What was likely the first informational molecule of life?
A. carbohydrates
B. lipids
C. proteins
D. RNA
E. DNA
Answer: D. RNA
Biology & Microbiology
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There is at least one known virus whose genome is actually larger than a cellular genome
Indicate whether the statement is true or false.
Biology & Microbiology
Which protists have two flagella that make them spin and move forward?
a. dinoflagellates b. ciliates c. apicomplexans d. rhizarians e. euglenoids
Biology & Microbiology
The parts of the plant that allow for gas exchange are the
A. xylem. B. stomata. C. roots. D. phloem. E. cuticle.
Biology & Microbiology
A rapid method of sympatric speciation in plants is `
A) polyploidy. B) genetic drift. C) the sudden creation of a geographic barrier. D) behavioral isolation.
Biology & Microbiology