Water exhibits cohesion because of ________ bonding between the molecules
a. ionic
b. peptide
c. covalent
d. hydrogen
d
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Which type of cell could not be used for karyotyping?
A) Red blood cell B) White blood cell C) Fibroblast D) Skin cell
The cell wall component algin is
a. found in the brown algae. b. used in the production of ice cream. c. used as a medium on which microorganisms are grown. d. both a and b.
The most sensitive portion of the retina of the eye is known as the
A. cones. B. fovea centralis. C. optic nerve. D. rhodopsin.
Which of the following statements correctly describes the alternation of generations in a plant life cycle?
A) Diploid sporophytes that produce spores by meiosis alternate with haploid gametophytes that produce gametes by mitosis. B) Diploid sporophytes that produce gametes by meiosis alternate with haploid sporophytes that produce gametes by mitosis. C) Diploid gametophytes that produce spores by mitosis alternate with haploid sporophytes that produce gametes by meiosis. D) Diploid gametophytes that produce gametes by meiosis alternate with haploid sporophytes that produce spores by mitosis.