What are micronutrients?
a. essential elements that are difficult to obtain
b. essential elements that are able to diffuse into the cell
c. essential elements plants need in small quantities
d. essential elements that are visible via microscopy
c. essential elements plants need in small quantities
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The limit of resolution can best be defined as
A) the distance that an object must be moved to be distinguished from its background. B) the inverse of the wavelength of light; it is greatest for black light. C) the distance that two objects must be apart to be distinguished as separate objects. D) the solvent that must be available to remix a solution. E) the magnification power of a microscope.
In human populations, inbreeding results in
A) fewer heterozygotes and more homozygotes. B) more heterozygotes and fewer homozygotes. C) about equal numbers of homozygotes and heterozygotes. D) only heterozygotes.
Mitosis begins with which phase?
a. prophase b. metaphase c. anaphase d. telophase e. cytokinesis
Mendel performed a testcross with his plants and all the resulting progeny had the same colour. What information did this testcross provide?
a. The parent with the dominant trait is heterozygous. b. The parent with the dominant trait is homozygous. c. The parent with the recessive trait is heterozygous. d. The parent with the recessive trait is homozygous.