Which of the following statements is TRUE? A. A piece of DNA is often very long, containing many genes, while a piece of RNA is
often very short, containing only one gene
B. DNA never leaves the nucleus of a cell, but RNA can be found inside or outside the
nucleus
C. DNA contains a nitrogenous base called thymine, but RNA contains no thymine
D. All of the above are true

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion