Surveillance of health issues is typically accomplished by two methods: population surveys and antibiotic treatment.
Answer the following statement true (T) or false (F)
False
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Which of the following statements is false?
a. Checkpoint gene products that inhibit mitosis are called proto-oncogenes. b. Metastasis is the invasion of cancer cells into normal tissue. c. Malignant tumors differ from benign tumors in that their cells migrate. d. Cancer cells have lost the ability to stop dividing. e. The parent cell that started a cancer may have undergone a checkpoint gene mutation.
Because old species become extinct as new species evolve, suggest a situation that makes a particular species vulnerable to extinction.
a. alterations in chromosome number b. ability to compete for limited resources c. adaptive radiation d. ability to adjust to a variety of habitats e. environmental changes for species with highly specialized adaptations
Which of the following is not a reason for the importance of mRNA processing in eukaryotes?
A) longevity in the cytoplasm B) coupling of transcription and translation C) presence of a nuclear membrane D) turnover in the cytoplasm E) removal of introns
How could the formation of membranes have promoted the evolution of the first true cells?
What will be an ideal response?