Which of the following settings constitutes an extrapolation?
A. Using past sales and price information to make a forecast for next year's sales growth.
B. Using 2014 and 2016 data on GDP to estimate GDP in the third quarter of 2015, which is missing.
C. Using past sales and price information to estimate last year's price elasticity of demand.
D. Using a randomized control trial to estimate the causal effect of the use of a cancer treatment on health outcomes.
Answer: A
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A scientist fused a mouse cell and a human cell, then treated the cell with specific antibodies
covalently linked to fluorescent dyes (antibodies to mouse proteins--green; antibodies to human proteins--red). What does the cell look like immediately after fusion?
a. The cell is half red and half green. b. The red and green fluorescent labels are uniformly distributed across the entire membrane. c. The red and green labels are distributed in intermingled patches. d. The red and green labels flash intermittently. e. The red and green labels are distributed in a swirling pattern
Iskander wants to live as long as his great-grandfather, who died at 104, strong and healthy almost to the last. What are some things that could make a difference for his pathway to good health and long life?
What will be an ideal response?
The type of cells that are particularly effective at attacking body cells infected by viruses are
A. macrophages. B. natural killer cells. C. monocytes. D. eosinophils.
Eukaryotic organisms speed up the process of DNA replication by
A. producing several sliding clamp complexes which provide more binding sites for DNA pol III. B. using multiple origins of replication on each chromosome. C. using DNA gyrase to unravel the double helix rather than DNA helicase. D. shortening the initiation phase.