Final Practice

DNA was shown to be the transforming substance when only the _____ enzymes could inhibit
transformation

• proteinase

• RNAase

• DNAase

• lipase

Which feature is found in a bacterial cell?

• methanol

• nucleus

• cell membrane

• chloroform

• Golgi apparatus

The sum of the chemical reactions in a cell constitute

• coupling reactions

• free energy

• endergonic reactions only

• exergonic reactions only

• metabolism

A university biology department wishes to hire a scientist to work on the relationships among
the wolves, moose, trees, and physical features on an island. If you were charged with writing
the job description, you should title the position

• population geneticist

• molecular biologist

• ecosystem ecologist

• organismal physiologist

• island zoologist

One of Chargaff's rules states that

• A=T and G=C

• A=C and T=G

• A=G and T=C

• A=T + G + C

An amino sugar called N-acetylmuramic acid is an important building block of the cell
wall of some bacteria. Penicillin prevents this amino sugar from being incorporated into
the bacterial cell wall. Based on this information, which statement is true.

• Penicillin affects bacteria but not eukaryotic animals cells

• Penicillin affects bacterial cell walls and eukaryotic plant cell walls.

• Penicillin affects bacterial flagella

• Penicillin affects bacterial Lysosome

Which organelles are involved in a redox cycle?

• Golgi complexes and lysosomes

• mitochondria and chloroplasts

• endoplasmic reticulum and vesicles

• vacuoles and vesicles

• mitochondria and endoplasmic reticulum

Which listing correctly indicates a sequence of increasing biological organization?

• molecule, cell, organelle, atom

• organelle, tissue, cell, molecule

• organ, tissue, atom, molecule

• atom, molecule, organelle, cell

In the Watson and Crick model of DNA, the "steps" of the ladder are composed of

• sugars

• a purine and a pyrimidine

• two purines

• two pyrimidines

• a sugar and a phosphate molecule

Which of the following organelles is found in autotrophic eukaryotic cells but not
heterotrophic eukaryotic cells?

• lysosomes

• ribosomes

• rough endoplasmic reticulum

• chloroplast