Grade Master

Future Energy-Questions and Answers Graded A+ Geothermal - ANSWER-Energy source that uses the heat below the Earth's surface to produce steam to spin a turbine. (Renewable) Hydroelectric - ANSWER-Energy source that uses moving water to spin the turbine directly. (Renewable) Solar - ANSWER-Energy source that uses the heat or light energy from the Sun to form electricity. (Renewable) Wind - ANSWER-Energy source that uses moving air directly to spin a turbine. (Renewable) Biomass ...

Biochemistry Exam 2 (Carbohydrates)-Questions and Answers Graded A+ The 2 f-groups in a sugar - ANSWER-Hydroxyl and carbonyl The 2 carbonyl groups in sugars - ANSWER-Aldehyde and Ketone Minimum number of carbons in an aldose - ANSWER-3 Minimum number of carbons in a ketose - ANSWER-4 What's the basis for defining a sugar? - ANSWER-How it behaves in acid Aldose vs. Ketose - ANSWER-Aldose - aldehyde; ketose - ketone Triose - ANSWER-sugar with 3 carbons Tetrose - ANSWER-sugar...

Biology The Origin of Life-Questions and Answers Graded A+

evolution and the history of life exam 1-Questions and Answers Graded A+ absolute dating - ANSWER--the age in years before present; given as a number relative date - ANSWER--the age in terms of the order of events in earth's history; given as a name of the time interval Nicolas Steno what does his principle tell you? - ANSWER--17th century, Florence, Italy -created "steno's principles" which is the basic principles of the science of stratigraphy -principle tells us how to orde...

Biology The Origin of Life-Questions and Answers Graded A+ Life on earth date of origin - ANSWER-between 3.5 and 4 billion years ago Fist living creatures - ANSWER-Prokariotic-like; supported by the fossil record Spontaneous generation (definition) - ANSWER-The origin hypothesis where organisms come to life directly from non-living matter Spontaneous generation (origin) - ANSWER-Origin hypothesis created by Greek philosophers; Aristotle believed that life arose from "slime". Dis-p...

IGCSE Business: Analysis of Accounts-Questions and Answers Graded A+ What do businesses analyse their accounts? - ANSWER-1. Identify strength and weaknesses as well as the strategies to deal with it. 2. Check if the business meets its objective. 3. Improve future business performance The margins that measure business's profitability are: - ANSWER-1. Gross profit margin 2. Profit margin 3. Return on Capital Emplyoed Gross profit margin - ANSWER-shows how much gross profit is earned ...

World War 1-Questions and Answers Graded A+ Causes of World War I - ANSWER-nationalism, imperialism, militarism, creation of alliances (Central and Allied Powers); immediate cause: assassination of Archduke Francis Ferdinand (heir to Austrian throne) by a Serb on June 28, 1914 Triple Alliance, Triple Entente - ANSWER-the triple alliance was made up of germany, italy, and austria hungary and the triple entente was made up of russia france and great britain. Italy eventually switched sides t...

Human Physiology of the Kidney-Questions and Answers Graded A+

Human Biology: Urinary System-Questions and Answers Graded A+ Organ system that plays a major role in maintaining the salt, water, and pH balance in the blood - ANSWER-Urinary System A waste product of amino acid metabolism - ANSWER-Urea A hormone released by the kidneys that regulates the production of red blood cells - ANSWER-Erythropoietin (EPO) Transports blood into the kidneys - ANSWER-Renal Artery Transports blood out of the kidneys - ANSWER-Renal Vein Transports urine fr...

Human Physiology of the Kidney-Questions and Answers Graded A+ The urinary system includes - ANSWER-kidneys, ureters, urinary bladder, urethra The urinary system doesn't include: - ANSWER-adrenal glands Which of the following waste products excreted in urine is the result of metabolic reactions in muscle cells - ANSWER-creatinine What is normally excreted in the urine? - ANSWER-vitamins, drugs, excess ions, uric acid, urea, creatinine Which of the following is not normally excret...

Biochemistry - Folic Acid and B12-Questions and Answers Graded A+ What are dietary sources of Vitamin B12? - ANSWER-Meats Shellfish Poultry Eggs Dairy products Which two reactions require Vitamin B12? - ANSWER-Homocysteine -> Methoinine (homocysteine N-methyltransferase/methionine synthase) Isomerization of methyl malonyl CoA (methylmalonyl-CoA mutase) What are the two reactions that require S-Adenosylmethionine (SAM)? - ANSWER-Norepinephrine -> Epinephrine Homocysteine -...

Thermodynamics Exam 1-Questions and Answers Graded A+

Thermodynamics (Chapter 12)-Questions and Answers Graded A+ Thermodynamics - ANSWER-The study of energy and its transformation from one form to another. Thermochemistry - ANSWER-The study of the relation between chemical reactions and changes in energy. -The energy associated with chemical reactions. -Thermochemical equation: describes a chemical rxn. (ex: 2H2 + O2 -> 2H2O Thermochemical Equilibrium - ANSWER-A condition in which temperature is uniform throughout a material. -Tempe...

Thermodynamics Exam 1-Questions and Answers Graded A+ Thermodynamics - ANSWER-The study of motion of heat and its effect on surroundings System - ANSWER-Something of interest to our study Surrounding - ANSWER-Everything external to the system Boundary - ANSWER-Separates the system from its surroundings Closed System - ANSWER--mass is constant -could have heat or work interactions -closed to mass flow Isolated System - ANSWER-(special case of closed system) -Does not interact...

Respiratory System Exam Study set-Questions and Answers Graded A+

Respiratory System Exam-Questions and Answers Graded A+ What is the respiration rate, in breaths per minute? Note that he has 5 breaths across 15 seconds. - ANSWER-20 * What do you think happens to the levels of CO2 in exhaled air as breathing rate increases? - ANSWER-They decrease * During normal ventilation, exhaled air has a CO2 concentration of 35 mmHg. What would you predict the value of the first exhalation would be after a prolonged breath hold? - ANSWER-Increased What did y...

Respiratory System Exam Study set-Questions and Answers Graded A+ Define respiration - ANSWER-gas exchange between the blood and cells Tidal volume is the volume of air inspired and expired during one ______________ - ANSWER-breath Define phlegm - ANSWER-thick mucus secreted by the respiratory lining External respiration takes place - ANSWER-in the lungs What forms the floor of the nose? - ANSWER-hard palate What happens to increased amounts of mucous produced in the trachea? - A...

Biology- Role of digestive enzymes in the human body-Questions and Answers Graded A+

Anatomy Test 1 Enzymes-Questions and Answers Graded A+ enzymes are - ANSWER-proteins all enzymes are ____ _____ (runs chemical reactions) - ANSWER-biological catalysts properties of a biological catalyst - ANSWER-1. increases the rate of the reaction without the addition of chemicals or a change in temp 2. the enzyme is not changed at the end of the reaction 3. does not change the final product or nature of the reaction addition of the enzyme will not give ____ products - ANSWER-d...

Biology- Role of digestive enzymes in the human body-Questions and Answers Graded A+ What is amylase? - ANSWER-Amylase is an enzyme that catalyses the breakdown of starch into sugar what is pepsin? - ANSWER-an enzyme that breaks down proteins what is trypsin? - ANSWER-protein digesting enzyme what is maltase? - ANSWER-Enzyme which converts the remaining sugars into glucose What is lipase? - ANSWER-an enzyme that breaks down lipids Where does amylase come from? - ANSWER-salivary...