Which of the following habitats is most likely to be

rich in fossils?
a. eroding hillsides
b. deserts
c. polar ice caps
d. a bed of a former shallow sea
e. rocky plateau


Answer: d

Biology & Microbiology

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Bacteriophage have a ________ complex structure than animal viruses, because ________

A) more / bacteriophages must be coated by lipopolysaccharide to attach to bacterial cells B) less / the bacteriophage does not have to penetrate the nucleus C) more / the bacteriophage must penetrate the peptidoglycan cell wall D) less / there prokaryotic cells have a simple structure compared to eukaryotic cells

Biology & Microbiology

The organism in the accompanying figure is a representative of the:a

phylum Hemichordata. b. phylum Echinodermata. c. phylum Chordata. d. subphylum Urochordata. e. subphylum Cephalochordata.

Biology & Microbiology

All of the following are examples of symbiotic relationships except 

A. algae and fungi living together as a lichen. B. the protozoa that live in the intestine of termites and digest cellulose that termites cannot digest. C. the mosquito that visits a mammal for a blood meal. D. the malaria parasite that lives in the liver of humans.

Biology & Microbiology

The genome of phiX174 is ________.

A. double-stranded RNA B. single-stranded RNA C. single-stranded DNA D. double-stranded DNA

Biology & Microbiology