BIO 251 EXAM 1 BUNDLE NEWEST ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+(2025)
Define microbiology - (answer)The study of microorganisms, how they work, interact with the
environment, and interact with us.
Bacteria, the largest and most important group of microorganisms.
List two emerging infections - (answer)Tuberculosis
Hantavirus- mutation
Ebola
E. coli- in gut
Describe the impact of infectious disease on human deaths before the 1900, currently worldwide and
compared to the deaths from wars and natural disasters. - (answer)Before the 1900 50% of all children
died of infectious disease before reaching the age of 10.
Currently about 1/3 of deaths worldwide are due to infectious diseases.
Deaths from wars: 150 million have died of AIDS, TB and malaria alone since 1945 compared with 23
million lost to wars
Natural disasters: 160 times more people have died from AIDS, malaria respiratory and diarrhea diseases
than in all natural disasters combined.
List the 6 groups of microorganisms - (answer)-Fungi
-Protozoa
-Algae
-Prokaryotes
, BIO 251 EXAM 1 BUNDLE NEWEST ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+(2025)
-Helminths
-Virus
Fungi composed of - (answer)Molds- multicellular, reproduced by sexual and asexual spores
Yeasts- unicellular, reproduced asexually by budding, some produce sexual spores
List at least one disease caused by each type of microorganism
-Protozoa, helmiths, fungi, algae, prokaryotes, viruses - (answer)*Fungi* - yeast infection (Candidiasis),
cryptococcosis, pneumocystis pneumonia
*Protozoa* - plasmodium (some can cause malaria-non-motile)
*Algae* - cholera (shellfish poisoning)
*Prokaryotes* - Tuberculosis
*Helminths* (worms) - tape worms
*Virus* - AIDS, influenze, West Nile, SARS
List different characteristics of each group of microorganisms - (answer)Fungi- Eukaryotic (have
membane-bound nucleus). Obtain their food from other organisms.
Protozoa- single celled eukaryotes, most reproduce asexually some produce sexually, classified by
mechanism of motility.
Algae- Unicellular or multicellular. Photosynthetic. Simple reproductive structures. Non-pathogenic
except for their role in red tides and shellfish poisoning (ppl eating fish that eat algae). Make worlds most
oxygen as part of photosynthesis.
Prokaryotes- Unicellular and no nucleus. Much smaller than eukaryotes. Found everywhere there is
sufficent moisture; some found in extreme environments (archea). Reproduces asexually.
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+(2025)
Define microbiology - (answer)The study of microorganisms, how they work, interact with the
environment, and interact with us.
Bacteria, the largest and most important group of microorganisms.
List two emerging infections - (answer)Tuberculosis
Hantavirus- mutation
Ebola
E. coli- in gut
Describe the impact of infectious disease on human deaths before the 1900, currently worldwide and
compared to the deaths from wars and natural disasters. - (answer)Before the 1900 50% of all children
died of infectious disease before reaching the age of 10.
Currently about 1/3 of deaths worldwide are due to infectious diseases.
Deaths from wars: 150 million have died of AIDS, TB and malaria alone since 1945 compared with 23
million lost to wars
Natural disasters: 160 times more people have died from AIDS, malaria respiratory and diarrhea diseases
than in all natural disasters combined.
List the 6 groups of microorganisms - (answer)-Fungi
-Protozoa
-Algae
-Prokaryotes
, BIO 251 EXAM 1 BUNDLE NEWEST ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+(2025)
-Helminths
-Virus
Fungi composed of - (answer)Molds- multicellular, reproduced by sexual and asexual spores
Yeasts- unicellular, reproduced asexually by budding, some produce sexual spores
List at least one disease caused by each type of microorganism
-Protozoa, helmiths, fungi, algae, prokaryotes, viruses - (answer)*Fungi* - yeast infection (Candidiasis),
cryptococcosis, pneumocystis pneumonia
*Protozoa* - plasmodium (some can cause malaria-non-motile)
*Algae* - cholera (shellfish poisoning)
*Prokaryotes* - Tuberculosis
*Helminths* (worms) - tape worms
*Virus* - AIDS, influenze, West Nile, SARS
List different characteristics of each group of microorganisms - (answer)Fungi- Eukaryotic (have
membane-bound nucleus). Obtain their food from other organisms.
Protozoa- single celled eukaryotes, most reproduce asexually some produce sexually, classified by
mechanism of motility.
Algae- Unicellular or multicellular. Photosynthetic. Simple reproductive structures. Non-pathogenic
except for their role in red tides and shellfish poisoning (ppl eating fish that eat algae). Make worlds most
oxygen as part of photosynthesis.
Prokaryotes- Unicellular and no nucleus. Much smaller than eukaryotes. Found everywhere there is
sufficent moisture; some found in extreme environments (archea). Reproduces asexually.
