The total magnification achieved in the laboratory when using the oil immersion objective of the compound light microscope is:

A) 40×.
B) 100×.
C) 400×.
D) 1,000×.


D) 1,000×.

Biology & Microbiology

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Legionellosis, caused by the bacterial respiratory pathogen Legionella pneumophila, has decreased in recent years due to advances in wastewater treatment procedures

Indicate whether the statement is true or false.

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How many reactions in glycolysis directly generate ATP?

A. 1 B. 2 C. 3 D. 4 E. 5

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Which of the following is not part of the mismatch repair (MMR) mechanism?

A. MutS and MutL form a complex at the site of the mismatch and while scanning in both directions along the DNA form a loop. B. Mismatched bases are recognized by MutS. C. When the MutS/MutL complex finds a GATC site, MutH binds to the complex and cleaves the methylated strand. D. Helicase and exonuclease activities unwind and degrade the strand containing the mismatched base. E. Pol III fills the gap and ligase seals the DNA strand.

Biology & Microbiology

A saturated fatty acid contains (no/one/multiple) double bonds

What will be an ideal response?

Biology & Microbiology