Multiple Choice
In the context of small molecules and atoms, which subatomic particle is positively charged and located in the nucleus of an atom?
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2. Chemical Components of Cells
Small Molecules
Multiple Choice
Which statement best describes the nucleus of an atom?
A
A membrane-bound compartment that stores energy-rich molecules for cellular metabolism
B
A dense central region containing protons and neutrons and accounting for most of the atom’s mass
C
A diffuse cloud of electrons that determines the atom’s mass and volume
D
A region composed primarily of protons and electrons held together by covalent bonds
Verified step by step guidance1
Step 1: Understand the context of the question, which is about the nucleus of an atom, a fundamental concept in cell biology and chemistry.
Step 2: Recall that the nucleus of an atom is the central part where most of the atom's mass is concentrated.
Step 3: Remember that the nucleus contains protons and neutrons, which are subatomic particles contributing to the atom's mass.
Step 4: Recognize that electrons form a cloud around the nucleus and do not contribute significantly to the atom's mass.
Step 5: Based on these points, identify the statement that correctly describes the nucleus as a dense central region containing protons and neutrons and accounting for most of the atom’s mass.
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