If a cell contains lysosomes, what type of cell must it be?

a. a fungal cell
b. a prokaryotic cell
c. an animal cell
d. a plant cell


Answer: c. an animal cell

Biology & Microbiology

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If the genetic code contained six nucleotides instead of four, and each amino acid were specified by a single codon, how many unique codons would exist?

a. 144 b. 96 c. 216 d. 256

Biology & Microbiology

Scientists are always thinking about ways to improve experimental design. In the text's potato chip experiment, which

of these changes would produce the most effective design?

a. Show a different movie. b. Exclude teenagers as group members. c. Collect uneaten chip remains and weigh them for both groups. d. Provide free drinks before the experiment. e. Use a smaller theater.

Biology & Microbiology

Striated muscle has light and dark bands. The light bands are called ________, whereas the dark bands are called ________

A) Z lines; M lines B) H zones; M zones C) A bands; I bands D) I bands; A bands E) M lines; A bands

Biology & Microbiology

Ions are atoms or molecules that carry an electrical charge sure to the gain or loss of:

A) protons B) electrons C) neutrons D) positrons

Biology & Microbiology