__________ lengthen stems, break dormancy in seeds and buds, and stimulate flowering. Fill in the blank(s) with the appropriate word(s)
Gibberellins
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The main reason sodium and potassium ions CANNOT easily diffuse through plasma membranes is
A. these are large atoms and size prevents their diffusion through membranes. B. they have a high solubility in lipids. C. they have a low solubility in lipids. D. they have a high solubility in water. E. they have both a high solubility in water and a low solubility in lipids.
The primary difference between individual nucleated cells in a developing zygote is the ____
a. genetic code of each cell b. differential expression of housekeeping genes c. differential expression of regulated genes d. number of chromosomes present in the nucleus e. presence or absence of gene regulators
What is the name given to the opening that allows blood to flow from the right atrium directly into the
left atrium of the fetal heart? a. ductus arteriosus b. foramen ovale c. vernix caseosa d. ductus venosus e. lanugo
In eukaryotes, the AUG initiation codon is located in the ________ sequence
A) Shine—Dalgarno B) Kozak C) Khorana D) Goldberg—Hogness E) Pribnow