Which of the following is not true about an essential nutrient?
A) It is necessary for plant growth and reproduction.
B) It is produced by symbiotic bacteria.
C) It is required for a specific structure or metabolic function.
D) It cannot be synthesized by a plant.
E) All of the above are correct.
Ans: E) All of the above are correct.
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A branch of genomics that generates three-dimensional structures from their amino acid sequences is known as _____
a. bioinformatics b. comparative genomics c. structural genomics d. pharmacogenomics e. proteomics
In the flower diagram shown above, the item labeled "8" is a(n)
a. ovule. b. stigma. c. sepal. d. anther. e. style.
Which vessel, A, B, C, or D, carries blood to the human lungs?
1.A
2.B
3.C
4.D
A lipid is a(n) ____
a. polar hydrocarbon b. polar peptide c. nonpolar peptide d. ionic polar hydrocarbon e. nonpolar hydrocarbon