Introduction Practice Quiz

*1. Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. Which of the following could be an unavoidable source of experimental error?
length of the study
variation in the strawberry plants
the cost of watering the plants
fertilization during the study

*2. A computer model of cellular mitosis can simulate the aspects of cellular division quite well. However, microscopic observation of actual cellular mitosis can improve understanding because actual observations
may reveal greater unknown complexities.
are easier than a computer model to view.
are the same each time.
may provide division events in sequence.

*3. What causes tomatoes to ripen much more slowly in a refrigerator than they do if left on a table at room temperature?
Tomatoes need sunlight to ripen.
Humidity accelerates the ripening process.
Low temperatures reduce the action of ripening enzymes.
Enzymes produced by bacteria inhibit ripening.

*4. Although there are a limited number of amino acids, many different types of proteins exist because the
size of a given amino acid can vary.
chemical composition of a given amino acid can vary.
sequence and number of amino acids is different.
same amino acid can have many different properties.

*5. The clear protein of an egg white becomes opaque and firm when cooked because the heat
mutates the DNA.
turns the protein into carbohydrates.
stops protein formation.
changes the protein structure.


Score =
Correct answers:

*taken from 2003, 2004, 2005 CDE Released Test Questions-http://www.cde.ca.gov/ta/tg/sr/css05rtq.asp


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