Chapter 2 Flashcards
Molecules of life
An individual molecule is always either hydrophobic or hydrophilic and can never possess at the same time a region that is hydrophobic and a region that is hydrophilic.
A: True
B: false
B: Flase
The basic subunits that make up complex carbohydrate like starch are called
A: monosaccharides
B: glycerol
C: nucleotides
D: amino acids
E: glycosidic bonds
A: monosaccharides
Match the following to their function
- Phospholipid
- Chitin
- Starch
- Cellulose
- Glycogen
A: Plant energy storage
B: Part of cell membrane
C: plant cell wall structural support
D: Animal energy storage
- phosoplipids
- Chitin
- Starch
- Cellulose
- Glucogen
Match the following structures
- The Three- dimensional conformation assumed by a polypeptide chain
- The association of two or more polypeptide to make a functional protein
- The structures held together by hydrogen bond at regular interval along the polypeptide backbone
- The unique sequence of amino acids.
A: Secondary structure
B: Quaternary structure
C: Primary structure
D: Tertiary structure
- D: Tertiary structure
- B: Quaternary structure
- A: Secondary structure
- C: Primary structure
Which of the following are monomers used to make macromolecules that are polymer?
A: Glucose, fatty acids
B: Amino acid, fatty acids
C: amino acids, glycerol
D: amino acids, glucose
D: amino acids, glucose
Which of these… (choose from the options below to answer the following questions)
A: Amino acid A and amino acid B
B: Just amino acid A
C: just amino acid C
D: Amino acid C and amino acid E
E: Amino acid B and amino acid D
- Is/are non-polar hydrophobic amino acids because of the circled functional group
- is/are polar hydrophilic amino acids because of the circled functional group
- is/are charged hydrophilic amino acids because of the circled functional group
- could form an ionic bond between them to stabilize the tertiary structure of protein
- B Just amino acid A
- E Amino acid B and amino acid D
- D Amino acid C and amino acid E
- D Amino acid C and amino acid E
Samples of three different triacylglycerol’s were tested to determine the melting point of each one. the results of the tests are shown in the graph. Which of the three fatty acids is likely to have the least unsaturated fatty acids?
A: Type 1
B: Type 2
C: Type 3
D: There is no way of knowing
B: Type 2
Carbon can form 4 ionic and 4 covalent bonds
A: True
B: False
B: False
What unique property of carbon enables this element to be “life’s chemical backbone”?
A: Carbon is the most abundant element in the universe.
B: Carbon can form double or single bonds.
C: Carbon has four valence electrons.
D: Carbon can form double bonds.
E: Carbon has four electrons
C: Carbon has four valence electrons.
Recall that a carbon atom behaves as if it possesses four valence electrons. Given this information, what is the most likely structural formula for carbon dioxide (CO2)?
A: O=C–O
B: O=C=O
C: O–C–O
D: O–C=O
B: O=C=O
Three carbon atoms are linked by a pair of single covalent bonds in such a way that they form the shape of a V. If the molecule is saturated with hydrogens, how many hydrogen atoms does this molecule contain?
A: 8
B: 6
C: 10
D: 2
E: 4
A: 8
How any hydrogen atoms are present in a five-carbon hydrocarbon molecule with four of the carbons linked in a chain by single covalent bonds and with the fifth carbon atom attached by a single bond as a branch to the second carbon in the chain?
A: 8
B: 10
C: 6
D: 12
D: 12
The basic unit of matter is referred to as a(n):
A: Molecule
B: Ion
C: atom
D: proton
E: neutron
C: atom
Which contributes to the measurement referred to as mass number?
A: protons and neutrons
B: electrons and neutrons
C: protons and electrons
D: protons, electrons, and neutrons
E: neutrons only
A: protons and neutrons
An oxygen (O) atom has _____ protons, _____ neutrons, and _____ unfilled energy shell
A: 8;8;1
B: 8; 16; 2
C: 8; 8; 8
D: 8; 16; 1
E: 16; 8; 1
A: 8;8;1
