Answer:
A. They usually have cell walls
Explanation:
Because cell wall is a protective layer outside the cell membrane and it's provides support for the cell’s structure,And is the outermost layer of cells in plants, bacteria, fungi, and many algae that gives shape to the cell and protects it from infection
Answer: c. nephron
Explanation: The nephron is the functional unit of the kidney, which actively filters blood and generates urine. The nephron is made of the renal corpuscle and renal tubule. Cortical nephrons are located within the renal cortex, whilst juxtamedullary nephrons are observed inside the renal cortex near the renal medulla.
Answer:
The mass number of an atom is its total number of protons and neutrons. Atoms of different elements usually have different mass numbers , but they can be the same. For example, the mass number of argon atoms and calcium atoms can both be 40.
Explanation:
Answer:
The enzyme that is responsible for adding nucleotides to the growing DNA molecule is called DNA POLYMERASE.
The principal role of DNA polymerase is to carefully and accurately add the right nucleotides to the growing DNA molecule in order to make sure that the genome is accurately replicated and the genetic information are maintained.
