A sequence of bases located upstream from a reference point occurs:a
towards the 3? end of the amino acid sequence.
b. towards the 5? end of the mRNA sequence.
c. towards the 3? end of the mRNA sequence.
d. towards the 5? end of the transcribed DNA strand.
e. towards the carboxyl end of the amino acid sequence.
B
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The organelle with a flattened channel that begins at the nuclear envelope and passes into the cytoplasm is the ____
a. nucleus b. nuclear membrane c. Golgi body d. endoplasmic reticulum e. lysosome
Assuming that p = 0.3 for a population in Hardy-Weinberg equilibrium, what would be the expected frequency of heterozygotes for the involved allelic pair?
What will be an ideal response?
Which of the following visual association with its related cause is NOT correct?
A. color blindness - lack of red or green cones B. nearsighted - unable to see near objects in detail C. cataracts - lens becomes opaque with aging and sun exposure D. eyestrain - muscle fatigue from constant contraction of the ciliary muscle
Which of the following descriptions is consistent with the behavior of a cell that lacks a protein required for a checkpoint mechanism that operates in G2?
(a) The cell would be unable to enter M phase. (b) The cell would be unable to enter G2. (c) The cell would enter M phase under conditions when normal cells would not. (d) The cell would pass through M phase more slowly than normal cells