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Human Biology: The Chemistry of the Cell

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Human Biology: The Chemistry of the Cell

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Questions and Answers

Why do cells use protein catalysts called enzymes to break covalent bonds?

To convert covalent bonds into ionic bonds

To increase the temperature needed to break covalent bonds

To decrease the temperature needed to break covalent bonds (correct)

To prevent the formation of covalent bonds

What is a characteristic of non-polar covalent bonds?

They involve atoms with different attraction to acquired electrons

They only form in very high temperatures

They form when shared atoms have similar attraction to acquired electrons (correct)

They are weaker than ionic bonds

What type of bond forms when two atoms share electrons to fill their outermost energy level?

Ionic bond

Van der Waals bond

Covalent bond (correct)

Hydrogen bond

Why can some atoms, such as carbon, form long chains of atoms to create complex molecules?

As a result of their ability to form multiple covalent bonds simultaneously Signup and view all the answers

How do the hydrogen atoms in a water molecule contribute to its polarity?

They create a positive pole near them and a negative pole on the opposite side Signup and view all the answers

What is the defining characteristic of a polar molecule?

It has a positive charge at one end and a negative charge at the other Signup and view all the answers

What type of bond forms when one of the poles of a water molecule is attracted to an opposite pole on another molecule?

Hydrogen bond Signup and view all the answers

Why is hydrogen bonding considered important in biological molecules like DNA and proteins?

It is strong enough to keep the structure together and weak enough for accessing genetic data Signup and view all the answers

What are the three subatomic particles that make up an atom?

Protons, neutrons, and electrons Signup and view all the answers

What is the relation between the number of protons and the number of electrons in a stable atom?

The number of protons and electrons are always equal Signup and view all the answers

What distinguishes one element from another?

Atomic number Signup and view all the answers

Where are protons and neutrons located within an atom?

In the nucleus Signup and view all the answers

Human Biology: The Chemistry of the Cell

Choose a study mode

Podcast

Questions and Answers

Why do cells use protein catalysts called enzymes to break covalent bonds?

What is a characteristic of non-polar covalent bonds?

What type of bond forms when two atoms share electrons to fill their outermost energy level?

Why can some atoms, such as carbon, form long chains of atoms to create complex molecules?

How do the hydrogen atoms in a water molecule contribute to its polarity?

What is the defining characteristic of a polar molecule?

What type of bond forms when one of the poles of a water molecule is attracted to an opposite pole on another molecule?

Why is hydrogen bonding considered important in biological molecules like DNA and proteins?

What are the three subatomic particles that make up an atom?

What is the relation between the number of protons and the number of electrons in a stable atom?

What distinguishes one element from another?

Where are protons and neutrons located within an atom?

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Upgrade to continue

Human Biology: The Chemistry of the Cell

Choose a study mode

Podcast

Questions and Answers

Why do cells use protein catalysts called enzymes to break covalent bonds?

What is a characteristic of non-polar covalent bonds?

What type of bond forms when two atoms share electrons to fill their outermost energy level?

Why can some atoms, such as carbon, form long chains of atoms to create complex molecules?

How do the hydrogen atoms in a water molecule contribute to its polarity?

What is the defining characteristic of a polar molecule?

What type of bond forms when one of the poles of a water molecule is attracted to an opposite pole on another molecule?

Why is hydrogen bonding considered important in biological molecules like DNA and proteins?

What are the three subatomic particles that make up an atom?

What is the relation between the number of protons and the number of electrons in a stable atom?

What distinguishes one element from another?

Where are protons and neutrons located within an atom?

More Like This

Human Body Molecules Quiz

Lipids: Chemistry, Digestion &amp; Absorption

Biology Chapter 2: Cells and Chemistry

Roots in Chemistry and Physical Factors

Lipids: Chemistry, Digestion & Absorption