To prevent cells from either shrinking or swelling you should keep them in an isotonic solution. Isotonic solution is a solution with equal amount of solute and solvent. Therefore, when cells are placed in such a solution they will not lose or gain water, as opposed to hypertonic (more solute than solvent) and hypotonic (more solvent than solute) solutions.
B. is the correct answer because not all genes are actively coding,RNA is not code for protein synthesis, also DNA does not contain a number of segments that code for specific proteins.
Answer:
A paleontologist is a scientist who studies the history of life on Earth through the fossil record. One example is dinosaur fossils. Paleontologists will examine fossilized droppings in order to see what the dinosaurs ate! Hope this helps! A scientist who studies plants is called a Botanist. A scientist who studies living things is a biologist, and a scientist who studies the ocean is called a oceanographer.
C is the answer. Happy learning!