The purpose of mitosis is to enable existing cells to
a) grow
b) generate new, genetically diverse cells
c) die on purpose
d) generate new, genetically identical cells
e) generate gametes
Answer: d) generate new, genetically identical cells
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Explain what an enzyme must accomplish to catalyze a specific reaction
What will be an ideal response?
Acetylcholine binds this membrane protein, which subsequently opens to allow sodium to enter the cell. Acetylcholine exerts its effect on what type of transport protein?
A. ligand-gated channel B. voltage-gated channel C. mechanosensitive-gated channels D. regulatory protein-gated channels E. stretch-sensitive gated channels
A balloon permeable to water but not to glucose contains a 10% glucose solution. A beaker contains a 5% glucose solution. Which of the following is TRUE?
A) The solution in the beaker is hypertonic relative to the solution in the balloon. B) The solution in the balloon is isotonic; the solution in the beaker is hypertonic. C) The solution in the balloon is hypotonic relative to the solution in the beaker. D) The solution in the balloon is hypertonic relative to the solution in the beaker.
Which of the following is the BEST definition of a homologous chromosome?
a) a chromosome that has undergone crossing over b) one of two identical chromosomes held together by a centromere c) the central area that joins two chromatids d) the type of chromosome found in prokaryotes e) one of two chromosomes of the same length and type inherited from a father or mother