Why do scientists use model organisms?
What will be an ideal response?
ANSWER: Model organisms have rapid development, short life cycles, and small adult sizes, making
them ideal to work with in the laboratory setting. Many forms of life share similar molecules,
structures, and processes; thus, research on these small and often simple organisms provides
insights into biological processes that operate in larger and more complex ones
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The majority of DNA in a human can be described as
A. composed of short interspersed elements. B. non-coding. C. simple sequence repeats. D. segmental duplications. E. structural.
Which product(s) of the Calvin cycle is(are) exported from the chloroplast for use by the plant cell?
A. triose phosphates B. sucrose and glucose C. RuBP D. NADPH
What cellular process is involved in the release of histamine or cytokine?
A. receptor-mediated endocytosis B. pinocytosis C. exocytosis D. transcytosis
How many distinct aminoacyl-tRNA synthetases does each cell make?
A. ~1 B. ~20 C. ~60 D. ~120 E. ~180