If you were looking within a cell for organized clathrin structures, you would find them associated with which of the following structures?
A) lysosomes
B) trans Golgi complex
C) endoplasmic reticulum
D) inner membrane of mitochondria
E) extracellular matrix
B) trans Golgi complex
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The hypothesis that suggests that clay may have served as the site of polymerization of both nucleic acids and proteins that might have joined to form the first protocells was proposed by
A. Stanley Miller. B. Graham Cairns-Smith. C. Thomas Cech. D. Aleksander Oparin. E. Sidney Fox.
Which of the following characteristics tends to limit bryophytes and seedless vascular plants to habitats that are relatively moist?
A) absence of cuticle B) presence of flagellated sperm C) presence of free-living, independent zygotes and early embryos D) absence of lignified vascular tissues
If you perform an indirect ELISA specific for Lyme Disease on a patient that was bitten by a tick carrying Borrelia bergdorferi only 2 days ago, what would you expect the results to be?
A) Negative, because it is unlikely that the patient is producing antibodies to Borrelia bergdorferi after only 2 days. B) Positive, since the patient was infected with Borrelia bergdorferi by the tick bite. C) Negative, because Borrelia bergdorferi does not cause Lyme Disease. D) Positive, since the ELISA will detect Borrelia bergdorferi in the patient's serum.
The first known member of the genus Homo is ____
a. H. erectus b. H. sapiens c. H. neanderthalensis d. H. habilis e. H. floresiensis