid A is the l ...
Cell Envelope—Outer Covering 3 Basic layers: Glycocalyx, Cell wall
... Then Gram’s iodine is added and it stabilizes the crystal violet to form lg crystals in the peptidoglycan layer When the ETOH is added, it doesn’t wash out the purple color When the counterstain is added (safranin) its color (red) is NOT ...
... Then Gram’s iodine is added and it stabilizes the crystal violet to form lg crystals in the peptidoglycan layer When the ETOH is added, it doesn’t wash out the purple color When the counterstain is added (safranin) its color (red) is NOT ...
2. Mitosis
... are pulled apart and sister chromatids move to opposite ends of the cell along the spindle fibres ...
... are pulled apart and sister chromatids move to opposite ends of the cell along the spindle fibres ...
cell membrane
... and textile manufacturer (1675) who was the first to view living cells using a microscope. Matthias Schleiden—German botanist (1838) discovered that all plants were made of cells. Theodore Schwann—German zoologist (1839) discovered that all animals were made of cells. Rudolf Virchow—German physician ...
... and textile manufacturer (1675) who was the first to view living cells using a microscope. Matthias Schleiden—German botanist (1838) discovered that all plants were made of cells. Theodore Schwann—German zoologist (1839) discovered that all animals were made of cells. Rudolf Virchow—German physician ...
Checking Concepts 1. The nucleus is like a black box because there
... 8. The correct sequence of DNA bases is important because, if the base sequence is incorrect, then the correct protein will not be made or the protein that is made will not work correctly. The cell will be unable to do its job well if the proteins are not working correctly. 9. The three types of gen ...
... 8. The correct sequence of DNA bases is important because, if the base sequence is incorrect, then the correct protein will not be made or the protein that is made will not work correctly. The cell will be unable to do its job well if the proteins are not working correctly. 9. The three types of gen ...
![Cell Prison analogy[1] - NylandBiology2012-2013](http://s1.studyres.com/store/data/008094435_1-6b4378a352221e3c96a92815b0a77167-300x300.png)
Cell Prison analogy[1] - NylandBiology2012-2013
... making them prisoners, a similar process takes place in the nucleolus only the nucleolus is making ribosomes instead of prisoners. This organelle is found in both the plant and animal cell. ...
... making them prisoners, a similar process takes place in the nucleolus only the nucleolus is making ribosomes instead of prisoners. This organelle is found in both the plant and animal cell. ...
Define the seven characteristic of life. List the cell theory statements
... Differentiate between prokaryotic and eukaryotic cells. Identify examples of prokaryotes and eukaryotes. Differentiate between plant and animal cells. Identify the features that all cells have in common. Illustrate each organelle. Create a graphic representation of each organelle. Describe the struc ...
... Differentiate between prokaryotic and eukaryotic cells. Identify examples of prokaryotes and eukaryotes. Differentiate between plant and animal cells. Identify the features that all cells have in common. Illustrate each organelle. Create a graphic representation of each organelle. Describe the struc ...
THINK ABOUT IT
... It was not until the mid-1600s that scientists began to use microscopes to observe living things. The research of a few famous scientists led to the development of The Cell Theory. Robert Hooke (England-1665) • Used an early compound microscope to look at a nonliving thin slice of cork (plant materi ...
... It was not until the mid-1600s that scientists began to use microscopes to observe living things. The research of a few famous scientists led to the development of The Cell Theory. Robert Hooke (England-1665) • Used an early compound microscope to look at a nonliving thin slice of cork (plant materi ...
(b).
... Meiosis produces sex cells with 1/2 the number of chromosomes of a body cell. In humans, meiosis results in sex cells with how many chromosomes? 23 ...
... Meiosis produces sex cells with 1/2 the number of chromosomes of a body cell. In humans, meiosis results in sex cells with how many chromosomes? 23 ...
Science Menu: Cells
... of paper with things glued on it. Make sure to include all the main structures of the cell and the function of each. You will need to use materials you have at home or materials found in the classroom. All parts must be labeled clearly in order to receive credit. Your representation of the organelle ...
... of paper with things glued on it. Make sure to include all the main structures of the cell and the function of each. You will need to use materials you have at home or materials found in the classroom. All parts must be labeled clearly in order to receive credit. Your representation of the organelle ...
The cell
... Rough ER - studded with ribosomes – site of protein production (most will be exported out of the cell) Free ribosomes in the cytoplasm produce proteins that remain in cell. Smooth ER - lacks ribosomes – site of lipid production – contains enzymes that detoxify drugs & ...
... Rough ER - studded with ribosomes – site of protein production (most will be exported out of the cell) Free ribosomes in the cytoplasm produce proteins that remain in cell. Smooth ER - lacks ribosomes – site of lipid production – contains enzymes that detoxify drugs & ...
Looking Inside Cells
... boundary that separates the cell from its environment. All cells have cell membranes. In cells with cell walls, the cell membrane is located just inside the cell wall. The cell membrane controls what substances come into and out of a cell. Inside a cell are tiny structures called organelles, which c ...
... boundary that separates the cell from its environment. All cells have cell membranes. In cells with cell walls, the cell membrane is located just inside the cell wall. The cell membrane controls what substances come into and out of a cell. Inside a cell are tiny structures called organelles, which c ...
Cell Transport
... concentration so water is low. 2. Hypotonic – solute is in low concentration so water is high. 3. Isotonic – solute concentration is equal on both sides. ...
... concentration so water is low. 2. Hypotonic – solute is in low concentration so water is high. 3. Isotonic – solute concentration is equal on both sides. ...
Cells: Agriculture`s Building Blocks
... • When a cell reaches its maximum size, the cell divides to increase in number. • Original cell: parent cell • New cells: daughter cells ...
... • When a cell reaches its maximum size, the cell divides to increase in number. • Original cell: parent cell • New cells: daughter cells ...
Cells: Agriculture’s Building Blocks
... • When a cell reaches its maximum size, the cell divides to increase in number. • Original cell: parent cell • New cells: daughter cells ...
... • When a cell reaches its maximum size, the cell divides to increase in number. • Original cell: parent cell • New cells: daughter cells ...
Cells: Agriculture`s Building Blocks
... • Chromatids move toward center of spindle • When they reach the center, they connect themselves to the fibers of the spindle ...
... • Chromatids move toward center of spindle • When they reach the center, they connect themselves to the fibers of the spindle ...
Multiple Choice
... 23. The cell’s internal supporting framework is called the cytoskeleton. 24. The plasma membrane can be described as a double layer of phospholipid molecules. 25. Rough endoplasmic reticulum looks rough because there are mitochondria attached to it. 26. Ribosomes are only found attached to endoplasm ...
... 23. The cell’s internal supporting framework is called the cytoskeleton. 24. The plasma membrane can be described as a double layer of phospholipid molecules. 25. Rough endoplasmic reticulum looks rough because there are mitochondria attached to it. 26. Ribosomes are only found attached to endoplasm ...
Application Note - Horizon Discovery
... pharmacological agents. Anti-mitotics target microtubules, either by binding directly to tubulin, or indirectly by inhibiting upstream regulators such as mitotic kinases or kinesin motor proteins1. This results in disruption of the bipolar spindle and mitotic arrest. Similarly, actin filaments can b ...
... pharmacological agents. Anti-mitotics target microtubules, either by binding directly to tubulin, or indirectly by inhibiting upstream regulators such as mitotic kinases or kinesin motor proteins1. This results in disruption of the bipolar spindle and mitotic arrest. Similarly, actin filaments can b ...
monocellular eukaryote
... Function in yeast (and Function in other multicellular eukaryotes in bacteria monocellular eukaryotes) Function ...
... Function in yeast (and Function in other multicellular eukaryotes in bacteria monocellular eukaryotes) Function ...
BIOLOGY 1: FIRST SEMESTER FINAL EXAM
... 33. Know the organelles of the cell and what they do. 34. How are prokaryotes and eukaryotes different? 35. Give an example of a prokaryotic cell? ...
... 33. Know the organelles of the cell and what they do. 34. How are prokaryotes and eukaryotes different? 35. Give an example of a prokaryotic cell? ...
File
... cells can result in growth and repair within organisms, cell division also has an essential role in the reproduction of entire organisms. Some organisms reproduce by simple cell division, in which a single cell or group of cells each duplicates its genetic material and then splits into 2 new genetic ...
... cells can result in growth and repair within organisms, cell division also has an essential role in the reproduction of entire organisms. Some organisms reproduce by simple cell division, in which a single cell or group of cells each duplicates its genetic material and then splits into 2 new genetic ...
Mitosis
Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.