2nd time i ask this question no answer will mark as brainliest answer both questions")

The meselson-stahl experiment demonstrated that dna replication is semiconservative. in the figure, semiconservative replication is illustrated by

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Question 3(multiple choice worth 4 points) (02.04 lc) which best describes the function of chloroplast? allows certa molecules to enter and exit the cell makes food during photosynthesis detoxifies waste products o packages proteins into vesicles