nucleus
The nuclear envelope is a double membrane containing pores. This topic is part of Biology within Science & Nature. This page currently draws on 41 supporting questions, with answers and bonus facts available below.
nucleus trivia questions
What structure surrounds the cell nucleus?
Answer: Nuclear envelope
Bonus fact: The nuclear envelope is a double membrane containing pores.
What dense region inside the nucleus produces ribosomal RNA and assembles ribosome subunits?
Answer: Nucleolus
Bonus fact: The nucleolus is the center of ribosome subunit production.
Which type of decay emits a helium nucleus?
Answer: Alpha decay
Bonus fact: An alpha particle contains two protons and two neutrons.
Nuclear fission splits a heavy atomic nucleus into what?
Answer: Smaller nuclei
Bonus fact: Fission also releases neutrons and energy.
The nucleus is located where in an atom?
Answer: Center
Bonus fact: It contains nearly all of an atom's mass.
What force holds protons and neutrons together in the nucleus?
Answer: Strong nuclear force
Bonus fact: The strong force overcomes proton-proton electrical repulsion at short range.
Which shell is closest to the nucleus?
Answer: First shell
Bonus fact: Lower-energy shells lie closer to the nucleus.
In eukaryotic cells, is the nucleus considered part of the cytoplasm?
Answer: No
Bonus fact: Cytoplasm generally excludes the nucleus.
The nucleus of a eukaryotic cell contains most of its what?
Answer: DNA
Bonus fact: Chromosomes are housed inside the nucleus.
What membrane surrounds the nucleus?
Answer: Nuclear envelope
Bonus fact: The double membrane contains nuclear pores.
What structure inside the nucleus helps assemble ribosomal components?
Answer: Nucleolus
Bonus fact: The nucleolus produces rRNA and assembles ribosomal subunits.
Nuclear fusion occurs when what combines to form a new nucleus?
Answer: Two atomic nuclei
Bonus fact: Fusion powers the Sun and other stars.