If seed germination took place in 100% of plants at the 1.0 mg/mL concentration, and no germination was observed at the 0.1 mg/mL concentration, how would you modify a second experiment to determine the actual effective concentration?
What will be an ideal response?
Use a narrower range of concentrations for the experimental conditions.
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First, give the amino acid sequence for the following DNA segment: AATCGAGGTACA. If a base substitution mutation occurred in this segment of DNA, would the resultant amino acid chain be affected?
What will be an ideal response?
In freshwater sponges and other simple freshwater animals, water flows into the body by __________. Fill in the blank(s) with the appropriate word(s)
The interaction of several polypeptide chains
in a hemoglobin molecule is its ____ structure. a. primary b. secondary c. tertiary d. quaternary e. combined
Why have legumes been planted as a cover crop to improve the soil fertility of a field?
A) Legumes have nitrogen-fixing bacteria in their root nodules. B) The leaves of legumes absorb more nitrogen than other plants. C) Legumes have carbon-fixing bacteria in their root nodules. D) Legumes aid organic decomposition. E) Legumes need about 100 times less nitrogen than other plants.