You have isolated an organism that contains endospore. You can assume that this cell lacks

A. cell wall
B. membrane-enclosed organelles
C. plasmid
D. pili
E. Not enough information to assume anything


Ans: B. membrane-enclosed organelles

Biology & Microbiology

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Indicate whether the statement is true or false.

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The typical osmolarity of most body fluids in humans and other mammals is

a. ~5 mOsm/L. b. ~225 mOsm/L. c. ~300 mOsm/L. d. ~1000 mOsm/L. e. ~1500 mOsm/L.

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All organisms that photosynthesize fit into which nutritional category?

A) mixotroph B) heterotrophs C) autotrophs D) parasites

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Which of the following characteristics could NOT be used to differentiate between the three worm phyla, Annelida, Platyhelminthes, and Nematoda?

a. Segmentation b. Growth by molting c. Presence of a complete gut, with two openings d. Bilateral symmetry e. The presence of eye spots

Biology & Microbiology