The evolution of the blood clotting mechanism is likely explained by ____

a. constant mutations
b. direct response to environmental factors
c. gene duplication
d. sharing of gene pools between species
e. inbreeding


ANSWER: c

Biology & Microbiology

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What is the main reason for why there has not been an increase in the production of new nuclear power plants?

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Joan and her doctor notice a suspicious lump in her breast. Joan also has a family history of breast cancer. Which of the following is not a likely next step as they work to determine the cause of the lump?

A. performing a diagnostic mammogram B. genetic testing for mutations in the BRCA1 gene C. taking a biopsy of the lump to look for the presence of cancer cells D. performing a mastectomy to remove all breast tissue in that breast

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MRI is a type of imaging technique that can detect tumor consistency

Indicate whether the statement is true or false

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A type of active transport is

A. diffusion B. membrane assisted transport C. osmosis D. facilitated transport (movement from high to low concentration requiring the assistance of a protein).

Biology & Microbiology