Which of the following would be found as part of a plant cell but not an animal cell?
A) cytoskeleton B) gap junction C) ribosomes D) chloroplasts
Answer: D
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What challenges does respiration in water present? Check all that apply.
_____ The density of water is very high relative to air. _____ Water holds approximately 30 times less oxygen when compared to air. _____ Water requires an additional energy expenditure to move across epithelial surfaces. _____ Water moving across respiratory surfaces removes heat from the animal. _____ Water breathing animals have a high risk of desiccation.
In fragile X syndrome, the fragile X gene contains the nucleotide triplet CGG that repeats 200-1000
times. Indicate whether the statement is true or false.
K-selected populations tend to reproduce quickly.
Answer the following statement true (T) or false (F)
Various techniques have been developed to isolate strains of bacteria carrying a particular mutation. One of them is, bacteria containing wild-type cells and cells of a desired mutant are grown on a medium lacking the nutrient for which the desired mutants are auxotrophic but containing an antibiotic that only kills growing cells. In this environment,
A. wild-type cells die; mutant cells survive. B. wild-type cells survive; mutant cells die. C. both wild-type and mutant cells survive. D. only double mutants survive. E. both wild-type and mutant cells are killed.