Microbial Growth, Metabolism, and Genetics

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

Tags

NGSS.HS-LS2-3

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

Tags

NGSS.HS-LS1-7

Which metabolic pathway generates the most ATP?

• aerobic respiration

• anaerobic respiration

• fermentation

• glycolysis

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

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 N_t=N_i 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