- | P a g e
MICROBIOLOGY EXAM 3 NEWEST 2024-2025 ACTUAL
EXAM COMPLETE 300 QUESTIONS AND CORRECT
DETAILED ANSWERS ( VERIFIED ANSWERS )
|ALREADY GRADED A+
Which molecule provides the template that is directly used to make a protein in translation
- tRNA
- the gene
- DNA - ANSWER- b. mRNA
b mRNA
A bacteriophage (phage) infects
- bacteria
- mammals
- only humans
- arthropods
- any eukaryote - ANSWER- a. bacteria
Which microorganism commonly produces endospores
- Enterobacter
- Proteus 1 / 4
- | P a g e
- Escherichis
- Clostridium - ANSWER- d. Clostridium
Which type of RNA is used to make ribosomes
- DNA
- rRNA
- mRNA
- tRNA - ANSWER- b. rRNA
Proglottids are
- viral structures
- prokaryotic structures
- reproductive structure in tapeworms
- none of the above - ANSWER- c. reproductive structures in
tapeworms
What is the final product of translation
- mRNA
- proteins
- amino acids
- DNA
- none of the above - ANSWER- b. proteins
- / 4
- | P a g e
What carries the amino acid to the correct spot on an mRNA molecule
- Ribosomes
- proteins
- tRNA
- codons - ANSWER- c. tRNA
In the inducible lac-operon, when lactose is not present the operon is
- off, with no transcription occurring
- on, with transcription occurring
- neither, the presence of absence of lactose is not relevant - ANSWER-
- off, with no transcription occurring
Which genus of bacteria causes diarrhea with massive water and electrolyte loss and is transmitted through fecal contaminated water
- Bacillus
- Clostridium
- Escherichia
- Vibrio
- Proteus - ANSWER- d. Vibrio
Which of the following is not a trait shared by both prokaryotic domains
- all are unicellular
- all have a plasma membrane
- both domains have organisms that can undergo methanogenesis 3 / 4
- | P a g e
- both domains have anaerobic and aerobic representatives - ANSWER-
- both domains have organisms the can undergo methanogenesis
Which of the following is acellular
- fungi
- protozoans
- algae
- bacteria
- viruses - ANSWER- e. viruses
Place the following steps in a lytic infection in the correct order. 1- penetration, 2-release, 3-assembly, 4-attachment, 5-biosynthesis
- 1,2,3,4,5
- 4,1,5,3,2
- 4,1,3,5,2
- 4,5,1,2,3 - ANSWER- b. 4,1,5,3,2
Which statement about Plasmodium is not correct
- it is transmitted by a mosquito
- it is endemic to over 100 countries
- it is an obligate intracellular parasite
- it causes Q fever - ANSWER- d. it causes Q fever
- / 4