Which one of the following cell types would likely have the most extensive system of smooth endoplasmic reticulum?
A. skin cells
B. pancreatic cells that secrete digestive
enzymes
C. testicular cells
D. central nervous system cells
E. muscle cells
Answer Key: C
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Andrew is studying bone development and calcium absorption in elephants. Which vitamin is
likely an important component of his study?
a. vitamin D b. vitamin A c. vitamin K d. vitamin B
Vascular bundles primarily contain ________
a. pith and cortex b. epidermis c. parenchyma d. xylem and phloem
Which of the following is NOT true for a population
growing exponentially? a. The number of individuals added to the population in a year is greater than it was the previous year. b. The population growth rate increases year after year. c. Its r remains constant in the short-run. d. The doubling time remains constant. e. All of these are NOT true.
What is the role of FMN in complex I?
A) Converts a two-electron transfer to a one-electron transfer. B) Converts a one-electron transfer to a two-electron transfer. C) Transports four H+ across the membrane. D) None, there is no FMN in complex I.