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WorksheetsMicrobial Growth, Metabolism, and Genetics
Total questions: 15
Worksheet time: 14mins
Which group of organisms is most likely to infect humans (hint: human body temp is ~37C)
psychrophiles
mesophiles
thermophiles
hyperthermophiles
Which group of organisms will use oxygen if it is present, but can survive without it?
obligate aerobe
obligate anaerobe
facultative anaerobe
aerotolerant anaerobe
During which phase of growth are antibiotics most effective (because most of the organisms are dividing)?
lag
log/exponential
stationary
death
Breaking large molecules into smaller molecules would be considered?
anabolism
catabolism
Which metabolic pathway generates the most ATP?
aerobic respiration
anaerobic respiration
fermentation
glycolysis
Which step of aerobic respiration generates the most ATP?
glycolysis
processing of pyruvate
TCA cycle
electron transport chain
Where does the TCA cycle occur in a prokaryotic cell?
mitochondria
chloroplast
nucleus
cytoplasm
Where on an enzyme does a substrate bind?
active site
deep pocket
key hole
domain of catalysis
E. coli undergoes binary fission approximately every 20 minutes. If a culture started with 1000 cells, how many cells would be there be after 3 hours? (Remember Nt=Ni x 2n)
64,000
1,048,576,000 (1.0 x 109)
512,000
8000
If you saw a piece of DNA that contained both introns and exons, what type of organism would you assume it came from?
prokaryote
eukaryote
virus
prion
What base does cytosine pair with?
adenine
thymine
uracil
guanine
What nitrogenous base is missing from RNA?
adenine
thymine
uracil
guanine
cytosine
Which RNA contains the message that will be translated into protein?
mRNA
tRNA
rRNA
siRNA
If you were given the DNA sequence below, what would be the complementary mRNA sequence?
DNA: 5'-ATGCAT-3'
3'-TAGTAC-5'
3'-TACGTA-5'
3'-UACGUA-5'
3'-AUGCAU-5'
What kind of mutation results from a normal codon becoming a stop codon as seen in the image above?
missense mutation
nonsense mutation
stop mutation
silent mutation
