Suppose that a researcher exposes a noninfective form of the bacterium Streptococcus pneumoniae to heat-killed cells of an infective strain. Which process of genetic exchange is most likely to occur between the strains?

a. conjugation
b. re-infection
c. transduction
d. transformation


Ans: d. transformation

Biology & Microbiology

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An allele is ____ if its effect masks that of a ____ allele paired with it

a. recessive; codominant b. codominant; recessive c. recessive; dominant d. dominant; recessive

e. incompletely recessive; dominant

Biology & Microbiology

HIV’s primary genetic instructions are in the form of ____

a. DNA b. RNA c. proteins d. amino acids e. DNA and RNA

Biology & Microbiology

All of the following are types of connective tissue EXCEPT which one?

A) bone B) cartilage C) blood D) muscle E) adipose

Biology & Microbiology

In three sentences or less, explain why a plant placed in a window grows toward the light. What will be an ideal response?

Biology & Microbiology