At rest, a nerve cell has a high concentration of ____ inside and a high concentration of ____ outside
a. acetylcholine; chlorine
b. sodium; potassium
c. potassium; sodium
d. calcium; phosphorus
e. phosphorus; calcium
c
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A prize is now being offered for anyone who can sequence a complete human genome for less than:
A. $50. B. $100. C. $1000. D. $10,000. E. $100,000.
Anaphase
A) results in an unequal distribution of chromosomes to the resulting cells. B) is initiated when the newly divided centromeres begin to move apart. C) is the same in mitosis and meiosis I and II. D) involves the lining up of the chromosomes across the equatorial plate.
You discover a plant that has unusual fruit around the seed and leaves with parallel veins. In which of the two major groups of flowering plants does it belong, and why?
A) Neither monocot nor dicot, because it has fruits B) Dicots, because it has fruit around the seed C) Monocots, because it has parallel veins D) Either monocot or dicot, depending on the presence or absence of flowers
What is the relationship between mutations and cancer?
A) Any point mutation will cause a cell to start proliferating without control, resulting in cancer. B) Cells lose the ability to mutate their DNA and evolve once they become cancerous. C) Only a mutation can stop a cell once it becomes cancerous. D) Some mutations cause cells to lose control over cell division, resulting in cancer. E) Cells do not require mutations to become cancerous but acquire them as they divide.