Amoebas move by

A. cilia.
B. gliding mechanisms.
C. flagella.
D. pseudopods.
E. All the choices are correct.


Answer: D

Biology & Microbiology

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A portion of a DNA molecule wound around a "bead" of histone protein is called a

A) cell cycle. B) nucleosome. C) spindle. D) centromere. E) furrow.

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Which of the following statements about ribosomes is false?

A) A ribosome consists of two subunits. B) Ribosomal subunits are made of proteins and ribosomal RNA. C) The ribosomes of prokaryotes and eukaryotes are the exactly the same in structure and function. D) Each ribosome has two binding sites for tRNA molecules.

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Some pathogens produce toxins which function as (histamines/prostaglandins/pyrogens) to cause fever

What will be an ideal response?

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In what way are a human and a crab similar?

A. Vertebrates and arthropods are deuterostomes. B. Both have closed circulatory systems. C. Both have muscles that pull against rigid skeletons. D. Both have a continuous growth pattern.

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