Answer the following statements true (T) or false (F)
1. Nitrogen is one of the most abundantly applied fertilizers worldwide.
2. Aluminum is not an essential mineral for plants and therefore may cause toxicity.
3. When a mycorrhizal fungus associates with the roots of a plant, the fungus usually causes harm to the plant.
4. Inexpensive sources of phosphorus fertilizers are nearly exhausted.
1. TRUE
2. TRUE
3. FALSE
4. FALSE
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In terms of global gene regulation, which of the following molecules is most similar to c-di-GMP and cAMP?
A. EnvZ B. ppGpp C. rRNA D. ATP
. In this human embryo (shown in the photo), one can see the somites as segments along the length of the body. Into which structures will these somites develop?
a. spine and skull
b. internal organs and internal epidermal tissues
c. ribs, lungs, and spine muscle
d. the circulatory system
Which aspect of population genetics can lead to changes in allele frequencies in a new mixed population following migration?
A) natural selection B) mutation C) gene flow D) founder effect E) bottleneck effect
Which of the following most closely matches the correct order of the main events of aerobic cellular respiration?
A) Glycolysis, Krebs cycle, ETC, major ATP production B) Major ATP production, pyruvate enters the mitochondrion, Krebs cycle, ETC C) Glycolysis, major ATP production, pyruvate enters the mitochondrion, ETC, Krebs cycle D) Glycolysis, pyruvate enters the mitochondrion, Krebs cycle, major ATP production, ETC E) Krebs cycle, ETC, major ATP production, glycolysis