Water has fewer hydrogen atoms than lemon juice and a pH of around 7. Predict what will happen to the pH level of water when lemon juice is added.

A. The pH will become higher.
B. The pH will become lower.
C. The pH will remain the same.
D. There is not enough information to decide.


B. The pH will become lower.

Biology & Microbiology

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True or false? _____ Mutations always result in negative effects on the organism. _____ Mutations are always large-scale (e.g., involving at least 10,000 base pairs of DNA)

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Biology & Microbiology

Which of the following is not a polysaccharide?

A) extensin B) glycogen C) cellulose D) starch E) chitin

Biology & Microbiology

The main pollinators of flowers that have markings visible only under ultraviolet light are

A. birds. B. bees. C. beetles. D. flies. E. bats and moths.

Biology & Microbiology

The letter B” in the above figure represents its

a. shell. b. mantle. c. gills. d. siphon. e. none of these.

Biology & Microbiology