AP Biology Unit 1 MC

Which of the following groups characterizes the structure of an amino acid?

1. Amino acid 2. Carboxyl group

Protein

1. Carrier molecule in the plasma membrane 2. ATP Synthase (synthetase) in the inner mitochondrial and chloroplast membrane

In the figure below, ionic attractions would form between the R groups of which amino acids? (look at study guide image)

2 and 4

Which of the following is not a property of carbon?

Carbon-to-carbon bonds are limited to single bonds

Which monomer is incorrectly matched with the corresponding polymer?

Fatty acids are used to build nuclei acids

Which of the following is responsible for the cohesive property of water?

Hydrogen bonds between the oxygen atoms of one water molecule and a hydrogen atoms on another water molecule

Sucrose = Glucose + Fructose (look at study guide image, #3)

Hydrolysis

Analysis of a certain complex compound shows that it contains phosphate groups, ribose groups, and pyrimidines

It is most likely ribonucleic acid

Chloersterol

Steroid affecting the fluidity of the plasma membrane (only in animals)

Which of the following is an example of a hydrogen bond?

The attraction between a hydrogen of one water molecule and the oxygen of another water molecule.

Air that is dry changes temperature quickly, while air that is moist retains its temperature. What property allows for this regulation of temperature

The high specific heat of water, which results from polarity and hydrogen bonding.

Phospholipids

The major component of the fluid bilayer of a plasma membrane

If the differently shaped portions of this molecule represent different polypeptide chains, then this figure is representative of: (look at image on #12)

The quaternary structure of a protein

Triglyceride

a lipid made of three fatty acid molecules and one glycerol molecule

Carbohydrate molecules:

are a source of energy

A feature of organic compounds NOT found in inorganic compounds is the presence of

carbon atoms covalently bonded to each other

The carbon that makes up organic molecules in plants is derived directly from

carbon fixed in photosynthesis

A stalk of celery is placed in a solution of blue colored eye. After one hour, the leaves have blue fluid in their veins. Which property of water is being demonstrated?

evaporation and cooling

In which of the following reactions must be the equivalent of water molecule be added in order to break a bond?

glycogen to glucose

Which characteristic of water molecules directly contributes to the remarkable "water walking" success of the aquatic insects picture in the accompanying figure? (look at image on #15)

hydrogen bonds

Which of the following is responsible for the alpha-helical structure of proteins

hydrogen bonds

Question #28

look at study guide

The products of the process in the same figure as #3

monosaccharides

All of the following types of chemical bonds are responsible for maintaining the tertiary structure of this polypeptide except:

peptide bonds

At which level of protein structure as peptide bonds most important

primary

A molecule of a saturated triacylglycerol

the maximum number of hydrogen atoms in the fatty acids

Which of the following illustrates hydrolysis

the reaction of a faar to form glycerol and fatty acids