21 24) Which of the following is an organic growth factor? 24)______A) peptone B) glucose C)...
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21 24) Which of the following is an organic growth factor? 24)______A) peptone B) glucose C) Mg+2 D) vitamin B1 A B C D QUESTION 22 25) During which growth phase will gram-positive bacteria be most susceptible to penic 25) A) log phaseB) lag phaseC) stationary phaseD) death phase A B QUESTION 23 26) Which of the following statements about biofilms is FALSE? 26) A) Biofilms in your body protect mucous membranes from harmful microbes.B) Biofilms on medical devices cause infections.C) Biofilms on rocks provide food for animal life.D) Compared to free-living bacteria, biofilms are more sensitive to antibiotics. OA D QUESTION 24 28) What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where 28) the two don't actively share an electron? A) covalent bondB) disulfide bondC) ionic bondD) hydrogen bond 0000 ABCO A QUESTION 25 29) A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of either RNA DNA. Testing for the presence of which of the following is most appropriate in this situation? 29)_ A) phosphate B) nitrogen C) thymine D) uracil OA QUESTION 26 30) In microscopy, the term resolution 30) A) is only observed in stained specimens.B) refers to the ability to distinguish fine structure and detail in a specimen.C) is improved when longer wavelengths of light are employed.D) refers to magnification when using the electron microscope. OA 0000 ABCD QUESTION 27 A) They are sensitive to 31) Which of the following statements about gram-negative cell walls is FALSE? 31) penicillin.B) Their Gram reaction is due to the outer membrane.C) They have an extra outer layer composed of lipoproteins, lipopolysaccharides, and phospholipids.D) They protect the cell in a hypotonic environment. OA B QUESTION 28 33) The 33) B method is used to indirectly measure microbial growth of filamentous bacteria and molds. A) metabolic activityB) turbidity measurementC) spread plateD) dry weight QUESTION 29 34) Protozoan motility structures include 34). OA D QUESTION 30 35) Antacids neutralize acid by the following reaction. Identify the salt in the following equation:Mg(OH)2 + 2HCl → MgCl2 + H2O 35) A) Mg(OH)2B) H2OC) MgC12D) HCI A A) flagella.B) cilia.C) cilia and pseudopods only.D) cilia, flagella, and pseudopods. B C 21 24) Which of the following is an organic growth factor? 24)______A) peptone B) glucose C) Mg+2 D) vitamin B1 A B C D QUESTION 22 25) During which growth phase will gram-positive bacteria be most susceptible to penic 25) A) log phaseB) lag phaseC) stationary phaseD) death phase A B QUESTION 23 26) Which of the following statements about biofilms is FALSE? 26) A) Biofilms in your body protect mucous membranes from harmful microbes.B) Biofilms on medical devices cause infections.C) Biofilms on rocks provide food for animal life.D) Compared to free-living bacteria, biofilms are more sensitive to antibiotics. OA D QUESTION 24 28) What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where 28) the two don't actively share an electron? A) covalent bondB) disulfide bondC) ionic bondD) hydrogen bond 0000 ABCO A QUESTION 25 29) A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of either RNA DNA. Testing for the presence of which of the following is most appropriate in this situation? 29)_ A) phosphate B) nitrogen C) thymine D) uracil OA QUESTION 26 30) In microscopy, the term resolution 30) A) is only observed in stained specimens.B) refers to the ability to distinguish fine structure and detail in a specimen.C) is improved when longer wavelengths of light are employed.D) refers to magnification when using the electron microscope. OA 0000 ABCD QUESTION 27 A) They are sensitive to 31) Which of the following statements about gram-negative cell walls is FALSE? 31) penicillin.B) Their Gram reaction is due to the outer membrane.C) They have an extra outer layer composed of lipoproteins, lipopolysaccharides, and phospholipids.D) They protect the cell in a hypotonic environment. OA B QUESTION 28 33) The 33) B method is used to indirectly measure microbial growth of filamentous bacteria and molds. A) metabolic activityB) turbidity measurementC) spread plateD) dry weight QUESTION 29 34) Protozoan motility structures include 34). OA D QUESTION 30 35) Antacids neutralize acid by the following reaction. Identify the salt in the following equation:Mg(OH)2 + 2HCl → MgCl2 + H2O 35) A) Mg(OH)2B) H2OC) MgC12D) HCI A A) flagella.B) cilia.C) cilia and pseudopods only.D) cilia, flagella, and pseudopods. B C
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