Which option describes a similarity and a difference between isotopes of an element?
Answer Expert Verified ‘which option describes a similarity between isotopes of an element. The correct option is C. Isotopes have the same number of atomic number but different mass number. The mass number is the summation of proton and neutron.
Where is the nucleus located in an atom?
An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.
What three types of particles make up an atom?
We now know that atoms are made up of three particles: protons, neutrons and electrons — which are composed of even smaller particles, such as quarks. Atoms were created after the Big Bang 13.7 billion years ago. As the hot, dense new universe cooled, conditions became suitable for quarks and electrons to form.
What is the process of the nucleus?
The nucleus contains most of the DNA in the cell. Transcription occurs within the nucleus. Through this process the information in the cell’s DNA is used as a template to create RNA. The RNA is then modified into one of three types: mRNA, tRNA, or rRNA.
What are the five functions of nucleus?
Functions
- control of the genetical information of the cell and thus the heredity characteristics of an organism,
- control of the protein and enzyme synthesis.
- control of cell division and cell growth.
- storage of DNA, RNA and ribosome.
- regulation of the transcription of the mRNA to protein.
- production of ribosomes.
What is the basic structure of the nucleus?
The structure of a nucleus encompasses the nuclear membrane, nucleoplasm, chromosomes, and nucleolus. The nuclear membrane is a double-layered structure that encloses the contents of the nucleus. The outer layer of the membrane is connected to the endoplasmic reticulum.