A normal event in the process of blood clotting is the _____
A) production of erythropoietin
B) conversion of fibrin to fibrinogen
C) activation of prothrombin to thrombin
D) increase in platelets
E) synthesis of hemoglobin
Answer: C
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What is a single-nucleotide polymorphism?
A. any point mutation B. the presence of single nucleotides in the DNA double helix C. a site where a restriction enzyme cuts D. a site where RNA polymerase binds to DNA E. None of the above is correct.
This protozoa has a trophozoite stage but no cyst stage and reproduces via longitudinal binary fission. The parasite belongs to which category?
a. Amebae b. Flagellates c. Ciliates d. Microsporidia
Answer the following statements true (T) or false (F)
1. Two species that occupy identical realized niches will not be able to co-exist for an extended period of time. 2. Chemical defenses are found only among animals. 3. The mimicry of coral snakes by scarlet king snakes is an example of Batesian mimicry. 4. Fleas are endoparasites.
Antibiotics have ____ cells as their targets.
A. animal B. eukaryotic C. fungus D. bacterial