Answer:
The correct answers are option a. The greater the undifferentiated cell count, the more aggressive the cancer and b. Malignant tumors have the potential to kill the host.
Explanation:
Anaplasia is a medical term used to describe a condition of cells with poor cellular differentiation. It is known that the great the anaplasia, the more aggresive is the cancer. The tumors that have this characteristic are known as anaplastic carcinoma. This malignant tumors have the potential to kill the host when they metastasize to other organs.
Answer:
The sun provides the energy for plants which starts the whole food chain.
Explanation:
The human body has to remain a certain temperature. The sun provides that heat. I have to drink. The sun evaporates water so it can be redistributed in the form of rain. Your life is set by the movement of the sun.
Th memory cells differ from the effector cells in that the memory cells live longer. Two types of cells are produced by the clonal selection, these are the effector cells and the memory cells. Effector cells are relatively short lived activated cells that defend the body in an immune response. Effector B cells are called plasma cells and secrete antibodies, and activated T cells include cytotoxic T cells and helper T cells, which carry out cell-mediated responses. The production of effector cells in response first time exposure to an antigen is called the primary immune response. The memory produced at this time and only become active in case of a re-exposure to the same antigen that stimulated their formation.
Answer:
B. 6
Explanation:
The atomic number of an atom is the number of protons in the nucleus of that atom. So, for example, if an atom has 15 protons in its nucleus, its atomic number is 15.
Protons are positively charged. Since this atom's nucleus contains 6 particles that are positively charged, we can infer that those particles are protons, and that would mean that the atom has 6 protons. Like I said earlier, the number of protons in an atom is the atomic number, so this atom has an atomic number of 6.
Hopefully that's helpful! :)
3. The answer is false, because protons are positive and electrons are negative. If there are more protons than electrons, then the atom would be positively charged.
The answer is false.
4. The answer is true, because if the number of protons and electrons are the same, then the charges would cancel out, leaving the atom negative.
The answer is true.
I hope this helps. :)