Immune tolerance is the lack of capacity to increase the
reaction to antigens. The tolerance can either be natural or “self” tolerance. On
the other hand, licensing is a kind of protein that lets replication for cells.
They usually happen with eukaryotic cells and they begin with the replication
of DNA.
Answer: Diploid means you have two of each type of chromosome.
Explanation:
Diploid is the term that refers to the number of each type of chromosome that an organism has. And diploid specifically means every cell in that organism has two copies of each type of chromosome.
Answer:
microorganism/ biological cell
Explanation:
Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats.
A) Polaris is much farther from Earth than the Sun -is the reason why Polaris although about 46 times larger than the Sun, the Sun appears brighter than Polaris from Earth.
Explanation:
Astronomers define the brightness of a star based on its apparent magnitude and absolute magnitude. The apparent magnitude tells about how bright does a star looks from the Earth. The absolute magnitude of star is its brightness or magnitude at a standard distance of 10 parsecs or 32.6 light-years.
Accordingly,
The apparent magnitude of Sun is 26.74; while that of Polaris is 2.02
The absolute magnitude of Sun is 4.63; while that of Polaris is 3.6
The Sun is at a distance of 0.000015649 light years from the Earth; while the Polaris is 434 light years from the Earth. A star appears brighter from the Earth due to the closeness of the star to the Earth.
All these factors make the Sun appear brighter than the Polaris
.