What type of sugar is shown in the figure above?
a. deoxyribose
b. ribose
c. phosphate
d. nitrogenous
e. adenine
ANSWER: b
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In eukaryotes a so-called cap consisting of ________ is attached to the 5' end of the molecule during posttranscriptional modification of hnRNA to produce functional mRNA.
Fill in the blank(s) with the appropriate word(s).
Blood is prevented from back flowing in veins
because of
a. high pressure flow. b. rapid diffusion. c. one-way valves. d. suction from the lungs. e. the pulsing of the veins.
A chi-square test is used to
a. determine if experimental data adequately matches what was expected. b. analyze a Punnett square. c. determine parental genotypes producing a given offspring genotype. d. determine if a trait is dominant or recessive.
Rigor mortis sets in after the death of humans and other animals because the supply of ATP decreases to the point at which calcium can no longer be removed from the cell. At this point, the myosin molecules attach to the thin filament
The muscles stiffen, and limbs cannot be moved. Why and for how long does the muscle then remain in this continuously contracted state?