All of the following are part of a prokaryotic cell EXCEPT _____

A) DNA
B) a cell wall
C) a plasma membrane
D) ribosomes
E) an endoplasmic reticulum


Answer: E

Biology & Microbiology

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Which of the treatments listed below would be MOST effective for a patient with a genetic defect that causes severe combined immunodeficiency (SCID)?

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Bread making requires yeast, flour and water. Why is yeast used?

A. It makes the bread healthier as yeast is a source of vitamins. B. It makes the bread rise due to the carbon dioxide released during ethanol fermentation. C. It makes the bread rise due to the carbon dioxide released during cellular respiration. D. It makes the bread sour due to lactic acid fermentation. E. It makes the bread crunchy.

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Members of the phyla Ectoprocta, Brachiopoda, and Phoronida all possess a lophophore, which isa(n) ____

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Biology & Microbiology

Scientists depend on systematic observations to develop systems to classify organisms. The classification system most commonly used by scientists consists of different categories arranged in a hierarchy. Which level represents the most exclusive category or group?

A) species B) order C) phylum D) class

Biology & Microbiology