It is A, the cell is divided into a parent cell and daughter cell (mitosis)
Erythropoiesis is the formation of the red blood cells a process which takes place in the bone marrow. All blood cells are formed in the bone marrow, a soft, highly cellular tissue that fills the internal cavities of the long bones. It takes place in 8 stages where the first seven steps takes place within the bone marrow and after the 7th step the red blood cell is released into the blood stream as reticulocyte which then matures to erythrocyte after 1-2 days.
Answer:
amount of copper
Explanation:
<em>The independent variable would be the amount of copper fed into the experimental rats.</em>
An independent variable during an experiment is a variable whose value is not dependent on any other variable being measured in the experiment.
The value of an independent variable is not changed by any other variable in an experiment. In actual fact, the effect of the independent variable is being tested on other variables (dependent variables) in the experiment.
<u>Hence, in an experimental study of the effect of copper deficiency on coat color in rats, the amount of copper fed into the system of the rats will be varied and the effects of this variation on the coat color of the rats would be observed by measuring relevant variables. Therefore, the amount of copper is the independent variable.</u>
For the first question, the age of each strip of rock is needed to determine the rate of seafloor spreading. The answer is B.
For the second question, the answer is A.
Asbestos fiber accumulate in the <em>lysosomes.
</em>
Option: (b)
<u>Explanation:
</u>
Asbestos is a natural group of minerals and it is composed of thin and needle-like fibers. An asbestos causes several diseases like cancers and so on, including asbestosis and mesothelioma.
Although asbestos extend and fireproofs materials, this materials are banned in ‘many countries’. But asbestos are not banned in the United States.
Lysosomes are important part of the ‘endomembrane system’ because lysosomes are formed from the ‘endoplasmic reticulum’ and these products are synthesized and processed by the ‘Golgi’.
