True, a vast, flat, treeless Arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen.
The cell wall is the outside layer of the cell whereas the cell membrane is surrounds the cytoplasm of the cell.
Explanation:
eukaryotic glycocalyx is present in prokaryotic cells, eukaryotic cells can also have glycocalyces especially single celled eukaryotic organisms.
Answer;
a segment of chromosomal DNA
Explanation;
A gene is a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their DNA sequence changes.
It is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins.
Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
Answer:
d
Explanation:
organisms are made up of cells
