SCI

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COMP SCI TEST EXAM QUESTIONS AND ANSWERS LATEST UPDATE When using the circle() command, what value do we put inside the parentheses? The radius of the circle When Tracy is facing right, from what location does she start drawing her circle? the bottom of the circle Where does Tracy always start in the grid world? At the (0,0) coordinate in the middle of the canvas What are the dimensions of Tracy's world? 400 pixels x 400 pixels Which commands would move Tracy forward 100 pixe...

SCI-TEST EXAM QUESTIONS AND ANSWERS LATEST UPDATE what are the limitations of stellar parallax as stars get further away, the angle we measure gets smaller making it harder to measure, meaning that the error is higher Life cycle of stars (black dwarf) Nebula (a dense region in nebula begins to shrink, warm up and become a protostar) main-sequence star (star shines as nuclear reactions inside produce light and heat) red giant (star of less mass expands and glows red as it cools) ...

SCI-TEST EXAM QUESTIONS AND ANSWERS LATEST UPDATE Glaciers solid ice formations that move extremely slowly along the land surface. How are glaciers formed? form when snow remains in the same area, year-round and changes into ice. Each year, new layers of snow fall and compress the previous layers. This compression forces the snow to re-crystallize, forming grains similar in size and shape to grains of sugar. what are the two main types of glaciers? Continental Glaciers and Valley Gla...

PHYSIO SCI221 FINAL EXAM QUESTIONS AND ANSWERS LATEST UPDATE Positive and Negative Feedback Difference Positive- rare in the body, result of sudden occurrence (or amplifies a change from normal point) Example would be: -birth -blood clotting -Increases the original stimilus -milk production until baby is done feeding -uterine contractions during birth -fever (virus/bacteria, body heats self to get rid until enemy is destroyed) Negative-Most homeostatic mechanisms are negative- ef...

PL SCI 221 - MIDTERM EXAM QUESTIONS AND ANSWERS LATEST UPDATE middle lamella Non-living area between adjacent cells and is filled with Ca2+ and Mg2+ pectates (pectin; a complex set of polysaccharides) which cement adjacent cells together. Fruit ripening! pectinases enzyme that degrades pectin during the ripening process; breaks down pectin resulting in fruit softening flavr savr slow down softening process by limiting pectin breakdown; so they can leave on the vine longer and have a ...

POLI SCI TEST FINAL!! EXAM QUESTIONS AND ANSWERS LATEST UPDATE What is an electoral system? -Electoral system refers to rules that govern how people vote at elections and how votes translate into representation and government -It defines the threshold for deeming a candidate elected (rules for how people win office through a vote) What are the types of electoral systems? Three broad types: -Plurality -Majoritarian systems -Proportional representation system What is the plurality ...

BIOSCI 221 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Gelatin test Measures/determines: Gelatinase Medium: Nutrient gelatin Results: (-) gels/solidifies, (+) liquefaction Reference organism: Bacillus cereus Citrate tests Measures/determines: Organisms ability to use citrate as source of carbon Medium: Simmon's citrate agar Results: (-) remains green, (+) Prussian blue Reference organism: Sprorosarcina ureae (Q) Gram + cocci, sarcina arrangement, spore former Mycobacterium sme...

SCI 221 EXAM QUESTIONS AND ANSWERS LATEST UPDATE True or false: macro- means little False True or false: the prefix for mouth is opto- False The prefix 'cyto' means cell what does the prefix 'hepa' mean? Liver Please provide the prefix for the opposite of 'thermo' Psychro True or false: Lyso- means to dissolve True True or false: a prefix for blood is hepa- False True or false: a prefix for external is encephalo- False An important structural component of the...

SCI 221 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Please provide the prefix for the opposite of 'Thermo'? 1-Cardio 2-Psycho 3-Pneumo 4-None of the above 5-Physio None of the above True or False: A prefix for external is encephalo False True or False: A prefix for blood is hepa False A prefix that would be used to describe someone that studies tissues: Histo An important structural component of the body that is firm but is much more flexible than bone is known as cartilage....

SCI 221 FINAL EXAM STUDY GUIDE QUESTIONS AND ANSWERS LATEST UPDATE Homeostasis The maintenance of a stable internal environment in the body. Positive/Negative Feedback Loops Mechanisms that regulate physiological processes by either amplifying (positive) or reducing (negative) changes. Intrinsic Control Regulation of physiological processes by internal mechanisms without external influence. Fat building blocks The basic structural units of fats, primarily fatty acids and glycerol. O...

SCI 221 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Chaperone proteins assist in the proper folding of other proteins so they can have the correct functional shape. True ATP is the form of energy that cells generally use. When two amino acids are joined, a peptide bond is formed and an H+ ion is released. False Any large molecule made up of many identical small molecules is called a(n) polymer. DNA and RNA are important because information molecules. What term is often used to descri...

SCI 221 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Processes for maintaining or restoring homeostasis are known as A. sensor mechanisms. B. integrating mechanisms. C. set point mechanisms. D. homeostatic control mechanisms. D. homeostatic control mechanisms. Which of the following is a basic component of every feedback control loop? A. sensor mechanism B. integrating center C. effector D.feedback E All of these are components of a feedback control loop. E All of these are componen...

SCI 221 EXAM QUESTIONS AND ANSWERS LATEST UPDATE What is are the two types/functions of bone marrow? Red & yellow - produces red blood cells and stores energy as fat. The external portion of the bone is known as Cortical bone Bones grow due to activity in the Epiphyseal plates Which of the following is NOT CONSIDERED a long bone. Radius Fibula Tibia C5 Vertebral Body ----- C5 Vertebral Body When an astronaut is in space for 2 months what may happen to their bone density as co...

SOILSCI221 EXAM MIDTERM QUESTIONS AND ANSWERS LATEST UPDATE In what forms can K be found in? exchangeable form (adsorbed onto the colloid) fixed between the clay layers In weathered primary minerals Is there a gaseous form of K? Nope (just like P) Does K have to change form in the decomposition process? Nope What roles does K play in the plant? required for opening and closing of stomata by guard cells, increases size and quality of fruits, grains and veggies--essential to quality...

FINAL EXAM SCI 221 QUESTIONS AND ANSWERS LATEST UPDATE To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a(n) feedback control loop. Local control or _____, intrinsic mechanisms often make use of chemical signals. autoregulation The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as organs that are directly inf...

COMP SCI 221 QUESTIONS AND ANSWERS LATEST UPDATE To distribute your application to different platforms, how many Java versions do you need to create? Just one version Which one of the following statements is true? Java has a huge developer community Which method is the starting point of all Java programs? (Just type the name of the method) main Fill in the blank to declare a method called "hello()". void _______ hello() Which method prints text in a Java program? Sln() F...

FINAL COMP SCI 221 QUESTIONS AND ANSWERS LATEST UPDATE A _____ constraint is used to define a column value that is not NULL when no value is provided. A default constraint is used to define a column value that is not NULL when no value is provided. A default constraint specifies a default value for a column when an INSERT or UPDATE statement does not provide a value for the column. What does a user that interacts with a database use to read and write data? Users typically use SQL (Str...

BIOSCI 221- TEST QUESTIONS AND ANSWERS LATEST UPDATE WHAT IS A MICROBE? A microbe is a microscopic organism - commonly defined as a living organism that requires a microscope to be seen. They can be unicellular (ex: most protist or bacteria) or multicellular Cell - A cell is the smallest unit of life composed of a membrane-enclosed compartment. - Microbial cells range in size from millimeters down to 0.2 micrometers. Viruses - noncellular microbes that can be up to ten times smal...

SCI 221 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Which level of control operates at the cell level, often using genes and enzymes to regulate cell function? intrinsic regulation extrinsic regulation extracellular regulation intracellular regulation intracellular regulation To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a(n) effector control loop. internal environmental control loop. ...