Study Guide Ch. 2 Chemistry of Life (Anatomy)

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

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NGSS.HS-PS1-8

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

What is the charge of an electron?

• Positive

• Negative

• Neutral

What is the charge of an proton?

• Positive

• Negative

• Neutral

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NGSS.HS-PS2-4

What is the charge of an neutron?

• Positive

• Negative

• Neutral

Which of the following elements are the basis of organic, living organisms?

• Iron

• Nitrogen

• Carbon

• Hydrogen

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NGSS.HS-LS1-6

Which of the following statements best describes a covalent bond?

• A bond where nitrogen is bonded to everything.

• A bond where electrons are shared.

• A bond where electrons are donated from one atom to another.

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NGSS.HS-PS1-1

Nucleic acids are one of the four major macromolecules.  The main functions of nucleic acids are to

• store and transport energy and structural components in the cell.
• act as enzymes, cell signals, and structural support for the cell.
• carry genetic material and create structures inside the cell.
• aid in development, the immune system, and blood clotting.

Protein molecules are composed of long chains of __________ .

• ribosomes
• RNA
• amino acids
• DNA

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NGSS.HS-LS1-6

Life on Earth is based on the element:

• helium
• gold
• carbon
• water

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NGSS.HS-LS1-6