Which issue has not been significant in the creation of genetically modified (GM) organisms?
A) some plants carrying genes from other species representing a possible threat to the environment
B) inability of GM organisms to be modified to prevent them from reproducing once they pass beyond the experimental stage
C) the fact that rogue microbes might transfer dangerous genes into other organisms
D) the fact that the protein products of transplanted genes might lead to allergic reactions
Answer: B
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Organisms are composed of molecules, which are collections of smaller units, termed:
A. monomers. B. atoms. C. electrons. D. polymers. E. ions.
Intellectual disability can result if a baby does not receive enough oxygen during labor or birth. Which cause of intellectual disability best describes this situation?
A) Abnormal genes or chromosomes B) Environmental exposure to toxins C) Malnutrition D) Noninherited birth defects
In this illustration, some of the organisms are vertebrates while others are both vertebrates and amniotes. Which of the following pairs are in both clades?
a. lancelets and lampreys
b. lampreys and humans
c. rabbits and lizards
d. lancelets and rabbits
A person who lives in an area where food is severely deficient in iodine may have ___________, which presents with a swollen thyroid gland.
A. hepatitis B. goiter C. acromegaly D. diabetes E. osteoporosis