Antibodies can clump pathogens together in a process known as ______.
A. covalent cross-linking
B. gluon formation
C. Fc attachment
D. agglutination
Answer: D. agglutination
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Scientists using RNA in situ hybridization techniques observed that a transcription factor called macho-1 localized to some cells during early cleavage, but not others. Descendents of the cells expressing macho-1 produced mesoderm
If you prevented the expression of macho-1 in an embryo during cleavage, which structures would be most likely be absent in later development? A) neural tube B) somites C) digestive system D) skin
The development of a cancer requires both the _______ of an oncogene and the ________ of a tumor suppressor
A. activation; inhibition B. inhibition; activation C. inhibition; inhibition D. activation; activation
Imagine that you are an archaeologist on a dig somewhere on an East Asian island and than you begin to excavate an area littered with stone tools that also has the remains of an ancient fire
Subsequent carbon dating of the charcoal from the fire yields a date of 100,000 years before the present. Given these circumstances, which species would you expect most likely set that fire? A) Australopithecus afarensis B) Homo erectus C) Homo ergaster D) Ardipithecus ramidus
Pasteurization is a more rigorous process than canning
Indicate whether the statement is true or false