White Blood Cells (WBC), produced by the stem cells found in the bone marrow, manufacture antibodies used to counter the effects of the antigens.
The White Blood Cells are known to provide immunity to the body against foreign bodies like bacteria, virus, proteins, etc. The lymphocyte cells, namely, the B-cells and T-cells are the two key cells that make antibodies for various antigens and kill or lyse the foreign body by recognising the antibiotic marker attach to them.
B because organs help digest food, breathe, and help get rid of bacteria.
The cell theory states that absolutely all living beings are composed of cells, for which all cells must contain the necessary structures to metabolize (nourish) and self-perpetuate (reproduce) as the cell nucleus, where the DNA is store.
Cell theory focused the efforts of biology on the cell as the minimal structure to sustain life.
- The vital functions of organisms take place within cells through biochemical processes, and are controlled by substances secreted by cells.
- Cells have diverse structures and delimited sectors that allow them to fulfill vital functions in the entire organism: birth, nutrition, metabolism, reproduction, growth, death.
- These processes also depend on important cellular structures, such as the cell nucleus, where the DNA of the entire species is contained.
Therefore, we can conclude that the cell theory allowed us to understand the dynamics and processes of the cell.
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Answer:
Canyons
Explanation:
The erosion over time may have caused this
Answer:a. The normal gene function is required for the viability of the zebrafish.
Explanation:
It is mentioned that if the gene responsible for forming stripes on its body is inactivated by mutation then fish without stripes will produced.
This will lead to the absence of phenotypic character that is strips on the fish. The other genes which are responsible for the survival of the fish will function normally thus this will be untrue that normal functioning of the gene required for expressing horizontal strips is also necessary for the survival and viability of the zebrafish.
