What percentage of body weight is fluid in healthy adult males and females?
1.30% for both males and females
2.40% for males, 20% for females
3.60% for males, 50% for females
4.65% for males, 30% for females
3
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A researcher found a beautiful plant while traveling in Alaska and collected its seeds. When she came back to Florida, she soaked some seeds in pure water and some in water with a hormone
When she put the seeds in soil to grow, only the seeds that had been soaked with the hormone germinated. The hormone most likely was _____. A) gibberellin B) abscisic acid (ABA) C) auxin D) ethylene
Mycorrhizae, present for most plant species, generally do not help roots with the uptake of ____
a. water b. nitrogen c. phosphate d. carbon e. sugars
The root-to-shoot water in a plant is called the transpiration stream
Indicate whether the statement is true or false.
Select the best choice below to match statements 135–137
a. surgical correction b. chemotherapy c. genetic screening d. genetic counseling e. gene therapy M 135. Identification of persons with sickle-cell anemia can be done by this method. M 136. Once the risks have been determined, this method is an effective way of dealing with a genetic disorder prior to its occurrence in a child. M 137. The substitution of a normal allele for a defective allele via the methods of genetic engineering would be an example of this.