Diatomaceous earth is the fine powder produced from grinding the fossilized shells of diatoms
Indicate whether the statement is true or false.
T
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Which technique is appropriate for studying protein-protein interactions?
a. nuclear magnetic resonance b. mass spectrometry c. protein microarrays d. x-ray crystallography
The production of random evolutionary changes in small breeding populations is known as
a. gene flow. b. genetic drift. c. disruptive selection. d. mutation. e. natural selection.
If nondisjunction occurs during meiosis I, ____
a. two gametes will be normal and two will be missing one chromosome b. two gametes will be normal and two will have one extra chromosome
c. three gametes will be normal and one will have two extra chromosomes d. all gametes will be normal e. all gametes will be abnormal
Endospore staining was performed on a culture of Sporosarcina, only pink cells were observed on the slide. What does this slide suggest?
A) Sporosarcina is not an endospore forming bacteria B) The culture of Sporosarcina was in a vegetative state C) The counterstain was not applied to the slide during the staining procedure