BIOL 1406 Lab Midterm Exam Questions and Answers 100% Pass

BIOL 1406 Lab Midterm Exam Questions and Answers 100% Pass What is the stinging organelle that assists it in capturing large prey? Trichocyst Which species of amoeba did you observe under the microscope? Amoeba proteus Which experimental group receives the treatment? Control group A solution that tends to release protons is An acid The portion of a phospholipid that contains the phosphate group has one or more electrical charges. That makes this region of the molecule Hydrophilic The Biuret test is used to detect the presence of which group of macromolecules? Proteins Which of the following molecules move across the cell membrane by simple diffusion? Oxygen, carbon dioxide, and water Which of the following transport processes requires the expenditure of energy? Exocytosis Which of the following statements regarding enzymes is true? Enzymes increase the rate of reaction When the products of a reaction are at a higher energy level than the reactants, the reaction is Endergonic Term which means that if an object is centered with the low power objective, it is centered when you switch to the high power objective? Par-centered Eukaryotic cells can be larger than prokaryotic cells because Their internal membrane system allows compartmentalization of functions, and extra surface area for nutrient exchange and location of enzymes Which of the following terms is an explanation of scientific phenomenon that is accompanied by supporting evidence from multiple investigators? Theory You are characterizing groups of guppies. You have found that guppies live in environments with cichlids. You make the statement "Drab color helps guppies hide from predators." This as an example of Hypothesis There are 20 different amino acids that make up proteins found in living organism. How are these amino acids identified? By the characteristics of their side chains or "R groups" Which functional group is most responsible for some organic molecules behaving like bases? Amino Movement of a substance from a point of higher to low concentration is known as Passive transport A plant cell placed in a hypotonic solution will take on water. Where does the water go to? Central vacuole If all enzyme available is bound to substrate, then increasing substrate concentration will not increase the rate of reaction. That point where the active sites of all enzymes are occupied by a substrate is called Maximum reaction rate Which cellular structure, found in both prokaryotes and eukaryotes is responsible for protein synthesis? Ribosomes When biologists study the internal structure of cells, they would most likely use Transmission electron microscope When designing an experiment the treatment and control group must be the same, expect for the variable being tested. What is the inert substance that is often given to control groups so the test subjects don't know if they're receiving the treatment or not? Placebo A Which of the following would be classified as acid rain? Rain with pH of 4.5 Rice would be most accurately be classified as a Strach Which of the following is a common monosaccharide? Fructose The difference in concentration of a solute across a membrane is called Concentration gradience An enzyme that hydrolyses proteins will not act upon starch. This fact is an indication that enzymes are Specific What is the light source used with a compound light microscope? Visible light An organism that causes disease in its host is known as Pathogen Ideally, control and experimental groups differ in