What specialized cells receive and respond to stimuli?
Answer: neurons
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Organisms that take up inorganic nutrients and convert them to organic molecules such as carbohydrates and proteins are called _______________
A. predators B. consumers C. herbivores D. primary producers E. heterotrophs
During a Type I hypersensitivity reaction, the mast cells
A. become phagocytic. B. release IgE antibodies. C. degranulate. D. immediately release histamine. E. degranulate AND immediately release histamine.
A researcher is using adult stem cells and comparing them to other adult cells from the same tissue. Which of the following is a likely finding?
A) The cells from the two sources exhibit different patterns of DNA methylation. B) Adult stem cells have more DNA nucleotides than their counterparts. C) The two kinds of cells have virtually identical gene expression patterns in microarrays. D) The nonstem cells have fewer repressed genes.
The frequency of crossing over between any two linked genes is
A) higher if they are recessive. B) different between males and females. C) determined by their relative dominance. D) the same as if they were not linked. E) proportional to the distance between them