Structural Isomers

question 62

Multiple Choice

Structural isomers

• A)contain the same number of atoms/elements,but in different arrangements.
• B)are exemplified by glucose and galactose.
• C)are formed by different arrangements of the -COOH groups.
• D)may be referred to as the -D and -L forms.
• E)contain the same number of atoms/elements,but in different arrangements AND are exemplified by glucose and galactose.

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Definitions:

Chromatids

Each of the two thread-like strands into which a chromosome divides longitudinally during cell division. Each contains a double helix of DNA.

Rotating Flagella

Hair-like structures that protrude from the cell body of certain bacterial cells, rotating like propellers to enable movement.

Cilia

Microscopic, hair-like structures that extend from the surface of many animal cells, involved in movement and sensory functions.

Pili

Hairlike structures on the surface of many bacteria; function in conjugation or attachment. A sex pilus forms a cytoplasmic bridge with another bacterium and transfers DNA via this bridge.