In a basic staining procedure, which is the correct order?
A.
Fix, smear, stain
B.
Smear, fix, stain
C.
Fix, stain, decolorize
D.
Smear, decolorize, stain
B
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. Rubella is a member of which virus family?
A. Paramyxo virus B. Herpes C. Togavirus D. Papovavirus
The common ancestor of all cells lived ________ years ago
a. 4.3 billion b. 7.4 billion c. 2.3 million d. 200 million e. 13 billion
At the beginning of a research project on egg laying in seagulls, a researcher noted that the birds laid an average of 7-9 eggs per clutch. After studying the population for 15 generations, the researcher noted that the birds were now laying 3-4 eggs per clutch. What type of natural selection is occurring in the population of gulls?
A. directional B. stabilizing C. disruptive D. There is no selection occurring in this population.
Animal cell centrosome MTOCs contain
A) condensins. B) cyclin-Cdk. C) centrioles. D) mitochondria. E) phragmoplasts.