C. A wall of stones and mortar
This would act as a model describing the cell membrane.
Explanation;
A cell membrane is made up of a phospholipid bilayer with embedded proteins.
A cell membrane hold the different components of the cell together and to protect it from the environment outside the cell. It acts as a boundary between the inside environment and the outside environment of a cell.
It regulates the materials that enters and exits the cell; through selective movement of substances in and out of the cell.
Answer:
James Watson and Francis Crick solved the structure of DNA. Rosalind Franklin and Maurice Wilkins, also contributed to this discovery.
Explanation:
You could say DNA is found in both viruses and in living single-celled organisms because DNA is necessary to replicate itself.
Answer:
b. False
Explanation:
Channel proteins use passive transport, that is, they do not require energy such as ATP for transporting molecules.
Darwin's opinion that living forms must be descended from extinct forms was most closely related to his consideration of the fossil record.
