Tiny molecules of dna that infect plants
What will be an ideal response?
viroids
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Cleavage divisions proceed at approximately the same rate in the embryo of _______, reflecting
uniform distribution of yolk.
a. bird b. human c. sea urchin d. frog e. sea urchin and human
The function of fruit is to
A. attract pollinators. B. supply nutrients to the embryo. C. protect and help disperse seeds. D. protect flower buds.
Mucus occurs in both the respiratory and digestive tracts. What is its main immunological function?
A) sweeping away debris B) physically trapping pathogens C) destruction of pathogens because it is acidic D) increasing oxygen absorption
An accident victim receives a blood transfusion. Shortly thereafter, he begins to have difficulty breathing, develops a fever, and experiences nausea and vomiting. Which of the following is the most likely interpretation of these events?
A) The blood transfusion was mismatched. B) The blood transfusion contained pyrogens. C) The recipient had previously been exposed to foreign blood group antigens. D) The blood transfusion was mismatched and contained pyrogens. E) The blood transfusion was mismatched and the recipient had previously been exposed to the foreign blood group antigens.