Biology Chapter 4

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Which function group behaves as a base?

Amino Group

Which molecules shown are ionized in a cell?

C2H3OH CNH5

Which molecule contains a carbonyl group?

C3H6O

Which molecule shown can increase the concentration of hydrogen ions in a solution and is therefore an organic acid?

C3H6O

Which molecules show an appropriate number of bonds around each carbon atom?

C3H703 N2C4H4O2 C3H8O

Which of the following is a hydrocarbon?

C3H8

What does a carbonyl group consist of?

CO (Double Bond)

What is in a carboxyl group?

CO2H

Which of the groups is an acidic functional group that can dissociate and release H+ into a solution?

CO2H

The element present in all organic molecules is....

Carbon

Citric acid makes lemons taste sour. Which of the following is a functional group that would cause a molecule such as citric acid to be acidic?

Carboxyl

Which functional group behaves as an acid?

Carboxyl Group

Organic Phosphate

Contributes negative charge. (PO4)

A carbon atom is most likely to form what kind of bond(s) with other atoms?

Covalent Bonds

Thiol

Forms disulfide bonds (SH)

Most organic compounds contain carbon and....

Hydrogen

Alcohol

Is polar and makes compounds more soluble in water. (OH)

The experimental approach taken in current biological investigations presumes that..

Living organisms can be understood in terms of the same physical and chemical laws that can be used to explain all natural phenomena.

Aldehyde

May be a structural isomer of a ketone (CO)

What is in an amino group?

NH2

What is in a hydroxyl group?

OH

Which functional group has characteristics of alcohol?

OH (Hydroxyl)

What is an a phosphate group?

PO4

Which functional group plays a major role in energy transfer?

Phosphate Group

How many electrons does one atom of carbon share to complete its valence shell?

4

Amine

Acts as a base (NH2)

Carboxylic Acid

Acts as an acid (CO2H)

A compound contains hydroxyl groups as its predominant functional group. Therefore, this compound...

Should form hydrogen bonds with water.

Which functional group has characteristics of thiols?

Sulfhydryl Group

The complexity and variety of organic molecules is due to...

The chemical versatility of carbon atoms.

Why are hydrocarbons insoluble in water?

The majority of their bonds are non-polar covalent carbon-to-hydrogen linkages.


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