Plant hormones generally ____ concentrations to be effective, and usually have ____ on different plant
tissues.
a. are effective only in extremely large; the same effect
b. require only low; different effects
c. require only low; the same effect
d. are effective only in extremely large; different effects
e. require moderate; the same effect
B
You might also like to view...
The nucleus of an atom is composed of
A. protons. B. neutrons. C. electrons. D. protons and neutrons. E. protons and electrons.
Insulin can activate lipid synthesis in adipose cells and block breakdown of glycogen in the liver. How could one hormone have different effects on different organs?
_____ Adipose and liver cells may express distinct insulin receptors. _____ Adipose and liver cells may have unique signal transduction pathways activated by insulin. _____ Adipose cells do not express the insulin receptor while liver cells do. _____ Adipose and liver cells may contain different transcription factors that regulate the expression of different genes.
A cohort study looks at
A) a large group of people over time, keeping track of specific health conditions or measures. B) large groups of DZ and MZ twins. C) heritabilities of behavioral characteristics. D) patterns of copy number variants in the human genome.
Conserved arrangements of segments of DNA in related genomes are referred to as
A. analogous DNA. B. homology. C. a comparative genome. D. synteny. E. a contig.