Answer:
A body attacks a transplanted organ because it does not recognize it as being made of self cells. It knows this because the new organ has antigens, a form of proteins that coat the organ. When a body's immune system recognizes these antigens and they are not similar enough to the body's own antigen's, it attacks to try and keep itself safe and healthy.
Explanation:
Answer:
-S-phase
-Late telophase
Explanation:
The cell cycle is divided into two main phases: interphase and mitotic phase.
Interphase is phase characterized by the the cell growth and DNA copy (replication). During this phase, the cell prepares for division (mitotic phase).
Mitotic phase is subdivided into four phases: prophase, metaphase, anaphase and telophase. At the end of prophase, nuclear envelope breaks down and condensed chromosome (DNA structures) are released.
During the late telophase, nuclear envelope is reformed.
Answer:
Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, unlike prokaryotes, which have no membrane-bound organelles.
Explanation:
Answer:
46
Explanation:
Mitosis is a type of nuclear division that forms two new nuclei from a single parent nucleus. The newly formed nuclei have the same number of chromosomes as that of the parent nucleus. Mitosis is followed by cytokinesis which is the division of cytoplasm. By the end of one round of mitosis followed by cytokinesis, one parent cell give rise to two genetically identical daughter cells.
Therefore, if a cell with 46 chromosomes goes through one round of mitosis and cytokinesis, the nucleus of each of the two daughter cells would have 46 chromosomes.
These organelles are Chloroplasts.
Explanation:
- Chloroplast is a plastid present in plant cells.
- These contain stacks of thylakoid forming Grana.
- Each thylakoid contain green pigment called chlorophyll that traps sunlight to carry out photosynthesis.
- Chloroplasts is a double membrane bound organelle having its own DNA.
- Chloroplasts are considered as one of the organelles that originated as a result of endosymbiosis of photosynthetic bacteria.
