Which of the following statement(s) about the shells of diatoms is(are) true?
a. They are symmetrical.
b. They are made up of silica.
c. They have perforations.
d. They are symmetrical and are made up of silica.
e. They are symmetrical, are made up of silica, and have perforations.
E
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Amino acids, fatty acids, sugars, and nucleotides are produced during which metabolic reaction?
a. Fueling b. Biosynthesis c. Polymerization d. Assembly
When cloning DNA into bacteria, the ____
a. DNA sequence is inserted into a plasmid b. DNA sequence is inserted into the bacterial chromosome c. linear DNA sequence is circularized, thus generating a plasmid d. new DNA is directly introduced into the bacterial cell e. approach depends on the species of host bacteria used in the experiment
The "small" in the small intestine refers to its length
Indicate whether the statement is true or false.
An individual's set of unique _____ can be used as a DNA profile
a. DNA sequences b. short tandem repeats c. SNPs d. all of these