What property of the phospholipid bilayer allows proteins to move laterally in the membrane?
Ans: Transmission electron microscope
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In order for a cell to maintain a high degree of order, it must:a
constantly release energy. b. constantly produce energy. c. constantly destroy energy. d. constantly use energy. e. constantly increase energy
Define and clearly differentiate between the following terms: cell determination and cell
differentiation. What will be an ideal response?
The mutation that causes SCD causes what kind of change in the structure of hemoglobin?
A) decreases heme-binding ability B) fewer chains of amino acids (trimeric rather than tetrameric structure) C) a single amino acid substitution that alters the structure of the tetramer D) addition of a single amino acid that causes a longer protein subunit E) loss of a single amino acid that causes a frameshift and premature stop codon
Which of the following statements about PCR is false?
(a) PCR uses a DNA polymerase from a thermophilic bacterium. (b) PCR is particularly powerful because after each cycle of replication, there is a linear increase in the amount of DNA available. (c) For PCR, every round of replication is preceded by the denaturation of the double-stranded DNA molecules. (d) The PCR will generate a pool of double-stranded DNA molecules, most of which will have DNA from primers at the 5? ends.