Which bacterial groups have a gram- positive cell wall?

a. actinobacteria
b. firmicutes
c. both actinobacteria and firmicutes
d. proteobacteria


Ans: c. both actinobacteria and firmicutes

Biology & Microbiology

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__________ are produced in organs known as __________

a. Gametes; gonads b. Gonads; gametes c. Sperm; spermatocytes d. Eggs; uterus

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In one of these years, there was a drought. Which year does it appear to be?

a. 2009 b. 2010 c. 2011 d. 2012

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Which group of animals has one-way flow of air through its lungs, whereas all the others have tidal flow?  

A.  mammals B.  amphibians C.  birds D.  reptiles

Biology & Microbiology

Fossils have been discovered for about how many species?

A. 10,000 B. 50,000 C. 100,000 D. 150,000 E. 250,000

Biology & Microbiology