AluI is an example of which type of transposable element commonly found in the genome of humans?
A) LINE elements
B) SINE elements
C) P elements
D) Copia elements
E) Ty elements
B
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The signal recognition particle and its receptor on the surface of the endoplasmic reticulum ensure that proteins destined for incorporation into cellular membranes or
for export from the cell are translated into the endoplasmic reticulum so they may be processed through the endomembrane system. If a mutation rendered the signal recognition particle nonfunctional, what would likely be the most obvious effect on the cell? What if the mutation was on the signal recognition particle receptor? What will be an ideal response?
Which of the following explains why the owl has its
head almost upside down? a. Photoreceptors are concentrated near the bottom of the eye. b. Photoreceptors are concentrated near the top of the eye. c. Loud music from a passing car caused damage to the sense of balance. d. It is trying to remove water from its ear after a hard rain. e. None of these are an accurate explanation.
Plants with flowers belong to the _______.
a) gymnosperms b) angiosperms c) seedless vascular plants d) nonvascular plants
Regarding the Gram stain technique, which of the following is the primary stain?
a. Crystal violet b. Safranin c. Iodine d. Carbolfuchsin