The ability to stain protein molecules with a fluorescent dye would most clearly allow researchers to go beyond what they could previously detect with a microscope by allowing them to
A) detect ribosome activity.
B) detect when DNA is replicating.
C) distinguish a prokaryote from a eukaryote.
D) determine whether a cell had cilia or flagella.
Answer: A
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impulse has passed?
a. ion channels b. active transport pumps c. passive carrier proteins d. exocytosis e. simple diffusion through the plasma membrane
Henrietta Lack died of
a. cervical cancer. b. breast cancer. c. polio. d. malaria. e. old age
Cystic fibrosis is one of the most common genetic diseases among individuals of European ancestry, and affects one newborn in approximately how many?
A) 10 B) 100 C) 250 D) 2,500 E) 10,000
Basic dyes such as methylene blue bind to cellular molecules that are ________.
A. positively charged B. hydrophobic C. negatively charged D. aromatic