BIOLOGY REVIEW
Cells are the basic unit of life and often combine with other cells to form tissues.
3. The image above is of a plant cell. You can tell by the shape of the cell. Plant cells tend to be rectangular shaped while animal cells are circular. Plant cells have a cell wall and have a large central vacuole.
5&7. In the cell cycle, the cell grows and prepares for cell division. The cell is in interphase when it is preparing for division. Cell division involves the splitting of the nucleus into two new nuclei; this is called mitosis. Mitosis is important for cells because it ensures that the cells grow and repair.
The cell cycle has four phases. During most of the cell cycle, the cell is growing, replicating its DNA, and preparing for cell division. 8. The above is the stages of mitosis. 10. Plant stem cells are called meristematic cells. The meristematic tissues are unspecialized, which means, they are capable of mitosis. They are found in several different locations in the plant. The tissue is responsible for growing new parts of the plant. 11. A tissue is a group of cells that work together to perform a function. A tissue found in plants that are an example of the definition above is the ground tissue. A tissue found in animals that is an example of the definition above is the epitheail tissue.
An organ consists of groups of tissues and works with other organs to form organ systems.
12. An example of the tissues found in a plant organ is vascular tissue. It moves substances from the roots to the leaves. It transports sugars from the leaves to other parts of the plant.
13. An example of the tissues found in an
BIOLOGY TEST REVIEW CHAPT 12&13 ok You better love me big time fo dis. Griffith-Griffith found that when living R cells (which should have been harmless) and dead S cells (which also should have been harmless) were injected together, the mouse became ill and living S cells could be recovered from its body. Furthermore, the type of the cells recovered from the mouse's body was determined by the type of the dead S cells. The transforming factor had to be a gene Avery-Avery is attributed with…
Biology Review For the Final: Total 75-100 MCQ Please review all the terminology involved with these topics Ch 2:Water molecule structure - polarity Properties due to polarity - Hydrogen bonds Cohesion/adhesion Specific heat Universal solvent How these properties are helpful for life (animal & plants) Enzymes - Mechanism of action Activation energy Exothermic & endothermic reactions with & without enzymes Ch 3,4,5: Ecology: Energy flow, cycles of matter…
Biology Quiz Review Cellular Membranes: Cell membrane is semi-permeable Only lets certain things in H2O small molecule…starch is huge CM is a Mosaic Mixture of two types of molecules, lipids and proteins Movement within the membrane of these molecules Fluid mosaic model: cell membrane very dynamic, not static Phospholipid bilayer Cholesterol Oligosaccharides proteins 1. Two layers of lipids: phospholipid bilayer is amphipathic A. Hydrophilic head-interacting with water B. Hydrophobic…
Biology Exam Review Layers of eye: Sclera: white portion of eye, maintains shape. Iris: coloured portion of the eye. Pupil: opening in the center of the eye. Conjunctiva: mucous membrane layer that covers the sclera. Lacrinal gland: produces tears Lacrinal Duct: is in the inner edge of eye. Cornea: transparent, nonvascular layer covering the coloured part of the eye. Choroid: in between retina and sclera. Rich with blood vessels. Lens: biconvex structure that helps focus the image onto retina…
Bio94 (TA Alejandra Rodriguez) Study guide for the final exam on Wednesday March 20, 2013 Hi! This is only a skeleton study guide that you may use to help organize the key concepts presented in lectures. Some important points are in bold. I also added the figures of each chapter that I consider useful for studying (it doesn’t mean that you have to memorize them! Just try to extract the useful information). I also added the homework questions with some hints. I wrote all my comments in blue…
Definitions Hierarchy: An organizational scheme that dictates the order in which organisms exist Biotic: Of or relating to living organisms Abiotic: Of or characterized by the absence of life or living organisms Life Characteristics: Having a metabolism, reproduction, growth and development and responding stimuli and adapting Metabolism: Using energy from some source to grow and reproduce Calorie: A source of energy Homeostasis: The ability to stay in the same condition Carbon Compounds:…
Name: __________________________ BIOLOGY EOC REVIEW PACKET Scientific Method 1. Define the following: a. Independent Variable: the variable that I change in the experiment b. Dependent Variable: the variable that I am measuring (it depends on the independent variable) c. Control Variable: variable that stay the same d. Controlled experiment: an experiment in which only one variable is changed at a time e. Hypothesis: an educated guess (If…, then…) 2. You have measured the…
Unit 3 Review Chapter 11 1. Describe each of the experiments that demonstrated that DNA is the genetic material. 2. Explain how the contributions of Wilkins and Franklin, Watson and Crick, and Chargaff resulted in understanding the structure of DNA. 3. Describe the importance of covalent bonds and hydrogen bonds to the structure of a DNA molecule. 4. Explain the results of the Meselson-Stahl experiment and describe the predicted results if DNA replication followed the other possible models. 5. Describe…
Estrogen & the cell: Lipid estrogen enters the target cell by simple diffusion Estrogen binds to clusters of estrogen protein receptors This activated estrogen-estrogen receptor (E-ER) travels into the cell’s nucleus The estrogen-estrogen receptor then binds to the estrogen response element (((( this is near the promoter, but can act to either stimulate OR turn off transcription)))) Estrogen goes straight across cells bc it’s a steroid molecule Hydrophilic molecules don’t go straight across...…
Biology SOL Review - 2012 Experimental Design Observation: -Using your senses to explore life & collect data Inference: -Logical interpretation based on background knowledge and experience. Testable Question: All science research starts with a question that you can test. Steps to Designing and Conducting an Experiment Problem: -The question you are trying to answer Hypothesis: -A possible explanation for an observation *Must be testable *Always should be an "IF, then" statement…