More properly known as alpha-amino acids, their general structure is: Nineteen of the twenty amino acids have the same arrangement around the central alpha-carbon: a. an amino group, b. a carboxyl group, c. a hydrogen, and d. an R group (called the “side chain”) which differs for each amino acid. Recall that when 4 different…
The term “dogma” describes a doctrine or code of beliefs accepted as authoritative. The central dogma of biology refers to the way that genetic information is stored and retrieved in living cells. The classic relationship is DNA > RNA > Protein. Thus DNA functions as the information storage molecule, and this information is “read out”…
Observations Volume and Temperature Trial T1 (temperature of the air in the flask of boiling water in Celsius) 99ᵒC T2( temperature of air in cooled flask in Celsius) 7ᵒC A(volume of water in flask at T2) 73 mL V1(volume of air in flask at T1) 250 mL V2( Volume of air in flask at T2)…
The cardiovascular system or circulatory system is a system that moves nutrients, gases, and wastes between cells helps fight diseases and transports blood throughout the body (Circulatory System). The main components of the human cardiovascular system include the heart, blood, and various blood vessels. There are several different circuits contained in the cardiovascular system. One…
– Bonding capacity is an important chemical property for elements – All members of the Alkali Metals have one extra electron and need to give it away – Alkaline Earth Metals have two extra electrons that they must get rid of – Halogens need to acquire an electron along with chalcogens – Alkaline Earth will…
Factors affecting the absorption of alcohol Body weight – greater volume of blood in a larger person keeps the blood alcohol level lower Speed of drinking – faster alcohol is consumed the quicker the blood alcohol will rise Food in stomach – food absorbs the alcohol in your body Mix of drinks – alcohol and…
Theory The Law of Conservation of Momentum states that in a closed system, the total momentum of masses before and after their collision is constant-momentum, which is conserved. This states that when two things collide the sum of the momentum will be the same before the collision as after. This law also states that the…
Purpose The purpose of this experiment is to determine the relationship between the vertical depression of the free end of a meter stick and the weight sticks attached. Theory Hooke’s Law shows that when an elastic material is deformed, restoring forces will arise which try to bring the material back to its starting situation. The…
Health – the overall condition of the body or mind and the presence or absence of illness or injury Wellness – optimal health and vitality, encompassing all the dimensions of well-being Risk Factor – a condition that increases ones chances of disease or injury Infectious Disease – a disease that can spread from person to…
Autism, a growing social disorder in our society is defined as a pervasive developmental disorder of children, characterized by impaired communication, excessive rigidity, and emotional detachment. Over the years autism has remained a mystery when it comes to the cause. The original theory was that autism was caused by genetic predisposition, but over time this…
SHARK FAMILIES: There are more than 350 know species of sharks today, which can all be placed under 8 scientific orders that contain 30 families. They are placed into these categories by their shared characteristics, this is called taxonomy. The more closely related species are placed in another family in the order. SQUAINIFORMES: The angel…
Purpose The purpose of the experiment is to determine the specific types of pigments found in a beet leaf and in a spinach leaf by using paper chromatography and two solvents: water soluble solvent and lipid soluble solvent. Hypothesis If a water soluble solvent is present, then there will be the movement of only the…
With ¼ North Americans being affected with a mental illness sometime in their life, people can see that living in a family with one member affected by a mental illness is quite prevalent. From this lone statistic, one would think that much of our countries population would be educated on the topic of mental illnesses;…
Introduction Despite being naturally occurring, the amount of heavy metals in the environment has increased greatly throughout the years as a result of industrialization and human activity. Although many of these metals are vital for sustaining the lives of various microorganisms, high levels have resulted in much pollution and the disruption of the biotic processes…
Introduction Aqueous calcium hydroxide, also known as lime water is used to verify the presence of carbon dioxide gas, (carbon dioxide reacts with the calcium hydroxide to produce calcium carbonate) this is achieved by bubbling the gas through the solution, if the solution turns cloudy then the precipitate calcium carbonate has formed, thus carbon dioxide…
Lead-Acid batteries were the first type of rechargeable battery ever invented. They were invented in 1859 by the French physicist, Gaston Plante. They are very useful in vehicles due to their low cost, robust nature, high tolerance for abuse and large power-to-weight ratio. lead-acid batteries are not only used in cars, but can be used…
Relative Sizes (Earth, solar system, Milky Way galaxy, local super cluster, universe) Relative Distances If the sun shrank to 1mm (grain of sand) then earth would be 11cm away, Pluto would be 4 meters and the nearest star would be ajax If the entire solar system shrank to 1mm one side of the milky way…
Star: A large ball of glowing gas that generates heat and light, through nuclear fission in its cove. Our sun is a star. Planet: any of the nine large celestial bodies in the solar system that revolves around the sun and shine by reflected light. Moon (or satellite): the natural satellite of the Earth.…
The evolution of the star: Stars are born out of clouds of gas and dust. A star generates energy by converting hydrogen into helium deep in the centre (the core). As most of the hydrogen turns into helium in the core, the core runs out of “fuel”. The core contracts under pressure and becomes hotter…
Formation: Differences between disk and halo: –Orbits of stars, ages of stars, the metal contents in stars, and the amount of gas and dust are all different Current theory suggests that the Galaxy formed from an enormous cloud of gas (the Protogalactic Cloud) The halo and the first generations of stars formed as this cloud…