Sudan IV, a dye that binds to nonpolar molecules, is used to detect the presence of macromolecules in food. Sudan IV would test positive in the presence of what macromolecule?
A. starch
B. chitin
C. DNA
D. fats
E. hemoglobin
Answer: D
Biology & Microbiology
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The relationship above is
a. a parasitic association. b. predation. c. resource partitioning. d. a mutualistic association essential to the fish but not the anemone. e. none of these.
Biology & Microbiology
The neural plate forms from which type of tissue?
a. ectoderm b. endoderm c. mesoderm d. chorion e. amnion
Biology & Microbiology
Homologous chromosomes separate during
A. metaphase. B. anaphase. C. anaphase I. D. anaphase II.
Biology & Microbiology
In humans, transmission of nerve impulses across a synaptic cleft is carried out by ________.
a. neurotransmitter molecules b. potassium ions c. the nodes of Ranvier d. sodium ions
Biology & Microbiology