Textbook Question
In certain types of radioactive decay, the isotope releases a particle called an alpha particle, which contains two protons and two neutrons. When this happens, is the product still the same element? Why or why not?
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2. Cell Chemistry & Cell Components
Isotopes
Multiple Choice
Which of the following statements about the nucleus is NOT true?
A
The nucleus is responsible for protein synthesis.
B
The nucleus is surrounded by a double membrane called the nuclear envelope.
C
The nucleus contains nucleoli, which are involved in ribosome production.
D
The nucleus contains the cell's genetic material.
Verified step by step guidance1
Begin by identifying the primary functions of the nucleus in a cell. The nucleus is known as the control center of the cell, primarily responsible for storing the cell's genetic material in the form of DNA.
Understand the structure of the nucleus. It is surrounded by a double membrane known as the nuclear envelope, which protects the genetic material and regulates the exchange of materials between the nucleus and the cytoplasm.
Recognize the role of nucleoli within the nucleus. Nucleoli are structures found inside the nucleus that are primarily involved in the production of ribosomes, which are essential for protein synthesis.
Clarify the process of protein synthesis. While the nucleus contains the genetic instructions for protein synthesis, the actual process of synthesizing proteins occurs in the cytoplasm, primarily at the ribosomes.
Evaluate the statements given in the problem. The statement 'The nucleus is responsible for protein synthesis' is incorrect because the nucleus provides the genetic blueprint, but the synthesis occurs outside the nucleus at the ribosomes.
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