Answer:
The chemical and electrical signals are used by brain for communication,sensation and thought. Brain uses electrical signals from communication.
A dominant allele can produce a dominant phenotype in individuals with one copy of the allele from one or both parents, but a for recessive allele to produce a recessive phenotype, the individual needs to have two copies, one from each parent.
Answer:
C. Atomic Number
Explanation:
Atomic number, also known as proton number, never changes. Therefore it allows us to identify each atom.
Answer: C. Chromosomes
When an egg and sperm cell
unite, fertilization follows. The chromosomes carry the genes that will be
transferred to the offspring. They have threadlike bodies that made up of DNA
and protein that carries hereditary information, which is used to help a cell
grow and reproduce.
Furthermore, humans have 46
chromosomes and 23 in each sex cell and they are found in the nucleus of a
cell.
Answer:
Prokaryotic cell-- no organelles, no membrane.
Eukaryotic cell -- Have organelles and membrane.
Explanation:
For the model of prokaryotic cell, we construct the model by removing organelles from the cell whereas in the eukaryotic cell, we add the organelles because in eukaryotic organisms, organelles are present in the cell that performs specific function. In the model of prokaryotic cell, we have to remove membrane around the nucleus whereas membrane president around the nucleus. In the prokaryotic cell, nucleus is not visible while on the other hand, in eukaryotic cell, the nucleus is visible and can be differentiate from other organelles.
