You might infer from packages of commercial fertilizer that which nutrients are most limiting to plant growth?
a. carbon, nitrogen and phosphorous
b. nitrogen, phosphorous and potassium
c. hydrogen, phosphorus and magnesium
d. iron, Magnesium and nitrogen
e. phosphorus, potassium, and calcium
ANSWER: b
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You have started your experiment with two populations that are genetically identical. What process will introduce genetic variation into these populations? Will identical genetic changes occur in each flask?
What will be an ideal response?
Error bars on a graph indicate
a. places where the data is likely wrong. b. places where the researcher is unsure of her results. c. variation in results that cannot be accounted for. d. variation in a set of data around the average. e. poor experimental technique on the part of the researcher.
DNA replication occurs
a. between the gap phases of interphase. b. immediately after cytoplasmic division. c. during prophase of mitosis. d. between mitosis and G1. e. after the S phase of interphase
How do defibrillators work?
a. they pump adrenalin into heart tissue. b. they deliver an electric shock to the heart’s pacemaker. c. they automate CPR. d. they massage the heart using remote sensors. e. they do a combination of more than one of these