Read the article. Use your understanding to answer the questions that follow. ""Stem Cell Basics""How are stem cells being used in the labour? Stem cells are to screen drugs. Scientists are using stem cells to create a model system for normal growth to determine how birth defects happen

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

well the answer is 2!