Applied science, or "technology," aims to use science to solve real-world problems.
a. true
b. false
Ans: a. true
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Certain plants have been genetically modified to secrete citrate, which helps
A. make the phosphate in soils more soluble. B. plants make necessary micronutrients. C. reveal mineral deficiencies in a plant. D. make hydroponic growth possible. E. plants add metals to the soil in which they are growing.
The large vessels of the circulatory system that carry blood away from the heart are
A. veins. B. capillaries. C. arteries. D. lymph vessels. E. sieve tubes. Arteries leave the heart
One of the questions early geneticists had to answer was how only four nucleotides can specify placement of 20 amino acids in proteins. Today we know that _________, a sequence of three adjacent nucleotides, determine the insertion of a specific amino acid in a polypeptide chain
a) codon b) karyotype c) reverse transcritption d) glycerol
Figure 22.18
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Refer to the above figure for questions.
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Which numbered item in the above figure represents a female gametophyte?
A. 1 B. 2 C. 3 D. 4 E. 5