Nutrition, Metabolism, and Temperature Regulation We are often more concerned with the taste of food than with its nutritional value when choosing from a menu or when selecting food to prepare. Knowing about nutrition is important, however, because food provides us with energy and the building blocks necessary to synthesize new molecules. What happens if we don't obtain enough vitamins, or if we eat too much sugar and fats? This chapter explains nutrition (p. 932), metabolism (p. 940), carbohydrate metabolism (p. 942), lipid metabolism (p. 949), protein metabolism (p. 950), interconversion of nutrientmolecules (p. 952), metabolic states (p. 953), metabolic rate (p. 955), and body temperature regulation (p. 956). Homemade Science Lab « The Kitchen Pantry Scientist Homemade science kits are fantastic, inexpensive holiday or birthday gifts. In addition, they’re great places to store loose science items you might already have around the house, like magnets or magnifying glasses. I’ll list how much some of the ingredients/stuff cost me at Target. In a single shopping trip, it’s easy to fill a plastic bin with enough supplies to do a number of science experiments (with a few last-minute additions from around the kitchen, like dish soap and milk.) The other morning, I talked about making your own science kit on Kare11 Sunrise. Pair your kit up with KidScience app for iPhones and iPods, and watch your kid turn your kitchen table into a science lab! I’ll list some “ingredients” for science kits and link directly to the experiments in blue (just click on the experiment name.) Safety goggles, petri dishes,magnets, plastic test tubes, eyedroppers, magnifying glasses, plastic beakers and graduated cylinders are great additions to any kit!
Biology Animations Carnegie Mellon's Office of Technology for Education and Department of Biological Sciences create multimedia materials for teaching and learning Biology. After an analysis of a number of Biology courses was performed to identify when and how shared concepts where taught, a team of biologists, media programmers, and learning experts came together to create animations designed to improve understanding of some of the main concepts taught in Modern Biology and Biochemistry. Phosopholipid Membranes Tutorial page describing the construction and properties of Biological Membranes. Biological Membranes Biological membranes are dynamic structures composed of a diverse set of phospholipid molecules and proteins. Phase Transition This tutorial explains how phospholipids bilayers undergo to a cooperative phase transition or melting that is similar to protein denaturation. back to index Signal Transdaction Serine Protease Uniport - Glucose Transport Symport - Lactose Permease Transporter ATP Synthesis
Manipulatives-Based Laboratory for Majors Biology – a Hands-On Approach to Understanding Respiration and Photosynthesis | Boomer | Journal of Microbiology & Biology Education Sarah M. Boomer *, Kristin L. Latham Department of Biology, Western Oregon University, Monmouth OR 97361. The first course in our year-long introductory series for Biology majors encompasses four learning units: biological molecules and cells, metabolism, genetics, and evolution. Of these, the metabolism unit, which includes respiration and photosynthesis, has shown the lowest student exam scores, least interest, and lowest laboratory ratings. Consequently, we hypothesized that modeling metabolic processes in the laboratory would improve student content learning during this course unit. Freshman-level courses for Biology at most four-year universities include a unit on metabolism, with emphases on respiration and photosynthesis. In this report, our goal was to improve student content learning in our metabolism unit. General methods overview This course was divided into four learning units: biological molecules and cells, metabolism, genetics, and evolution. Assessment methods
The vascular system. The movement of blood through the vessels – Visual TA The system of arteries. Le système des artères. El sistema de las arterias. Das System von Arterien. Система артерій. Система артерий. Anatomy and regulation of blood vessels. Diagram of arteries, veins, and capillaries. Structure aorta: 1. Cross-section through a human artery of the elastic type: 1. Anatomy of the arterial wall. The structure of the vein. Scheme venous valve. Video of the venous valves in action. Capillaries – the vessels of blood microcirculation. Like this: Like Loading...
10 Surprising Ancestral Origins Revealed by DNA Testing How sure are you of your origins? Here are 10 examples where DNA testing has thrown up some unexpected results. 1. African DNA found in Yorkshireman In 2007 the Daily Mail ran a report on John Revis, a Yorkshireman who was so blond and blue-eyed when he was younger that he thought he was directly descended from Viking or Anglo-Saxon stock. A1 is very rare and highly specific to west Africa. It is possible that John Revis descends directly from the north African clans that comprised a small part of the armies of Roman Britain from 43 – 410 AD, but the Roman occupation left only a tiny genetic footprint on the modern English population and it is thought more likely that the source of his African DNA is a slave from West Africa. The contributor of the A1 chromosome to the Revis surname may not be its founder. Roman genetic legacy in Abergele 2. 3. Cai ‘the Roman’ and Julius Caesar Perhaps the surprising outcome is that DNA testing actually appears to have debunked the whole myth. 4. 5. 6. 7.
A simple model for natural selection In this simple procedure, grains of rice are used to model small organisms, and students act as predators selecting food during limited time spans. Over a number of generations, the proportion of grains of rice of each colour in each population will change if students select one colour in preference to another. This is a simple model for natural selection resulting from predation. Picking out the grains from each tub of vermiculite should only take a couple of minutes each generation. But counting the grains of rice to restore populations and analysing the results can be laborious. Collating group results on a central spreadsheet would remove the labour involved in calculations, but may run the risk of students not following the detail of the process. Download the spreadsheet Calculating record sheet for model for selection (19 KB) Forceps Petri dish Stop watch Plastic containers (such as empty ‘spread’ tubs) Horticultural vermiculite coloured with food colouring (Notes 1 and 2) Preparation
DEEP BLUE HOME: PSYCHEDELIC DIATOMS Diatom /ˈdaɪətɑːm/ From Greek diatomos = cut in two. Named because they typically appear to be cut in half. Diatoms are microscopic algae composed of separate halves, with delicate siliceous cell walls. Below are a few examples of diatom art—practiced since Victorian times—of arranging diatoms pleasingly. Credits/links for images above, from top to bottom Προτεινόμενα θέματα για εξάσκηση Είσοδος Εγγραφή Προτεινόμενα Θέματα Πανελληνίων εξετάσεων Προτεινόμενα Θέματα Πανελλαδικών εξετάσεων Γενική Παιδεία Νεοελληνική Γλώσσα (Θέματα-2014α | Θέματα-2014β | Θέματα-2013α | Θέματα-2013β)Μαθηματικά και Στοιχεία Στατιστικής (Θέματα-2014α | Θέματα-2014β | Θέματα-2013α | Θέματα-2014β)Βιολογία (Θέματα-2014α | Θέματα-2014β | Θέματα-2013α | Θέματα-2013β)Φυσική (Θέματα-2013)Ιστορία (Θέματα-2014α | Θέματα-2014β | Θέματα-2013)Αρχές Οικονομικής Θεωρίας (Θέματα-2014α | Θέματα-2014β | Θέματα-2013α | Θέματα-2013β) Θεωρητική Κατεύθυνση Λογοτεχνία (Θέματα-2014α | Θέματα-2014β | Θέματα-2013α | Θέματα-2013β)Ιστορία (Θέματα-2014α | Θέματα-2014β | Θέματα-2013α | Θέματα-2013β)Αρχαία Ελληνικά (Γνωστό-2014α - Άγνωστο-2014α | Γνωστό-2014β - Άγνωστο-2014β | Γνωστό-2013α - Άγνωστο-2013α | Γνωστό-2013β - Άγνωστο-2013β)Λατινικά (Θέματα-2014α | Θέματα-2014β | Θέματα-2013α | Θέματα-2013β) Θετική Κατεύθυνση Τεχνολογική Κατεύθυνση Σχετικά Άρθρα Εκπαίδευση Τεχνολογία Δελτία Τύπου Άρθρα Ιδιωτικά σχολεία Προπτυχιακά
Inclined Plane Required understanding Changing the angle of the incline, theta Let's take a closer look at the angle of the incline, and how changing it effects the sizes and directions of the weight components. In the demonstration below you can change the angle of the incline using the number adjuster labeled T. (T stands for 'theta'.) Fg = 10 Fpara = 5 Fperp = 8.66 Thinking about the parallel force, notice that for small angles of incline, say 10 degrees, this force is small. At a much larger angle of incline, say 80 degrees, the parallel force is much larger, the blue vector is long. Mathematics for the parallel force Can we see all of this in the formula for Fpara? Fpara = Fg sin(theta) The weight of the object, Fg, does not change when theta changes. In this section and the next we are going to talk about small and large numbers. Here's a graph of the sine of theta verses theta. Small theta: Large theta: Mathematics for the perpendicular force Fperp = Fg cos(theta) Another way to see the components