During osmosis, water will move from a ____concentration of water to a ___ concentration of water.
a. low; high
b. high; low
c. high; equilibrium
d. low; equilibrium
b. high; low
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The most recent techniques developed in the biological sciences allow the manipulation of DNA with the ultimate goal of intervening directly with the _______ fate of organisms.
A. genetic B. developmental C. adult D. mitotic
Phage typing is useful in identifying ________.
A. Clostridium B. Salmonella C. Treponema pallidum D. Streptococcus pyogenes E. Mycobacterium leprae
In the karyotype of a person with Down syndrome, or trisomy 21, an extra copy of chromosome 21 is apparent. This abnormality affects roughly 1 of every 700 children born and is the most common serious birth defect in the United States
People affected by Down syndrome often have mental retardation and shortened life spans. Based on this scenario and your understanding of meiosis, what is the most likely explanation for the extra chromosome in people with Down syndrome?
The basic taste sensations are different in that each sensation works through:
A) different ciliated receptor varieties, just like smell receptors. B) a different chemical reaction route in a taste cell. C) a similar chemical reaction route in a taste cell. D) different taste nerves.