Study guides, Class notes & Summaries

In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? - correct answer Nitrogen Fixation If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OH- concentration of the solution? - correct answer 10-8 M Fungi are able to reproduce asexually by creating conidiospores and sporangiospores. Which of the following is an accurat...

Straighterline Microbiology Final Exam 2024 Questions With 100% Correct Answers The study of evolutionary relationships among organisms is called ______. - answerphylogeny The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. - answerLast Universal Common Ancestor Organisms called parasites are ______. - answeralways harmful to their host Which of the following does not indicate microbe involvement in energy and nutrient flow? - answerThermal hot spr...

Cell walls are not typically possessed by ______. - Answer️️protozoa The two major groups of helminths are the ______ and the ______. - Answer️️roundworms; flatworms Which of the following is not true of conjugation? a. Involves direct contact between cells b. Transfers genes for drug resistance c. Transfers genes for enzymes and adherence molecules d. Involves the action of bacteriophage e. The donor retains a copy of the transferred genes - Answer️️Involves the action of b...

Microbial control methods that kill/destroy __________ are able to sterilize. - Answer️️endospores Sanitization is a process by which - Answer️️the microbial load on objects is reduced. An example of an agent that lowers the surface tension of cells is - Answer️️alcohol High temperatures _______ and low temperatures _______. - Answer️️kill cells, inhibit cell growth Microbe(s) that is/are the target(s) of pasteurization include - Both b & c - Answer️️ (Mycobacterium sp...

What microbial process was responsible for changing earths atmosphere from one without oxygen to one with oxygen? - Answer️️oxygenic photosynthesis in the nitrogen cycle, which of the following phases involves the release of nitrogen as N2 into the earths atmosphere? - Answer️️denitrification Farmers commonly inoculate legume crops with Rhizobium bacteria for which of the following purposes? - Answer️️the two form a symbiotic relationship increasing the plant's access to nitro...

Koch - Answer️️Who developed a set of criteria that could be used to establish a causative link between a particular microorganism and a particular disease? Jenner - Answer️️Who is credited with developing and documenting the first vaccination procedure against smallpox? Tyndall - Answer️️Whose work on spontaneous generation first demonstrated the existence of a very heat-resistant form of bacteria that are called endospores? Evidence supporting RNA as primary role in evolution...

An organism with a temperature growth range of 45°C to 60°C would be called a(n) ______. a. extremophile b. thermophile c. psychrophile d. facultative psychrophile e. thermoduric microbe - Answer️️b. thermophile An organism that cannot tolerate an oxygen environment is a(n) ______. a. aerobe b. obligate aerobe c. facultative anaerobe d. microaerophile e. obligate anaerobe - Answer️️e. obligate anaerobe

C. Protozoa are a diverse group of organisms that often prove difficult to classify into a taxonomy. - Answer️️Which class of eukaryotic microorganisms can be subdivided into groups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa? A. Helminths B. Algae C. Protozoa D. Fungi D. Transposons contain DNA that codes for enzymes that remove it from one site in the genome and integrate it into another. - Answer️️Genetic material can be excised from one chromosome and direct...

In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? - Answer️️Nitrogen Fixation If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OH- concentration of the solution? - Answer️️10-8 M Fungi are able to reproduce asexually by creating conidiospores and sporangiospores. Which of the following is an accurate explan...

Agar is a complex polysaccharide that comes from a/an ___________. a. green plant b. fungus c. bacterium d. algae e. marine invertebrate - Answer️️d. algae Using microbes to detoxify a site contaminated with heavy metals is an example of _________. a. biotechnology b. bioremediation c. decomposition d. immunology e. epidemiology - Answer️️b. bioremediation

Straighterline Microbiology Midterm Review 2024 Questions and Answers Agar is a complex polysaccharide that comes from a/an ___________. a. green plant b. fungus c. bacterium d. algae e. marine invertebrate - Answer️️ -d. algae Using microbes to detoxify a site contaminated with heavy metals is an example of _________. a. biotechnology b. bioremediation c. decomposition d. immunology e. epidemiology - Answer️️ -b. bioremediation The three physical forms of laboratory media...

Straighter line microbiology final exam questions and answers The incidence of deaths from communicable disease is __________ in the US compared to the entire world. - Answer️️ -Less Caring for patients infected with a new virus requires safety precautions for medical personnel. Choosing appropriate procedures is an example of ___________ process. - Answer️️ -Deductive Which of the following is not a process in the scientific method? Laboratory experimentation Development of the...