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At the beginning of the spring, Dr. Betty Burner notices that there is an equal distribution of long and short-stemmed dandelions in her backyard. By the end of the summer she notices that the majority of the dandelions have short stems. This observation is an example of what biological principle? Develop a hypothesis as to why there was an increase in the proportion of the short-stemmed dandelions within the population.
An optional technique of performing the catalase test exist where hydrogen peroxide is dropped directly into a colony growing on an agar plate.
Histone proteins from many different eukaryotes are highly similar in their amino acid sequence, making them among the most highly conserved eukaryotic proteins. What functional properties of histone proteins might limit their diversity?
Suppose that you have uncoupled mitochondria (no chemiosmotic gradient to restrict respiration). Which of the following substrates should produce the fastest rate of respiration?
A circular coil enclosing an area of 160 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 7.0 ?, and the ends of the wire are connected to form a closed circuit.
Which bones articulate with the humerus?
Hypothesize a undiscovered hormone name that would explain some oddity of human or animal behavior?
He speculated that geologic columns would have the most height of 72,000 feet. Using his approach and numbers, compute the approximate age of the earth he came to.
In modern blimps, the gas of choice used to inflate them is helium rather than hydrogen. Hydrogen would be lighter, but helium is safer. Compare and contrast the atomic structure of hydrogen and helium.
A strange species of worm has a simple nervous system that regulates turning to the right or the left. Each side of the worm has one neuron which stimulates turning.
Lysosomes are single membrane-enclosed, 0.2-0.5 m diameter spherical vesicles inside the cytosol of eukaryotic cells. Estimate the concentration of H+ inside lysosomes.
What is primary crossing? What is the purpose of primary crossing in sorting mutants with similar phenotypes into complementation groups.
The most efficient method of generating ATP for most organisms is aerobic respiration.What molecule is needed for aerobic respiration.
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