Hydroponic culture is the process of ____
a. growing plants in pure water mixed with carefully measured amounts of specific minerals
b. irrigation of dry areas to improve mineral absorption by plants
c. growing plants in ponds and lakes to improve their access to water, allowing the plants to place more
resources into the shoot system
d. irrigation of dry areas to prevent crop plants from wilting
e. growing plants with specific hydrocarbons added to the soil to test the effect on plant growth
ANSWER: a
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Packaged DNA is referred to as
a. chromosomes. b. histones. c. chromatin. d. protein. e. nucleosomes.
Which characteristic of capillaries aids in the process of diffusion?
a. slow blood flow b. one cell thick walls c. rapid blood flow d. both slow blood flow and one cell thick walls e. both one cell thick walls and rapid blood flow
In terms of overall methylation, what is the most accurate way to describe the genomes of cancer cells?
A) Cancer cells have an overall hypomethylated genome compared to healthy cells. B) Cancer cells have equivalent methylated genomes compared to healthy cells. C) A few types of cancers are have hypomethylated genomes, but it is not common in most types of cancers. D) Cancer cells have an overall hypermethylated genome compared to healthy cells. E) A few types of cancers are have hypermethylated genomes, but it is not common in most types of cancers.
The dried residues of fine droplets from mucus or saliva that harbor and transmit pathogen are
A. fomites. B. mechanical vectors. C. droplet nuclei. D. biological vectors. E. aerosols.