What eye component is lacking in color-blind individuals?
a. cones
b. ganglia
c. bipolar cells
d. pupils
e. rods
a
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What metabolic advantage do cells have in storing the elemental sulfur byproduct from sulfide oxidation?
A) The cells avoid producing transport energy waste to secrete the sulfur. B) The byproduct serves as an electron reserve for subsequent oxidation. C) Sulfur decreases the intracellular acidification for non-acid-tolerant sulfide oxidizers. D) The byproduct can be used for other biosynthetic pathways that use sulfur, such as Rieske Fe-S proteins.
In humans, a deletion from chromosome 5 typically leads to severe mental retardation and a malformed larynx; this
disorder is known as ____.
a. Turner syndrome b. Down syndrome c. cri-du-chat d. Triple-X syndrome e. Klinefelter syndrome
Which part of a neuron allows it to receive and send electrochemical signals?
a. cytoplasmic extension b. nucleus c. neuroglial extension d. plasma membrane e. interneuron
The monomers of DNA and RNA are
A) monosaccharides. B) nucleotides. C) fatty acids. D) nucleic acids.