The presence of cytoplasmic organelles is characteristic of
a. Archaea only.
b. Bacteria only.
c. both Archaea and Bacteria.
d. neither Archaea nor Bacteria.
e. Achaea, Bacteria and Eukarya.
D
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Which organism may be mistaken for a lactose fermenter on MacConkey agar because of colonies exhibiting a purple hue on the media?
a. Acinetobacter spp. b. P. luteola c. S. maltophilia d. Bordetella holmesii
Imagine you have extracted myosin molecules from both fast and slow muscle fibers and are measuring the rate at which these proteins hydrolyze ATP. What would these relative rates of ATP hydrolysis be?
A. fast fiber > slow fiber B. slow fiber > fast fiber C. slow fiber = fast fiber
Which reproductive isolating mechanism is displayed in a mule, the product of a cross between a horse and a donkey?
a. mechanical isolation b. hybrid inviability c. hybrid sterility d. hybrid breakdown e. temporal isolation
In the process of blood clotting, platelets ____
a. engulf and digest cellular debris b. release substances that repel more platelets c. convert fibrin into fibrinogen d. clump together e. do nothing as they are not involved in clotting.