Biology Chapter 4
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.
