Answer:
Option-C
Explanation:
A pulse-chase experiment which is used to study the cellular process taking place in the cells. This uses the labelled molecule which is incorporated into the cellular pathway and then the unlabeled molecules are used over time to determine how much time is required by the unlabeled molecule to replace the labelled molecule.
In the given question, the pancreatic cell which secretes the digestive enzyme known as the acinar cell is labelled with the leucine and then used unlabeled leucine.
When observed after three hours, the black spots will appear on the exterior of the cell as the protein has been synthesised by the ER and now has been secreted from the cell.
Thus, Option-C is the correct answer.
<span>The scientist that did NOT contribute to the idea of natural selection is <span>none of the above. The answer is letter D. Both Charles Darwin and Alfred Russel Wallace contribute to the natural selection and are biologist. Darwin hypothesized his theory of evolution while Wallace supplied Darwin with birds for study only to found out that both have the same hypothesis regarding natural selection.
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Solving problems with science means that to solve the problem the scientific method is used. This method includes observing, research, hypothesis , test and conclusion with a help of lot high level theory.
Without science there is not strict process to follow in order to resolve the problem end get to a solution.
Answer:
Menstruation is one part of a person's menstrual cycle which includes the shedding of the endometrium (lining of the uterus) that occurs throughout a person's reproductive life.
Answer:
carbohydrate + oxygen = carbon dioxide + water + energy
