Algae in a swimming pool are ____; Escherichia coli bacteria in the human intestine are ____.

A. autotrophs; autotrophs
B. heterotrophs; heterotrophs
C. autotrophs; heterotrophs
D. heterotrophs; autotrophs


Ans: C. autotrophs; heterotrophs

Biology & Microbiology

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Choose the true statements about the human and mouse genomes. 

_____ The human genome shares 99% of its genes with the mouse genome. _____ A comparison of genomes confirms that mice and humans shared a common ancestory more recently than humans and pufferfish. _____ Very few genes are conserved in the two genomes. _____ Little rearrangement of genes has occurred in the two genomes.

Biology & Microbiology

Which structure, A, B, C or D, is the cochlea?

1.A 2.B 3.C 4.D

Biology & Microbiology

Which event of translation is shown here?

a. initiation b. elongation c. termination d. peptide bond formation e. elongation and peptide bond formation

Biology & Microbiology

Each of the following events actually occurs. Which case would be included in the definition of sexual reproduction? 

A. The female sex cell of a flower develops into a new generation after receiving the male sex cell from the same flower. B. A female sex cell develops into a new individual without fertilization. C. Three new plants develop from three branches cut from a plant and placed in potting soil. D. Twins develop.

Biology & Microbiology