The evolution of eukaryotic cells began approximately ________ years ago
A) 1 million
B) 10 million
C) 1.7 billion
D) 3.8 billion
E) 4.6 billion
C
You might also like to view...
Because of their environments and physiology, there is great interest in using members of the sulfate-reducing bacteria (SRB) Shewanella and Geobacter in bioremediation or to generate electricity in microbial fuel cells.
Answer the following statement true (T) or false (F)
In response to environmental conditions, the average beak size in a population of birds may change between successive generations. This process of change is referred to as ________
A) macroevolution B) sequestration C) speciation D) coalescence E) microevolution
If photosynthesis produces cellular energy (ATP) from sunlight, why do plant cells also need to perform cellular respiration, a process that produces ATP from sugar?
a. Plant cells cannot make cellular energy at night; therefore, photosynthesis actually stores ATP energy as sugar, which can be then converted back to ATP at night by cellular respiration. b. Plant cells cannot make enough ATP from sunlight in photosynthesis; they need to perform cellular respiration too in order to make up the difference. c. Plant cells need cellular respiration to convert the sugars they absorb through their roots into ATP. d. Plant cells can't produce enough sugar from photosynthesis; cellular respiration is needed to produce the remaining sugar. e. Plant cells need cellular respiration to degrade the toxic products made in photosynthesis
Numerical identification methods rely on a series of which kind of test to identify microorganisms?
a. ELISA b. DNA base composition c. DNA fingerprinting d. biochemical testing