Megakaryocytes
A. give rise to platelets.
B. produce fibrin for blood clotting.
C. carry carbon dioxide in the blood.
D. are important in the immune response.
Answer: A
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Indicate whether the statement is true or false
The oxygen consuming property of a wastewater sample is designated by the term
A. lagooning. B. stabilization. C. activation. D. biochemical oxygen demand.
Which of the following differentiates marshes and swamps from bogs?
a. Marshes and swamps have no moving water. b. Bogs are devoid of plant life. c. Bogs have very little or no moving water. d. Marshes and swamps have more insect life than bogs.
his4 TRP1; his4 TRP1; HIS4 trp1; HIS4 trp1
A haploid yeast strain has mating type a and genotype his4 TRP1. A different haploid yeast strain has mating type ? and genotype HIS4 trp1. The two strains mate and produce diploid offspring with genotype his4 TRP1 / HIS4 trp1. The diploid cells undergo meiosis to produce a variety of tetrad types. In the following questions, the genotypes of the spores in a tetrad are shown. For each tetrad, tell what type it is: parental (PD), non-parental (NPD), or tetratype (T). A) PD B) NPD C) T D) cannot be determined