How many Barr bodies would you expect to see in the cells of an individuals with sex chromosome complement XXX?
A) 0
B) 1
C) 2
D) 3
E) 4
Answer: C
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The main solutes in the filtrate as it enters the distal convoluted tubule are (select all correct choices):
A. urea. B. electrolytes. C. other wastes. D. amino acids. E. nucleotides.
What is true of the differences between chemical and electrical synapses?
a. Signals across chemical synapses are sometimes bidirectional. b. Electrical synapses are only found in the brain. c. Neurons are physically connected across electrical synapses. d. Only charged ions can travel across electrical synapses.
What is similar about G protein-coupled receptors (GPCRs) and receptor tyrosine kinases (RTKs)?
A. Both are directly bound to G proteins. B. Both bind to hydrophobic ligands. C. Both are activated by autophosphorylation. D. Both can activate phospholipase C. E. Both are enzymes.
Passing on traits or characteristics that were acquired during the lifetime of an organism to its
offspring is a concept that is attributed to: a. Alfred Wallace. b. Charles Darwin. c. Charles Lyell. d. Jean Baptiste de Lamarck. e. Thomas Malthus