6 Mylie tested the pH of ammonia and lemon juice. What was most likely her result?
a
A Both ammonia and lemon juice had a pH value less than 7.
B Both ammonia and lemon juice had a pH value more than 7.
a
C Ammonia had a pH value less than 7, and lemon juice had a value
greater than 7.
D Ammonia had a pH value greater than 7, and lemon juice had a value
less than 7.
a

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them