A developing country's replacement fertility rate is most directly affected by which factor?
A. Poverty
B. Endemic diseases
C. Death of children before the age of reproduction
D. Environmental factors that disrupt fetal development
E. Government-directed population control
Answer: C
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The Mesozoic era was not only the age of the dinosaurs, but also the age of the ____ because they were the most
dominant plants of that time.
a. progymnosperms b. gymnosperms c. angiosperms d. eudicots e. monocots
Which of the following is a mismatch between a
urinalysis result and its possible cause? a. acidic urine; metabolic problem b. alkaline urine; bacterial infection c. excess protein; kidney disease d. excess solutes; diabetes insipidus e. glucose in urine; diabetes mellitus
Studies of glucose transport in liposomes have revealed that:a
glucose is transported against a concentration gradient. b. the binding of glucose triggers a conformational change in the carrier protein. c. the transport of solutes via carrier proteins is faster than via channel proteins. d. glucose phosphates move readily across the membrane by simple diffusion. e. glucose moves readily across the membrane by simple diffusion
Individuals who are ____ for sickle cell hemoglobin tend to be ____ resistant to falciparum malaria, but do not
experience the effects of sickled red blood cells.
a. homozygous dominant; more b. homozygous dominant; less c. homozygous recessive; less d. heterozygous; more e. heterozygous; less