An mRNA macromolecule transcribes genetic code from a DNA macromolecule in a cell’s nucleus and carries the code into the cytoplasm to synthesize a protein. Which of the following statements is true about the nucleotides in the mRNA macromolecule and the DNA macromolecule? The number of uracil bases in the mRNA is the same as the number of cytosine bases on the strand of DNA that it transcribed. The number of uracil bases in the mRNA is the same as the number of thymine bases on the strand of DNA that it transcribed. The number of uracil bases in the mRNA is the same as the number of adenine bases on the strand of DNA that it transcribed. The number of uracil bases in the mRNA is the same as the number of guanine bases on the strand of DNA that it transcribed.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

i think it is d. objects resist changes in their state of motion.

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.