Exam 1 Flashcards
The enzyme that causes the breakdown of the cell wall by cleaving the two amino acids in the glycan layer of the peptidoglycan is:a) cellulase b) glycosilase c) penicillin d) lysozyme e) amylase
d) lysozyme
The process through which endospores are formed from vegetative cells is called: a) sporulation b) germination c) chemotaxis d) osmosis
a) sporulation
A rigid layer that is composed of sugars and amino acids found in the cell wall of eubacteria is the: a) glycocalyx b) periplasmic space c) teichoic acids d) peptidoglycan
d) peptidoglycan
The presence of membrane enclosed organelles is characteristic of: a) prokaryotic cells b) eukaryotic cells c) all cells d) viruses
b) eukaryotic cells
This person developed an organic arsenical compound as an effective cure of syphilis: a) Erlich b) Henle c) Pasteur d) Lister e) Waxman
a) Erlich
The molecule most commonly used to discern evolutionary relationships between organisms is: a) tRNA b) the rec A protein c) rRNA d) DNA polymerase II
c) rRNA
You are working for Jack Daniels distillery and want to make ethanol form glucose. The organism that you would use for this process is: a) Pneumocystic carinii b) Methanococcus jannaschii c) Escherichia coli d) Chlamydomonas sp. e) Saccharomyces cerevisiae
e) Saccharomyces cerevisiae
A term describing molecules or regions of molecules that readily interact with water: a) svedberg b) amphipathic c) hydrophobic d) hydrophilic e) oxidants
d) hydrophilic
An example of a Basidiomycete: a) Micromonospora flavus b) Oscillatoria limnetica c) Mycobacterium smegmates d) Neurospora crassa e) Agaricus campestris
e) Agaricus campestris
Most fungi send out cellular filaments called: a) tetrasporal b) hyphae c) mycorrhizae d) asci e) septa
b) hyphae
An organelle that is composed of two parts or subunits made of protein and RNA whose major function in protein synthesis is the: a) lysosome b) chloroplast c) ribosome d) mitochondria e) golgi apparatus
c) ribosome
This group of fungi is known to rot wood: a) Zygomycetes b) Basidiomycetes c) Phycomycetes d) Diatoms
b) Basidiomycetes
A rigid layer that is composed of sugars and amino acids found in the cell wall of eubacteria is the: a) glycocalyx b) lipopolysaccharides c) teichoic acids d) peptidoglycan e) periplasmic space
d) peptidoglycan
The group of naturally ocurring prokaryotes that do not have a cell wall is called the: a) yeast b) archebacteria c) mycobacteria d) mycoplasma e) protozoans
d) mycoplasma
The 9+2 arrangement of the microtubules is seen in: a) chromosomes b) spindle fibers c) basal bodies d) flagellum
d) flagellum
Polyene antibiotics are used to kill: a) gram positive bacteria b) fungi c) viruses d) Staphylococcus aureus
b) fungi
Prior to this person’s work, food spoilage was a much more common occurence: a) Cohn b) Winogradsky c) Pasteur d) Koch
c) Pasteur
This group showed that one gene codes for one enzyme: a) Avery and coworkers b) Watson and Crick c) Tyndall and coworkers d) Chargaff and coworkers e) Beadle and Tatum
e) Beadle and Tatum
A microscope that converts slight differences in the refractive index and cell density into easily detected variations in light intensity: a) darkfield microscope b) phase contrast microscope c) fluorescent microscope d) transmission electron microscope e) brightfield microscope
b) phase contrast microscope
Recognition proteins are most important for: a) facilitated diffusion of molecules b) active transport of molecules c) maintaining membrane integrity d) maintaining membrane fluidity e) distinguishing foreign cells from self cells
e) distinguishing foreign cells from self cells
A large aggregate of amoeboid cells that move as a unit leaving a slime trail: a) coenobium b) diatom c) pseudoplasmodium d) mastigophora e) tetrasporal
c) pseudoplasmodium
The acidic polysaccharides attached to cell wall of Gram positive bacteria are: a) lipopolysaccharides b) mucopolysaccharides c) glycocalyx d) teichoic acids e) peptidoglycan
d) teichoic acids
These people proposed that the DNA molecule has a double helix chemical composition: a) Shlieden and Schwann b) Hutton and Lyell c) Watson and Crick d) Mendel and Morgan
c) Watson and Crick
Protozoa are members of the: a) fungi b) plant kingdom c) animal kingdom d) monera e) protista
e) protista
The process through which vegetative cells are formed from endospores is called: a) sporulation b) germination c) chemotaxis d) osmosis
b) germination
An irregular network of branching and fusing membranes, tubules and sacs is called the: a) lysosomes b) mitochondria c) grana d) endoplasmic reticulum e) thylakoid
d) endoplasmic reticulum
Process of nuclear division in which the number of chromosomes is halved: a) mitosis b) meiosis c) parthenogenesis d) binary fission e) transformation
b) meiosis
An example of a spore forming bacteria is: a) mycobacterium smegmates b) Clostridium tetani c) Klebsiella pneumoniae d) Staphylococcus aureus
b) Clostridium tetani
Anton von Leeuwenhoek is best known for his studies involving: a) sterilization of food b) the cell as the basic unit of life c) the germ theory of disease d) single celled organisms observed with the early microscope
d) single celled organisms observed with the early microscope
Stacked sac-like membranes producing secretory vesicles: a) lysosomes b) mitochondria c) grana d) golgi apparatus e) thylakoid
d) golgi apparatus
Bacteria have a region of the cytoplasm that contains the chromosome: a) nucleoid b) plasmid c) protoplast d) nucleus e) mesosome
a) nucleoid
Hydrogenosomes are similar to mitochondria but hydrogenosomes lack: a) cristae b) stroma c) citric acid cycle enzymes d) electron transport chain enzymes needed in the flow of electrons e) a and c
e) a and c
Group of fungi that lack a classical sexual cycle: a) Ascomycete b) Phycomycete c) Basidiomycete d) Deuteromycete
d) Deuteromycete
Name the organism that causes amoebic dysentery: a) Shigella dysenteriae b) Bacillus subtilus c) Proteus mirabilis d) Entamoeba histolytica e) Salmonella typhi
d) Entamoeba histolytica
Technique using heavy metals to stain specimens at an angle approximately 45 degrees from the horizontal that provides a 3 dimensional image similar to shadowing with light: a) shadow casting b) fixation c) freeze etching d) thin sectioning e) negative staining
a) shadow casting
The main chemical component of bacterial flagellum is: a) flagellin b) tubulin c) dynein d) dipicolinic acid
a) flagellin
Flagella covering the entire surface of a bacteria are called: a) polar b) lopotrichous c) peritrichous d) amphitrichous e) cillia
c) peritrichous
Volvox spp. is an example of a: a) fungi b) yeast c) gram positive bacteria d) green algae e) diatom
d) green algae
An example of a apicomplexan parasite: a) Dictyostelium discoidium b) Toxoplasma gondii c) Methanococcus jannaschii d) Escherichia coli e) Chlamydomonas sp.
b) Toxoplasma gondii
Ribulose bisphosphate caboxylase (RubisCO) is an enzyme needed in the: a) Calvin cycle b) TCA cycle c) light dependent reaction d) Entner Douderoff pathway
a) Calvin cycle
The area of microbiology that studies resistance to infection is called: a) immunology b) industrial microbiology c) genetic engineering d) microbial ecology e) molecular microbiolgy
a) immunology
Name a bacteria that contains a glycocalyx: a) Staphylococcus aureus b) Bacillus subtillis c) Clostridium sporogenes d) Streptococcus pneumoniae
d) streptococcus pneumoniae
Siliceous cell walls are characteristic of the: a) coenobium b) diatom) c) plasmodium d) mastigophora e) sorocarp
b) diatom
Mitochondria and chloroplasts are different from other organelles in that the mitochondria and chloroplast: a) can make their own DNA and proteins b) have circular DNA c) have linear DNA d) a and b e) a and c
d) a and c
Well organized material that is outside the cell wall and is not easily removed: a) peptidoglycan b) slime layer c) capsule d) fimbrae e) teichoic acids
c) capsule
Pfiesteria piscicida is an example of a: a) fungi b) yeast c) red algae d) green algae e) dinoflagellate
e) dinoflagellate
In which of the following will you find the common bread mold Rhizopus nigricans: a) Basidiomycete b) Ascomycete c) Deuteromycete d) Zygomycete
d) Zygomycete
Give an example of a chemical that is found in a prokaryotic inclusion body: a) DNA b) dipicolinic acid c) teichoic acid d) glycogen e) ribosomes
d) glycogen
An example of a parabasalid is: a) Entamoeba coli b) Neurospora crassa c) Mycobacterium smegmatis d) Geotrichum candidum e) trichomonas vaginalis
e) Trichomonas vaginalis
The study of algae is called: a) virology b) mycology c) immunolgy d) phycology e) ornithology
d) phycology
