WorksheetsAcidophiles
Total questions: 18
Worksheet time: 14mins
What do you call an organism that thrives in acidic environments.
acidophile
endophile
thermophile
Alkaliphile
Which of the following is a correct source where acidophiles are located
Freshwater
Saltwater lakes
Acid mine drainage
Acid rain
Acidophilic bacteria involved in making acetic acid ____
Thiooxidans ferroxidans
Acidophilus thiooxidans
Acetobacter aceti
Thermopasmatales
Which of the following mechanism is used by acidophilies to maintain inner pH?
Apoptosis
Cytolysis
Proton efflux
Phagocytosis
Acidophiles belong to which group of following
Archeae
Eubacteria
Both archeae and eubacteria
None of the above
Acidophile can synthesis pH resisting enzyme like _____
Pepsin
Lipase
Kinase
Trypsin
Impermeability of cell membrane of an acidophile is due to presence of
Tetra ether lipids
Muramic acid
Phospholipids
Sphingo lipids
Genome of ________ is smaller than neutrophiles
Barophiles
Psycrophiles
Acidophiles
Thermophiles
Which is the best place to find acidophiles
Drainage
Arctic ocean
Salt lake
Hydrothermal vents
Despite environment being acidic acidophiles manages to keep their internal pH near to neutral because of
DNA repair system
Chemotaxis
Impermeability of cell wall
Phagocytosis
Acidthiobacillus ferooxidans cell membrane consists ___________ fatty acids
Cyclopropane
Beta hydroxy
Omega cyclohexyl
None of the above
Which planet would host the life of an acidophile?
Venus
Earth
Neptune
Jupiter
Bacteria that causes gastritis thought to be an acidophile but in fact it is a neutrophile.
Helicobacter pylori
Staphilococcus aureus
Escherichia coli
Lactobacillus casei
In acidophilic bacteria, multiple systems having the same physiological role are operating at different cytoplasmic pH values.
True
False
Partially true
Acid stable proteins are,
soxF
DnaK
NAPase
DHFR
Chaperones that protect enteric bacteria from acidic conditions are
HdeA
soxF
DHFR
HdeB
Extreme pH affects the macromolecules such as
Proteins
Carbohydrates
Nucleic acid
All of these
Proton pump actively removes ________ from cell to maintain internal pH.
K+
Na+
H+
OH-
