Who might be interested in using cytokinins?
A) grocers, to spray on fruit to enhance ripening in the store
B) consumers, to spray on fruit before eating to enhance taste
C) florists, to dip stems in to keep leaves green longer
D) farmers, to spray on fruit after picking to stall ripening
B
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Answer the following statements true (T) or false (F)
1. If lithium has an atomic number of 3 then it will have 1 valence electron. 2. The electronegativity of an atom is a measure of its ability to attract electrons to its outer shell from another atom. 3. Table salt forms from sodium and chloride via hydrogen bonding. 4. Molecules are generally rigid structures and rarely change shape.
Identify the correct steps for cloning a gene of interest, then arrange them in the correct order
1. Transform the bacteria. 2. Incubate the DNA fragments and cut cloning vector with DNA ligase. 3. Use restriction enzymes to cut the gene of interest and the cloning vector. 4. Spread bacteria on medium containing lactose and ampicillin. 5. Spread bacteria on medium containing X-gal and ampicillin.
a. 4, 3, 1, 5 b. 3, 2, 5, 1 c. 3, 2, 1, 5 d. 2, 3, 1, 5 e. 3, 2, 1, 4
The female hormone that participates in milk production is _____ and the hormone that facilitates delivery is _____
a. prolactin; oxytocin b. prolactin; estrogen c. prolactin; progesterone d. oxytocin; estrogen e. oxytocin; progesterone
___________________ gives rise to new species and higher taxonomic groups widely divergent characteristics
A. Macroevolution B. Microevolution C. Adaption D. Population genetics