Antigens<span> are foreign particles, usually proteins, which are capable of generating an immune response in the body, a property known as immunogenicity. This immune response consists of specific </span>antibodies<span> which are generated by plasma cells as a result of exposure to a specific epitope presented by the </span>antigen<span>.</span>
Most autotrophs make their "food" through photosynthesis using the energy of the sun. Heterotrophs cannot make their own food, so they must eat or absorb it. Chemosynthesis is used to produce food using the chemical energy stored in inorganic molecules
Answer:
- <u>cell;</u> <u>prophase</u>. <u>prometaphase</u>
- <u>metaphase. anaphase,</u> t<u>elophase.</u>
Explanation:
Mitosis is the division of the <u>cell</u><u> </u>and begins with a stage called <u>prophase</u>. As the nuclear envelope finishes dissolving, the cells enter <u>prometaphase,</u> where microtubules from the spindle attach to the duplicated X-shaped chromosomes.
When all chromosomes are fully attached to the spindle, they align at the midplate between poles. This marks the middle of mitosis, which is <u>metaphase</u>. As sister chromatids separate, cells enter <u>anaphase</u> and they finish separating, and a nucleus reforms around each set of new chromosomes in telophase. During this phase, cytokinesis also becomes visible as the cells themselves begin to divide.
Predators are an important part of a healthy ecosystem. Predators cull vulnerable prey, such as the old, injured, sick, or very young, leaving more food for the survival and prosperity of healthy prey animals. Also, by controlling the size of prey populations, predators help slow down the spread of disease.
D. fossils will help you discover how old the rock is, fossils would not be included in the question if the answer does not relate to them