The California current carries cold water towards the equator. It is described as being slow moving and having wide, loose boundaries. What kind of current would it be classified as?
a. Eastern boundary current
b. Equatorial current
c. Transverse current
d. Western boundary current
a
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Which of the following lists the organization of a mammalian body from least to most complex?
A. Tissue—cell—organ system—organ B. Organ system—organ—tissue—cell C. Cell—tissue—organ—organ system D. Tissue—organ—cell—organ system E. Organ—organ system—tissue—cell
Is the resting membrane potential of a neuron closer to the equilibrium potential for K+ or Na+?
A. K+ B. Na+ C. It is an average of the two.
All ecosystems
A. are entirely self-sufficient. B. None of the answer choices is correct. C. need a source of external energy. D. stay exactly the same once mature. E. consist of only living organisms.
The yeast genome is approximately 1/250 the size of the human genome and yet it contains approximately 1/5 the number of genes. Which of the following is the BEST explanation for this?
A) The genes in yeast contain far fewer codons compared to human genes. B) The yeast genome contains many overlapping genes. C) Yeast chromosomes contain much smaller centromeres and telomeres. D) The yeast genome contains much less intergenic DNA and fewer introns. E) Amino acids in yeast are coded for by two-base sequences instead of three-base sequences as found in humans.