The Earth's carrying capacity is:
a. 1 billion.
b. 1 million.
c. 4 billion.
d. 16 billion.
e. unknown.
e
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Why do so many eukaryotic pathogens cause highly refractory and long-term chronic infections that are difficult to treat in contrast with prokaryotic pathogens?
What will be an ideal response?
Flooding, landslides, soil nutrient loss, and global climate change all result from:
a. the introduction of exotic plants b. desertification c. deforestation d. ozone depletion e. biological magnification
According to the most widely accepted hypothesis, the origin of the nuclear genome involved:
A. an endosymbiotic relationship between an archaeon and a bacterium. B. a symbiotic relationship between an archaeon and a bacterium. C. an endosymbiotic relationship between two archaeons. D. an endosymbiotic relationship between two bacterium. E. a symbiotic relationship between two archaeons.
How does cellular respiration differ in prokaryotes and eukaryotes?
a. Eukaryotes use substrate-level phosphorylation; prokaryotes use oxidative phosphorylation. b. Eukaryotes use mitochondria; prokaryotes use their plasma membrane. c. Eukaryotes use NAD+/NADH; prokaryotes use FAD+/FADH2. d. Eukaryotes do not all use oxygen; prokaryotes only use oxygen. e. Eukaryotes use only glucose; prokaryotes use only galactose.