Which of the following elements is considered an essential micronutrient for plants?
a. gold
b. carbon
c. uranium
d. nitrogen
e. copper
E
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A person has the genotype XXY. What syndrome does this person have and what sex are they?
A. Klinefelter....male B. Klinefelter ....female C. Turner...male D. Turner....female E. no syndrome...male
GGG and GGC are codons for the amino acid, glycine. A mutation caused the insertion of a cytosine in place of the guanine during DNA replication. Over many generations the DNA changes so that the frequency of GGC is similar to that of GGG. What is this phenomenon called?
A. directional selection
B. bottleneck effect
C. stabilizing selection
D. adaptive variation
E. neutral variation
You are studying a newly-established nature preserve, and find that the biomass of herbivores within it is 10 kJ/m2. Based on the graph below, what would you predict about the primary productivity of the area relative to other ecosystems?
A. It would be higher than tundra, but lower than savannah. B. It would be higher than savanna, but lower then tropical forest. C. It would be higher than savannah, but lower than temperate forest. D. It would be higher than desert, but lower than tundra.
In which of these mitosis phases is the replication of DNA accomplished?
This diagram shows the steps in mitosis, with labels to reference in the questions below.
A. A, which is prophase.
B. E, which is cytokinesis.
C. None of these answer choices is correct.
D. A, which is mitosis.
E. C, which is telophase.