cell parts | Nucleolus | Produces ribosomes and rRNA( stuff ribosomes are made of) | Cell Membrane (plasma membrane) | "Gatekeeper" Separates the cell from the rest of the environment and helps control what passes in and out of the cell. Semi-permeable: allows some materials to pass through but not all | Chloroplast | A special plastid that contains chlorophyll a pigment that captures the sun’s energy to produce glucose in a process called photosynthesis | Cell Wall | Rigid outer layer made
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What are the three most abundant lipids in the body? What is a triglyceride and where is it found? What is its exact chemical structure? What is the difference between saturated and unsaturated free fatty acids? What is a trans fat? Where can free fatty acids be found in the body? What is the unique structure of a phospholipid? Where are phospholipids found and what are their most important characteristics? What is a steroid fat? What is its structure? What are the most common steroid fats
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MOVEMENT ACROSS MEMBRANES Intracellular fluid Extracellular fluid Pond water Blood plasma K+ A- ClNa+ Cl+ K+ Na+ Cl- Na+ Na+ Gill epithelial cell Intestinal epithelial cells Cl- Cell membrane Anionic proteins (a) Ion concentration inside a single animal cell (b) Ion concentration across gill epithelium of a freshwater fish Blood capillary Intestinal lumen Glucose from meal Cross section of small intestine (c) Glucose transport across intestinal epithelium into
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In Hotel Rwanda‚ a 2004 film directed by Terry George‚ one of the first voices heard is that of a radio broadcaster from the Hutu power radio‚ Radio Télévision Libre des Mille Collines (RTLM)‚ claiming‚ “Rwanda is our Hutu land. We are the majority. They are a minority of traitors and invaders. We will squash the infestation.” This was the mentality of many ethnic Hutus that participated in the 1994 genocide against the Tutsi minority living in Rwanda. Linked with the autobiography published by Paul
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Case Study Summaries Case 1: J. Wellington Wimpy. Wimpy’s burger meal likely contained simple carbohydrates from the white flour bun‚ sugars in the ketchup‚ and saturated fats from the beef patty and cheese slice. Conversely‚ his turkey sub meal after the transformation likely provided complex carbohydrates from the whole wheat sub roll‚ lower amounts of saturated fats with high amounts of unsaturated fats in the turkey breast slices‚ and unsaturated fats from the veggies. Carbohydrates‚ which
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water was...H to O. Prepared by Lower concentration of solute Water potential – the ability of water move out of the solution through osmosis. Solute molecule Equal concentration of solute Higher concentration of solute H2O Selectively permeable membrane Water molecule Solute molecule with cluster of water molecules Net flow of water ψcell Water potential of cell (ψcell) – the ability of H2O molecules to move out of cell by osmosis. nwk ψsol Water potential for solution (ψsol) – the
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living organisms to control or regulate changes in their internal environment g. diffusion -- the movement of molecules from an area of high concentration to an area of low concentration h. osmosis -- the diffusion of water across a selectively permeable membrane i. osmoconformer -- and organisms that allows its internal concentration of salts to change in order to match the external concentration of salts in the surrounding water j. Osmo regulator -- an organism that regulates its internal concentration
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BIO 102-BioJeopardy II Exam is February 27th Breathe In‚ Breathe Out 100-Name 4 different types of respiratory surfaces for organisms with examples Skin-frogs Gills-Fish (also skin) Tracheae-Insects (tracheal tubes directly feed body tissues across cell membranes‚ separate from circulatory system) Lungs-Humans (other mammals)-exchange of gases 200-1‚ Air rushes into the lungs of humans during inhalation because A) the rib muscles and diaphragm contract‚ increasing the lung volume. B) pressure
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HUN1201 Exam III Study Guide Chapter 14 1) Fuel/energy needs for Physical Activity (different intensities)‚ during and post exercise -Adenosine triphosphate (ATP): o The energy-carrying molecule in the body (ATP must be generated continuously since muscles store only enough ATP for 1–3 secs of activity) -Creatine phosphate (CP): • Stores energy that can be used to make ATP • 3−15 seconds of maximal physical effort *(0-3 sec) 100% ATP/CP *(10-12 sec) 50% ATP/CP 50% Carbohydrates
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Comparison of Plant and Animal Cells Introduction Eukaryotic cells are very complex; there are many organelles‚ each serving a distinct function‚ present in eukaryotic cells. We can divide the eukaryotic group of cells in to two main groups‚ according to the presence of these membrane bound organelles‚ and the structural differences amongst the cells and their organelles. The two groups of eukaryotic cells are plant and animal cells. Nucleus The reason that plant and animal cells are not divided
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