Who first demonstrated transformation using mice and two strains of Streptococcus pneumoniae?

A. Hershey and Chase
B. Watson and Crick
C. Jacob and Monod
D. Avery, McCarty, and MacLeod
E. Griffith


Answer: E

Biology & Microbiology

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A modification that occurs to a nuclear gene that alters gene expression without modifying the DNA sequence is called _______ inheritance

A. extranuclear B. cytoplasmic C. maternal effect D. epigenetic E. nuclear

Biology & Microbiology

If you forgot to apply the safranin counterstain while performing a Gram stain, which outcome would you expect?

A. Gram-positive bacteria would stain pink. B. Gram-negative and Gram-positive bacteria would be unstained. C. Gram-negative bacteria would be unstained. D. Gram-negative bacteria would stain purple.

Biology & Microbiology

Which of the following cells are alive at maturity?

a. sieve tube members b. vessel members c. tracheids d. fibers e. sclereids

Biology & Microbiology

The location of a gene on a chromosome is called a(n) ________

Fill in the blank(s) with correct word

Biology & Microbiology