What is an organic compound?
A. A molecule that contains a nitrogen skeleton
B. A molecule that contains both carbon and nitrogen
C. A molecule that contains carbon bonded to other elements
D. A molecule that contains nitrogen bonded to other elements
Answer: C
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A woman is being treated for systemic lupus erythematosus (SLE). She has an increased risk of opportunistic infections. Based on what you know about SLE and the treatment for it, propose why she has an increased risk of opportunistic infections
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The bones in the forelimbs of a mammal ____
a. can often be traced to a common ancestor b. offer no evidence to support the theory of evolution c. perform the same function no matter which species they are in d. may exhibit either analogy or homology but not both when compared to the forelimb of another animal e. show convergence with some invertebrate structures
Assume that in a series of experiments, plants with round seeds were crossed with plants with wrinkled seeds and the following offspring were obtained: 220 round and 180 wrinkled
(a) What is the most probable genotype of each parent? (b) What genotypic and phenotypic ratios are expected? (c) Based on the information provided in part (b), what are the expected (theoretical) numbers of progeny (400 total) of each phenotypic class?
Desert plants have waxy coatings to help reduce water loss. Many also have modified leaves in the shapes of needles to reduce surface area and reduce water loss. These modifications are examples of :
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