Which of the following is one of Chargaff’s
rules about DNA structure?
a. phosphate groups are connected to sugars
by covalent bonds
b. base pairs connect to each other by
hydrogen bonds
c. the amounts of adenine and thymine are the
same as are the amounts of cytosine and
guanine
d. the DNA molecule forms into a double
helix
e. the strands in a DNA molecule run in
opposite directions
C
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An organism that carries out cellular respiration in its mitochondria:
A. may be a cell from a terrestrial plant. B. may be a prokaryotic cell from the domain Arcahea. C. is a bacterium. D. may be any kind of cell.
Flagella occur in both prokaryotes and eukaryotes. Which of the following statements DOES NOT describe how the flagella of prokaryotes and eukaryotes differ?
A. Eukaryotic flagella have microtubules in a cytoskeleton whereas prokaryotic ones do not. B. Eukaryotic flagella have the motor protein dynein whereas the prokaryotic one does not. C. The eukaryotic flagellum is covered by the plasma membrane whereas that of the prokaryotes is not. D. Prokaryotic flagella have a basal apparatus and hook that rotates the filament whereas eukaryotic flagella do not. E. The filament of eukaryotes is multilayered whereas that of prokaryotes is a single strand.
Botox used in cosmetic medicine blocks ____
a. ATP production b. ACh release c. the ability of motor neurons to have electrical impulses d. oxygen transport e. ACh receptors
Describe the molecular and transmission characteristics of Leber's hereditary optic neuropathy (LHON)
A) cytoplasmic inheritance, which includes mtDNA lesions B) maternal inheritance, which includes mtDNA lesions C) cytoplasmic inheritance, which includes cpDNA lesions D) X-linked recessive E) dominant maternal inheritance